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| ? 2009 microchip technology inc. ds22005b-page 1 mcp73833/4 features complete linear charge management controller - integrated pass transistor - integrated current sense - integrated reverse discharge protection constant current / constant voltage operation with thermal regulation high accuracy preset voltage regulation: - 4.2v, 4.35v, 4.4v, or 4.5v, + 0.75% programmable charge current: 1a maximum preconditioning of deeply depleted cells - selectable current ratio - selectable voltage threshold automatic end-of-charge control - selectable current threshold - selectable safety time period automatic recharge - selectable voltage threshold two charge status outputs cell temperature monitor low-dropout linear regulator mode automatic power-down when input power removed under voltage lockout numerous selectable options available for a variety of applications: - refer to section 1.0 electrical characteristics for selectable options - refer to the product id entification system for standard options available packages: - dfn-10 (3 mm x 3 mm) - msop-10 applications lithium-ion / lithium-polymer battery chargers personal data assistants cellular telephones digital cameras mp3 players bluetooth headsets usb chargers description the mcp73833/4 is a highly advanced linear charge management controller for use in space-limited, cost sensitive applications. the mcp73833/4 is available in a 10-lead, 3 mm x 3 mm dfn package or a 10-lead, msop package. along with its small physical size, the low number of external components required makes the mcp73833/4 ideally suited for portable applications. for applications charging from a usb port, the mcp73833/4 can adhere to all the specifications governing the usb power bus. the mcp73833/4 employs a constant current/constant voltage charge algorithm with selectable precondition- ing and charge termination. the constant voltage regulation is fixed with fo ur available options: 4.20v, 4.35v, 4.40v, or 4.50v, to accomodate new, emerging battery charging requirements. the constant current value is set with one external resistor. the mcp73833/ 4 limits the charge current based on die temperature during high power or high ambient conditions. this thermal regulation optimi zes the charge cycle time while maintaining device reliability. several options are available for the preconditioning threshold, preconditioning current value, charge termination value, and automatic recharge threshold. the preconditioning value and charge termination value are set as a ratio, or percentage, of the programmed constant current value. preconditioning can be set to 100% . refer to section 1.0 electrical characteristics for available options and the product indentification system for standard options. the mcp73833/4 is fully specified over the ambient temperature range of -40c to +85c. package types dfn-10msop-10 v dd stat1 stat2 v ss v bat therm pg (te ) prog 2 3 4 5 9 8 7 6 v dd v bat 11 0 stat1 v dd stat2 v bat therm 1 2 3 4 10 9 8 7 pg (te ) v bat v dd ep 11 5 6 prog v ss stand-alone linear li-ion / li-polymer charge management controller downloaded from: http:///
mcp73833/4 ds22005b-page 2 ? 2009 microchip technology inc. typical application functional block diagram stat1 v dd v ss prog v bat + - single li-ion cell 1,2 mcp73833 6 9,10 7 1f 1a li-ion battery charger 5 v in 470 470 470 stat2 pg therm t 4 38 1f 1k 10 k + - reference generator v ref (1.21v) v dd stat1 prog v bat g=0.001 v ss direction control 54 k 121 k uvlo + - precondition 6a + - terminatio n + - 111 k + - ca 10 k 157.3 k 6k 48 k 470.6 k charg e + - + - va 72.7 k 310 k 6a g=0.001 1k + - current limit 10 a + - ltvt + - htvt 470.6k 121 k therm 50 a charge control, timer, and status logic stat2 pg (te) + - ldo 1m 175 k shdn downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 3 mcp73833/4 1.0 electrical characteristics absolute maximum ratings v dd ........................................................................ 7.0v all inputs and outputs w.r.t. v ss .....-0.3 to (v dd +0.3)v maximum junction temperature, t j . internally limited storage temperature .......................... -65c to +150c esd protection on all pins: human body model (hbm) (1.5 k in series with 100 pf) ............................... 4kv machine model (mm) (200 pf, no series resistance) ........................... 300v *notice: stresses above those listed under maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at those or any ot her conditions above those indicated in the operational listings of this specification is not implied. exposure to maximum rating conditions for extended periods may affect device reliability. dc characteristics electrical specifications: unless otherwise specified, all limits apply for v dd = [v reg (typical)+0.3v] to 6v, t a =-40c to 85c. typical values are at +25c, v dd = [v reg (typical)+1.0v] parameters sym min typ max units conditions supply input supply voltage v dd 3.75 6 v charging v reg (typ- ical)+0.3v 6 v charge complete, standby supply current i ss 2000 3000 a charging 150 300 a charge complete 100 300 a standby (no battery or prog floating) 50 100 a shutdown (v dd < v bat , or v dd < v stop ) uvlo start threshold v start 3.4 3.55 3.7 v v dd low-to-high uvlo stop threshold v stop 3.3 3.45 3.6 v v dd high-to-low uvlo hysteresis v hys 100 mv voltage regulation (constant voltage mode, system test mode) regulated output voltage v reg 4.168 4.20 4.232 v v dd =[v reg (typical)+1v] 4.318 4.35 4.382 v i out =10 ma 4.367 4.40 4.433 v t a =-5c to +55c 4.467 4.50 4.533 v line regulation |( v bat /v bat ) / v dd | 0.10 0.30 %/v v dd =[v reg (typical)+1v] to 6v, i out =10 ma load regulation | v bat / v bat | 0.10 0.30 % i out =10 ma to 100 ma v dd =[v reg (typical)+1v] supply ripple attenuation psrr 58 db i out =10 ma, 10hz to 1 khz 4 7 d bi out =10 ma, 10hz to 10 khz 2 5 d bi out =10 ma, 10hz to 1 mhz current regulation (fast charge constant current mode) fast charge current regulation i reg 90 100 110 ma prog = 10 k 900 1000 1100 ma prog = 1.0 k t a =-5c to +55c maximum output current limit i max 1200 ma prog < 833 downloaded from: http:/// mcp73833/4 ds22005b-page 4 ? 2009 microchip technology inc. preconditioning current regulation (trickle charge constant current mode) precondition current ratio i preg / i reg 7.5 10 12.5 % prog = 1.0 k to 10 k 15 20 25 % t a =-5c to +55c 30 40 50 % 100 % precondition voltage threshold ratio v pth / v reg 64 66.5 70 % v bat low-to-high 69 71.5 75 % precondition hysteresis v phys 100 mv v bat high-to-low charge termination charge termination current ratio i term / i reg 3.75 5 6.25 % prog = 1.0 k to 10 k 5.6 7.5 9.4 % t a =-5c to +55c 7.5 10 12.5 % 15 20 25 % automatic recharge recharge voltage threshold ratio v rth / v reg 94.0 % v bat high-to-low 96.5 % pass transistor on-resistance on-resistance r dson 300 m v dd = 3.75v t j = 105c battery discharge current output reverse leakage current i discharge 0.15 2 a prog floating 0 . 2 5 2 av dd < v bat 0 . 1 5 2 av dd < v stop -5.5 -15 a charge complete status indicators - stat1, stat2, pg sink current i sink 1 52 5m a low output voltage v ol 0 . 4 1 vi sink = 4 ma input leakage current i lk 0.01 1 a high impedance, 6v on pin prog input charge impedance range r prog 12 0k standy impedance r prog 70 200 k minimum impedance for standby thermistor bias thermistor current source i therm 47 50 53 a 2 k < r therm < 50 k thermistor comparator upper trip threshold v t1 1.20 1.23 1.26 v v therm low-to-high upper trip point hysteresis v t1hys - 5 0 m v lower trip threshold v t2 0.235 0.25 0.265 v v therm high-to-low lower trip point hysteresis v t2hys 5 0m v system test (ldo) mode input high voltage level v ih (v dd -0.1) v therm input sink current i sink 3 6 20 a stand-by or system test mode bypass capacitance c bat 1 fi out < 250 ma 4.7 f i out > 250 ma dc characteristics (continued) electrical specifications: unless otherwise specified, all limits apply for v dd = [v reg (typical)+0.3v] to 6v, t a =-40c to 85c. typical values are at +25c, v dd = [v reg (typical)+1.0v] parameters sym min typ max units conditions downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 5 mcp73833/4 temperature specifications automatic power down automatic power down entry threshold v pd v bat + 50 mv v 2.3v < v bat < v reg v dd falling automatic power down exit thresh- old v pdexit v bat + 150 mv v 2.3v < v bat < v reg v dd rising timer enable input (te ) input high voltage level v ih 2.0 v input low voltage level v il 0 . 6 v input leakage current i lk 0 . 0 1 1 av te = 6v thermal shutdown die temperature t sd 150 c die temperature hysteresis t sdhys 1 0 c dc characteristics (continued) electrical specifications: unless otherwise specified, all limits apply for v dd = [v reg (typical)+0.3v] to 6v, t a =-40c to 85c. typical values are at +25c, v dd = [v reg (typical)+1.0v] parameters sym min typ max units conditions ac characteristics electrical specifications: unless otherwise specified, all limits apply for v dd = [v reg (typical)+0.3v] to 6v, t a =-40c to 85c. typical values are at +25c, v dd = [v reg (typical)+1.0v] parameters sym min typ max units conditions uvlo start delay t start 5 m sv dd low-to-high current regulation transition time out of preconditioning t delay 1 m sv bat mcp73833/4 ds22005b-page 6 ? 2009 microchip technology inc. notes: downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 7 mcp73833/4 2.0 typical performance curves note: unless otherwise indicated, v dd = 5.2v, v reg = 4.20v, i out = 10 ma and t a = +25c, constant-voltage mode. figure 2-1: battery regulation voltage (v bat ) vs. supply voltage (v dd ). figure 2-2: battery regulation voltage (v bat ) vs. ambient temperature (t a ). figure 2-3: output leakage current (i discharge ) vs. battery regulation voltage (v bat ). figure 2-4: charge current (i out ) vs. programming resistor (r prog ). figure 2-5: charge current (i out ) vs. supply voltage (v dd ). figure 2-6: charge current (i out ) vs. supply voltage (v dd ). note: the graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purpose s only. the performance characteristics listed herein are not tested or guaranteed. in so me graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power suppl y range) and therefore outs ide the warranted range. 4.170 4.175 4.180 4.185 4.190 4.195 4.200 4.205 4.210 4.50 4.75 5.00 5.25 5.50 5.75 6.00 supply voltage (v) battery regulation voltage (v) mcp73833 i out = 10 ma i out = 100 ma i out = 500 ma i out = 900 ma 4.160 4.170 4.180 4.190 4.200 4.210 4.220 -40-30 -20 -10 0 1020 30 40 50 60 70 80 ambient temperature (c) battery regulation voltage (v) mcp73833 i out = 10 ma i out = 100 ma i out = 500 ma i out = 900 ma 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 3.00 3.20 3.40 3.60 3.80 4.00 4.20 battery regulation voltage (v) output leakage current ( a) +85c -40c +25c 10 100 1000 1 3 5 7 9 11 13 15 17 19 21 programming resistor (k ) charge current (ma) 96 97 98 99 100 101 102 103 104 4.50 4.75 5.00 5.25 5.50 5.75 6.00 supply voltage (v) charge current (ma) r prog = 10 k 986 988 990 992 994 996 998 1000 1002 1004 4.50 4.75 5.00 5.25 5.50 5.75 6.00 supply voltage (v) charge current (ma) r prog = 1 k downloaded from: http:/// mcp73833/4 ds22005b-page 8 ? 2009 microchip technology inc. typical performance curves (continued) note: unless otherwise indicated, v dd = 5.2v, v reg = 4.20v, i out = 10 ma and t a = +25c, constant-voltage mode. figure 2-7: charge current (i out ) vs. junction temperature (t j ). figure 2-8: charge current (i out ) vs. junction temperature (t j ). figure 2-9: thermistor bias current (i threrm ) vs. supply voltage (v dd ). figure 2-10: thermistor bias current (i threrm ) vs. ambient temperature (t a ). figure 2-11: power supply ripple rejection (psrr). figure 2-12: power supply ripple rejection (psrr). 0 20 40 60 80 100 120 2535 45 55 65 75 85 95 105115 125 135 145 155 junction temperature (c) charge current (ma) r prog = 10 k 0 200 400 600 800 1000 1200 2535 45 55 65 75 85 95 105115 125 135 145 155 junction temperature (c) charge current (ma) r prog = 1 k 48.0 48.5 49.0 49.5 50.0 50.5 51.0 51.5 52.0 4.50 4.75 5.00 5.25 5.50 5.75 6.00 supply voltage (v) thermistor bias current ( a) 48.0 48.5 49.0 49.5 50.0 50.5 51.0 51.5 52.0 -40-30 -20 -10 0 1020 30 40 50 60 70 80 ambient temperature (c) thermistor bias current (a) -70 -60 -50 -40 -30 -20 -10 0 0.01 0.1 1 10 100 1000 frequency (khz) attenuation (db) v ac = 100 mvp-p i out = 10 ma c out = 4.7 f, x7r ceramic -60 -50 -40 -30 -20 -10 0 0.01 0.1 1 10 100 1000 frequency (khz) attenuation (db) v ac = 100 mvp-p i out = 100 ma c out = 4.7 f, x7r ceramic downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 9 mcp73833/4 typical performance curves (continued) note: unless otherwise indicated, v dd = 5.2v, v reg = 4.20v, i out = 10 ma and t a = +25c, constant-voltage mode. figure 2-13: line transient response. figure 2-14: line transient response. figure 2-15: load transient response. figure 2-16: load transient response. figure 2-17: complete charge cycle (180 ma li-ion battery). figure 2-18: charge cycle start - preconditioning (180 mah li-ion battery). -2 0 2 4 6 8 10 12 14 0 2040 60 80 100 120 140 160 180 200 time (s) source voltage (v) -0.30 -0.25 -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 output ripple (v) i out = 10 ma c out = 4.7 f, x7r ceramic -2 0 2 4 6 8 10 12 14 0 2040 60 80 100 120 140 160 180 200 time (s) source voltage (v) -0.30 -0.25 -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 output ripple (v) i out = 100 ma c out = 4.7 f, x7r ceramic -0.05 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0 2040 60 80 100 120 140 160 180 200 time (s) output current (a) -0.12 -0.10 -0.08 -0.06 -0.04 -0.02 0.00 0.02 0.04 output ripple (v) c out = 4.7 f, x7r ceramic -0.20 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 0 2040 60 80 100 120 140 160 180 200 time (s) output current (a) -0.30 -0.25 -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 output ripple (v) c out = 4.7 f, x7r ceramic 0.0 1.0 2.0 3.0 4.0 5.0 0 3060 90 120150 180 210 time (minutes) battery voltage (v) 0 40 80 120 160 200 charge current (a) mcp73833-fci/mfv dd = 5.2v r prog = 10.0 k 0.0 1.0 2.0 3.0 4.0 5.0 024681 0 time (minutes) battery voltage (v) 0 40 80 120 160 200 charge current (a) mcp73833-fci/mf v dd = 5.2v r prog = 10.0 k downloaded from: http:/// mcp73833/4 ds22005b-page 10 ? 2009 microchip technology inc. notes: downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 11 mcp73833/4 3.0 pin descriptions descriptions of the pins are listed in table 3-1 . table 3-1: pin function table 3.1 battery management input supply (v dd ) a supply voltage of [v reg (typical) + 0.3v] to 6v is recommended. bypass to v ss with a minimum of 1 f. 3.2 charge status outputs (stat1, stat2) stat1 and stat2 are open-drain logic outputs for con- nection to a led for charge status indication. alternatively, a pull-up resistor can be applied for interfacing to a host microcontroller. 3.3 battery management 0v reference (v ss ) connect to negative terminal of battery and input supply. 3.4 current regulation set (prog) preconditioning, fast charge, and termination currents are scaled by placing a resistor from prog to v ss . the charge management controller can be disabled by allowing the prog input to float. 3.5 power good indication (pg ) mcp73833 only the power good (pg ) option is a pseudo open-drain output. the pg output can sink current, but not source current. however, there is a diode path back to the input, and, as such, the pg output should only be pulled up to the input. the pg output is low whenever the input to the mcp73833 is above the uvlo threshold and greater than the battery voltage. 3.6 timer enable input (te ) mcp73834 only the timer enable (te ) input option is used to enable or disable the internal timer. a low signal on this pin enables the internal timer and a high signal disables the internal timer. the te input can be used to disable the timer when the charger is supplying current to charge the battery and power the system load. the te input is compatible with 1.8v logic. 3.7 thermistor input (therm) an internal 50 a current source provides the bias for most common 10 k negative-temperature coefficient thermistors (ntc). the mcp73833/4 compares the voltage at the therm pin to factory set thersholds of 1.20v and 0.25v, typically. 3.8 battery charge control output (v bat ) connect to positive termina l of battery. drain terminal of internal p-channel mosf et pass transistor. bypass to v ss with a minimum of 1 f to ensure loop stability when the battery is disconnected. 3.9 exposed thermal pad (ep) there is an internal electrical connection between the exposed thermal pad (ep) and the v ss pin; they must be connected to the same potential. pin no. symbol function dfn-10 msop-10 11 v dd battery management input supply 22 v dd battery management input supply 3 3 stat1 charge status output 4 4 stat2 charge status output 55 v ss battery management 0v reference 6 6 prog current regulation set and charge control enable 77 p g , te mcp73833: power good output, mcp73834 : timer enable input 8 8 therm thermistor input 99 v bat battery charge control output 10 10 v bat battery charge control output 11 ep exposed thermal pad (ep); must be connected to v ss . downloaded from: http:/// mcp73833/4 ds22005b-page 12 ? 2009 microchip technology inc. notes: downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 13 mcp73833/4 4.0 functional description the mcp73833/4 is a high ly advanced linear charge management controller. refe r to the functional block diagram and figure 4-1 that depicts the operational flow algorithm from charge initiation to completion and automatic recharge. figure 4-1: flow chart. v bat < v pth * continuously monitored timer expired shutdown mode * v dd < v uvlo v dd < v bat stat1 = hi-z stat2 = hi-z pg = hi-z standby mode * v bat (v reg + 100 mv) prog > 200 k stat1 = hi-z stat2 = hi-z pg = low system test (ldo) mode v therm > (v dd - 100 mv) prog > 20 k stat1 = low stat2 = low pg = low timer suspended temperature fault no charge current stat1 = hi-z stat2 = hi-z pg = low timer suspended timer fault no charge current stat1 = hi-z stat2 = hi-z pg = low timer suspended preconditioning mode charge current (i preg stat1 = low stat2 = hi-z pg = low timer reset fast charge mode charge current (i reg stat1 = low stat2 = hi-z pg = low timer enabled constant voltage mode charge voltage (v reg stat1 = low stat2 = hi-z pg = low charge complete mode no charge current stat1 = hi-z stat2 = low pg = low timer reset v bat > v pth v bat = v reg v bat < i term timer expired v bat > v pth v bat < v rth downloaded from: http:/// mcp73833/4 ds22005b-page 14 ? 2009 microchip technology inc. 4.1 under voltage lockout (uvlo) an internal under voltage lockout (uvlo) circuit monitors the input voltage and keeps the charger in shutdown mode until the input supply rises above the uvlo threshold. the uvlo circuitry has a built-in hysteresis of 100 mv. in the event a battery is present when the input power is applied, the input supply must rise +150 mv above the battery voltage before the mcp73833/4 becomes operational. the uvlo circuit places the device in shutdown mode if the input supply falls to within +50 mv of the battery voltage. the uvlo circuit is always active. at any time the input supply is below the uvlo threshold or within +50 mv of the voltage at the v bat pin, the mcp73833/4 is placed in a shutdown mode. during any uvlo condition, the battery reverse discharge current shall be less than 2 a. 4.2 charge qualification for a charge cycle to begin, all uvlo conditions must be met and a battery or output load must be present. a charge current programming resistor must be connected from prog to v ss . if the prog pin is open or floating, the mcp73833/4 is disabled and the battery reverse discharge current is less than 2 a. in this manner, the prog pin acts as a charge enable and can be used as a manual shutdown. if the input supply voltage is above the uvlo threshold, but below v reg (typical)+0.3v, the mcp73833/4 will pulse the stat1 and pg outputs as the device determines if a battery is present. 4.3 preconditioning if the voltage at the v bat pin is less than the preconditioning threshold, the mcp73833/4 enters a preconditioning or trickle charge mode. the preconditioning threshold is factory set. refer to section 1.0 electrical characteristics for preconditioning threshold options. in this mode, the mcp73833/4 supplies a percentage of the charge current (establ ished with the value of the resistor connected to the prog pin) to the battery. the percentage or ratio of the current is factory set. refer to section 1.0 electrical characteristics for preconditioning current options. when the voltage at the v bat pin rises above the pre- conditioning threshold, the mcp73833/4 enters the constant current or fast charge mode. 4.4 constant current - fast charge mode during the constant current mode, the programmed charge current is supplied to the battery or load. the charge current is established using a single resistor from prog to v ss . the program resistor and the charge current are calculated using equation 4-1 : equation 4-1: constant current mode is maintained until the voltage at the v bat pin reaches the regulation voltage, v reg . when constant current mode is invoked, the internal timer is reset. 4.4.1 timer expired during constant current - fast charge mode if the internal timer expires before the recharge voltage threshold is reached, a timer fault is indicated and the charge cycle terminates. the mcp73833/4 remains in this condition until the battery is removed, the input power is removed, or the prog pin is opened. if the battery is removed or the prog pin is opened, the mcp73833/4 enters the standby mode where it remains until a battery is reinserted or the prog pin is reconnected. if the input power is removed, the mcp73833/4 is in shutdown. when the input power is reapplied, a normal start-up sequence ensues. 4.5 constant voltage mode when the voltage at the v bat pin reaches the regulation voltage, v reg , constant voltage regulation begins. the regulation voltage is factory set to 4.20v, 4.35v, 4.40v, or 4.50v with a tolerance of 0.75%. 4.6 charge termination the charge cycle is termi nated when, during constant voltage mode, the average charge current diminishes below a percentage of the programmed charge current (established with the value of the resistor connected to the prog pin) or the internal timer has expired. a 1 ms filter time on the termination comparator ensures that transient load conditions do not result in premature charge cycle termination. the percentage or ratio of the current is factory set. the timer period is factory set and can be disabled. refer to section 1.0 electrical characteristics for charge termination current ratio and timer period options. the charge current is latched off and the mcp73833/4 enters a charge complete mode. i reg 1000v r prog ---------------- - = where: r prog = kilo-ohms i reg = milliampere downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 15 mcp73833/4 4.7 automatic recharge the mcp73833/4 continuously monitors the voltage at the v bat pin in the charge complete mode. if the voltage drops below the recharge threshold, another charge cycle begins and current is once again supplied to the battery or load. the recharge threshold is factory set. refer to section 1.0 electri cal characteristics for recharge threshold options. 4.8 thermal regulation the mcp73833/4 limits the charge current based on the die temperature. the thermal regulation optimizes the charge cycle time wh ile maintaining device reliability. figure 4-2 depicts the thermal regulation for the mcp73833/4. figure 4-2: thermal regulation. 4.9 thermal shutdown the mcp73833/4 suspends charge if the die temperature exceeds +150c. charging will resume when the die temperature has cooled by approximately +10c. the thermal shutdown is a secondary safety feature in the event that there is a failure within the thermal regulation circuitry. 0 200 400 600 800 1000 1200 2535 45 55 65 75 85 95 105115 125 135 145 155 junction temperature (c) charge current (ma) r prog = 1 k downloaded from: http:/// mcp73833/4 ds22005b-page 16 ? 2009 microchip technology inc. notes: downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 17 mcp73833/4 5.0 detailed description 5.1 analog circuitry 5.1.1 battery management input supply (v dd ) the v dd input is the input su pply to the mcp73833/4. the mcp73833/4 automatically enters a power-down mode if the voltage on the v dd input falls below the uvlo voltage (v stop ). this feature prevents draining the battery pack when the v dd supply is not present. 5.1.2 current regulation set (prog) fast charge current regulation can be scaled by placing a programming resistor (r prog ) from the prog input to v ss . the program resistor and the charge current are calculated using the equation 5-1 : equation 5-1: the preconditioning trickle-charge current and the charge termination current are ratiometric to the fast charge current based on the selected device options. 5.1.3 battery charge control output (v bat ) the battery charge control ou tput is the drain terminal of an internal p-channel mosfet. the mcp73833/4 provides constant current and voltage regulation to the battery pack by controlling this mosfet in the linear region. the battery charge control output should be connected to the positive terminal of the battery pack. 5.1.4 temperature qualification (therm) the mcp73833/4 continuous ly monitors battery temperature during a charge cycle by measuring the voltage between the therm and v ss pins. an internal 50 a current source provides the bias for most common 10 k negative-temperature coefficient (ntc) or positive-temperature coefficient (ptc) thermistors.the current source is controlled, avoiding measurement sensitivity to fluctuations in the supply voltage (v dd ). the mcp73833/4 compares the voltage at the therm pin to factor y set thersholds of 1.20v and 0.25v, typically. once a volage outside the thresholds is detected during a charge cycle, the mcp73833/4 immediately su spends the charge cycle. the mcp73833/4 suspends charge by turning off the pass transistor and holding the timer value. the charge cycle resumes when the voltage at the therm pin returns to the normal range. if temperature monitoring is not required, place a standard 10 k resistor from therm to v ss . 5.1.4.1 system test (ldo) mode the mcp73833/4 can be plac ed in a system test mode. in this mode, the mcp73833/4 operates as a low dropout linear regulator (ldo ). the output voltage is regulated to the factory set voltage regulation option. the available output current is limitted to the programmed fast charge current. for stability, the v bat output must be bypassed to v ss with a minimum capacitance of 1 f for output currents up to 250 ma. a minimum capacitance of 4.7 f is required for output currents above 250 ma. the system test mode is entered by driving the therm input greater than (v dd -100 mv) with no battery connected to the output. in this mode, the mcp73833/ 4 can be used to power the system withou t a battery present. 5.2 digital circuitry 5.2.1 status indicators and power good (pg - option) the charge status outputs have two different states: low (l), and high impedance (hi-z). the charge status outputs can be used to illuminate leds. optionally, the charge status outputs can be used as an interface to a host microcontroller. table 5-1 summarize the state of the status outputs during a charge cycle. i reg 1000v r prog ---------------- - = where: r prog = kilo-ohms i reg = milliampere note 1: i therm is disabled during shutdown, stand-by, and system test modes. 2: a pull-down current source on the therm input is active only in stand-by and system test modes. 3: during system test mode, the prog input sets the available output current limit. 4: system test mode shall be exited by releasing the therm input or cycling input power. table 5-1: status outputs charge cycle state stat1 stat2 pg shutdown hi-z hi-z hi-z standby hi-z hi-z l charge in progress l hi-z l charge complete (eoc) hi-z l l temperature fault hi-z hi-z l timer fault hi-z hi-z l system test mode l l l downloaded from: http:/// mcp73833/4 ds22005b-page 18 ? 2009 microchip technology inc. 5.2.2 power good (pg ) option the power good (pg ) option is a pseudo open-drain output. the pg output can sink current, but not source current. however, there is a diode path back to the input, and as such, the pg output should only be pulled up to the input. the pg output is low whenever the input to the mcp73833 is above the uvlo threshold and greater than the battery voltage. if the supply voltage is above the uvlo, but below v reg (typical)+0.3v, the mcp73833 will pulse the pg output as the device determines if a battery is present. 5.2.3 timer enable (te ) option the timer enable (te ) input option is used to enable or disable the internal timer. a low signal on this pin enables the internal timer and a high signal disables the internal timer. the te input can be used to disable the timer when the charger is supplying current to charge the battery and power the system load. the te input is compatible with 1.8v logic. 5.2.4 device disable (prog) the current regulation set input pin (prog) can be used to terminate a charge at any time during the charge cycle, as well as to initiate a charge cycle or initiate a recharge cycle. placing a programming resist or from the prog input to v ss enables the device. allowing the prog input to float or by applying a logic-high input signal, disables the device and terminates a charge cycle. when disabled, the devices supply current is reduced to 100 a, typically. downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 19 mcp73833/4 6.0 applications the mcp73833/4 is designed to operate in conjunction with a host microcontroller or in stand-alone applications. the mcp73833/4 provides the preferred charge algorithm for lithium-ion and lithium-polymer cells constant-current followed by constant-voltage. figure 6-1 depicts a typical stand-alone application circuit, while figures 6-2 and 6-3 depict the accompanying charge profile. figure 6-1: typical application circuit. figure 6-2: typical charge profile with thermal regulation (1700 mah li-ion battery). figure 6-3: typical charge cycle start with thermal regulation (1700 mah li-ion battery). 6.1 application circuit design due to the low efficiency of linear charging, the most important factors are thermal design and cost, which are a direct function of the input voltage, output current and thermal impedance between the battery charger and the ambient cooling air. the worst-case scenario is when the device has transitioned from the preconditioning mode to the constant-current mode. in this situation, the battery charger has to dissipate the maximum power. a trade-off must be made between the charge current, cost and thermal requirements of the charger. 6.1.1 component selection selection of the external components in figure 6-1 is crucial to the integrity an d reliability of the charging system. the following discussi on is intended as a guide for the component selection process. 6.1.1.1 current programming resistor (r prog ) the preferred fast charge current for lithium-ion cells is at the 1c rate, with an absolute maximum current at the 2c rate. for example, a 500 mah battery pack has a preferred fast charge current of 500 ma. charging at this rate provides the shortest charge cycle times without degradation to t he battery pack performance or life. stat1 v dd v ss prog v bat + - single li-ion cell 1,2 mcp73833 6 9,10 7 li-ion battery charger 5 stat2 pg therm 4 38 c in regulated wall cube r prog r led c out led r led r led led led r t1 10 k t r t2 0.0 1.0 2.0 3.0 4.0 5.0 0 2040 60 80 100120 140 160 time (minutes) battery voltage (v) 0.00 0.40 0.80 1.20 1.60 2.00 charge current (a) mcp73833-fci/mfv dd = 5.2v r prog = 1.00 k 0.0 1.0 2.0 3.0 4.0 5.0 02 4 6 8 10 time (minutes) battery voltage (v) 0.00 0.40 0.80 1.20 1.60 2.00 charge current (a) mcp73833-fci/mf v dd = 5.2v r prog = 1.00 k downloaded from: http:/// mcp73833/4 ds22005b-page 20 ? 2009 microchip technology inc. 6.1.1.2 thermal considerations the worst-case power dissipation in the battery char- ger occurs when the input voltage is at the maximum and the device has transitioned from the preconditioning mode to the constant-current mode. in this case, the power dissipation is: power dissipation with a 5v, 10% input voltage source is: this power dissipation with the battery charger in the msop-10 package will cause thermal regulation to be entered as depicted in figure 6-3 . alternatively, the dfn-10 (3 mm x 3 mm) package could be utilized to reduce charge cycle times. 6.1.1.3 external capacitors the mcp73833/4 is stable with or without a battery load. in order to maintain good ac stability in the constant-voltage mode, a minimum capacitance of 4.7 f is recommended to bypass the v bat pin to v ss . this capacitance provides compensation when there is no battery load. in addition, the battery and interconnections appear inductive at high frequencies. these elements are in the control feedback loop during constant-voltage mode. therefore, the bypass capacitance may be necessary to compensate for the inductive nature of the battery pack. virtually any good quality outp ut filter capacitor can be used, independent of the capacitors minimum effective series resistance (esr) value. the actual value of the capacitor (and its associated esr) depends on the output load current. a 4.7 f ceramic, tantalum or aluminum electrolytic capacitor at the output is usually sufficient to ensure stability for output currents up to a 500 ma. 6.1.1.4 reverse-blocking protection the mcp73833/4 provides pr otection from a faulted or shorted input. without t he protection, a faulted or shorted input would discharge the battery pack through the body diode of the internal pass transistor. 6.1.1.5 charge inhibit the current regulation set input pin (prog) can be used to terminate a charge at any time during the charge cycle, as well as to initiate a charge cycle or initiate a recharge cycle. placing a programming resist or from the prog input to v ss enables the device. allowing the prog input to float or by applying a logic-high input signal, disables the device and terminates a charge cycle. when disabled, the devices supply current is reduced to 100 a, typically. 6.1.1.6 temperature monitoring the charge temperature window can be set by placing fixed value resistors in series-parallel with a thermistor. the resistance values of r t1 and r t2 can be calculated with the following equations in order to set the temperature window of interest. for ntc thermistors: for example, by utilizing a 10 k at 25c ntc thermistor with a se nsitivity index, , of 3892, the charge temperature range can be set to 0c - 50c by placing a 1.54 k resistor in series (r t1 ), and a 69.8 k resistor in parallel (r t2 ) with the thermistor as depicted in figure 6-1 . 6.1.1.7 charge status interface a status output provides information on the state of charge. the output can be used to illuminate external leds or interface to a host microcontroller. refer to table 5-1 for a summary of t he state of the status output during a charge cycle. powerdissipation v ddmax v pthmin C () i regmax = where: v ddmax = the maximum input voltage i regmax = the maximum fast charge current v pthmin = the minimum transition threshold voltage powerdissipation 5.5 v 2.7 v C () 550 ma 1.54 w == 24k r t1 r t2 r cold r t2 r cold + --------------------------------- + = 5k r t 1 r t 2 r hot r t 2 r hot + ----------------------------- + = where: r t1 = the fixed series resistance r t2 = the fixed parallel resistance r cold = the thermistor resistance at the lower temperature of interest r hot = the thermistor resistance at the upper temperature of interest downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 21 mcp73833/4 6.2 pcb layout issues for optimum voltage regulati on, place the battery pack as close as possible to the devices v bat and v ss pins, recommended to minimize voltage drops along the high current-carrying pcb traces. if the pcb layout is used as a heatsink, adding many vias in the heatsink pad can help conduct more heat to the backplane of the pcb, thus reducing the maximum junction temperature. figures 6-4 and 6-5 depict a typical layout with pcb heatsinking. figure 6-4: typical layout (top). figure 6-5: typical layout (bottom). mcp73833 v bat v dd v ss c in c out thermpg stat1 stat2 r prog v bat v ss v dd downloaded from: http:/// mcp73833/4 ds22005b-page 22 ? 2009 microchip technology inc. notes: downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 23 mcp73833/4 7.0 packaging information 7.1 package marking information 10-lead msop example: xxxxxx ywwnnn 833ami918256 legend: xx...x customer-specific information y year code (last digit of calendar year) yy year code (last 2 digits of calendar year) ww week code (week of january 1 is week 01) nnn alphanumeric traceability code pb-free jedec designator for matte tin (sn) * this package is pb-free. the pb-free jedec designator ( ) can be found on the outer packaging for this package. note : in the event the full microchip part nu mber cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. 3 e 3 e part number * marking code part number * marking code mcp73833-ami/mf aaaa mcp73833-bzi/mf aaab mcp73833-fci/mf aaac mcp73834-fci/mf baac mcp73833-gpi/mf aaad mcp73834-gpi/mf baad mcp73833-nvi/mf aaaf mcp73834-nvi/mf baaf mcp73833-6si/mf aaah mcp73834-6si/mf baah mcp73833-cni/mf aaak mcp73834-cni/mf baak * consult factory for alternative device options. part number * marking code part number * marking code mcp73833-ami/un 833ami mcp73833-bzi/un 833bzi mcp73833-fci/un 833fci mcp73834-fci/un 834fci mcp73833-gpi/un 833gpi mcp73834-gpi/un 834gpi mcp73833-nvi/un 833nvi mcp73834-nvi/un 834nvi mcp73833-cni/un 833cni mcp73834-cni/un 834cni * consult factory for alternative device options. 10-lead dfn (3x3) xxxxyyww nnn example: aaaa 0918 256 downloaded from: http:/// mcp73833/4 ds22005b-page 24 ? 2009 microchip technology inc. !" #$ % ! "#$ %! & '(!%&! %( %")% % % " * & & # "%( %" + * ) ! %" & "% ,- . /01 / & % # % ! ))% !%% ,21 $ & '! ! )% !%% '$ $ & % ! % 2 % & %! % * " ) ' % * $ % %" % %% 133)))& &3 * 4% 55, , & 5&% 6 67 8 6!&( $ 6 % ./0 7 9 % : % " $$ . 0 % % * + ,2 7 5% +/0 ,# " "5% +. : 7 ;"% , +/0 ,# " ";"% , .: . 0 % %;"% ( : . + 0 % %5% 5 + . 0 % %% ,# " " < = = d n note 1 1 2 e b e n l e2 note 1 1 2 d2 k exposed pad bottom view top view a3 a1 a note 2 ) 0>+/ downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 25 mcp73833/4 & ' ( ) * #'( $ % ! "#$ %! & '(!%&! %( %")% % % " & ", " %!"& "$ % ! "$ % ! %#" .&& " + & "% ,- . /01 / & % # % ! ))% !%% ,21 $ & '! ! )% !%% '$ $ & % ! % 2 % & %! % * " ) ' % * $ % %" % %% 133)))& &3 * 4% 55, , & 5&% 6 67 8 6!&( $ 6 % ./0 7 9 % = = "" * * . :. . % " $$ = . 7 ;"% , /0 "" * ;"% , +/0 7 5% +/0 2 %5% 5 > : 2 % % 5 .,2 2 % ? = :? 5 " * : = + 5 ";"% ( . = ++ d e e1 n note 1 1 2 b e a a1 a2 c l l1 ) 0 / downloaded from: http:/// mcp73833/4 ds22005b-page 26 ? 2009 microchip technology inc. notes: downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 27 mcp73833/4 appendix a: revision history revision b (may 2009) the following is the list of modifications: 1. added the mcp73833-6si/mf and mcp73834-6si/mf10-lead dfn packages. 2. updated dfn pinout. 3. updated package outline drawings. 4. updated appendix a revision history. revision a (september 2006) original release of this document. downloaded from: http:/// mcp73833/4 ds22005b-page 28 ? 2009 microchip technology inc. notes: downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 29 mcp73833/4 product identification system to order or obtain information, e.g., on pricing or de livery, refer to the factory or the listed sales office . device: mcp73833: 1a fully integrated charger, pg function on pin 7 mcp73833t: 1a fully integrated charger, pg function on pin 7 (tape and reel) mcp73834: 1a fully integrated charger, te function on pin 7 mcp73834t: 1a fully integrated charger, te function on pin 7 (tape and reel) output options * * * refer to table below for different operational options. * * consult factory for alternative device options. temperature: i = -40 c to +85 c package type: mf = plastic dual flat no lead (dfn) (3x3x0.9 mm body), 10-lead un = plastic micro small outline package (msop), 10-lead part no. xx output device options* x/ temp. xx package examples: * * a) mcp73833-ami/un: 10-lead msop pkg. b) mcp73833-bzi/un: 10-lead msop pkg. c) mcp73833-cni/mf: 10-lead dfn pkg. d) mcp73833-fci/un: 10-lead msop pkg. e) mcp73833-gpi/un: 10-lead msop pkg. f) mcp73833-nvi/mf: 10-lead dfn pkg. g) mcp73833-6si/mf: 10-lead dfn pkg. a) mcp73834-cni/mf: 10-lead dfn pkg. b) mcp73834-fci/un: 10-lead msop pkg. c) mcp73834-gpi/un: 10-lead msop pkg. d) mcp73834-nvi/mf: 10-lead dfn pkg. e) mcp73834-6si/mf: 10-lead dfn pkg. * * consult factory for alternative device options part number v reg i preg /i reg v pth /v reg i term /i reg v rth /v reg timer period mcp73833-ami/mf 4.20v 10% 71.5% 7.5% 96.5% 0 hours mcp73833-bzi/mf 4.20v 100% n/a 7.5% 96.5% 0 hours mcp73833-cni/mf 4.20v 10% 71.5% 20% 94% 4 hours mcp73833-fci/mf 4.20v 10% 71.5% 7.5% 96.5% 6 hours mcp73833-gpi/mf 4.20v 100% n/a 7.5% 96.5% 6 hours mcp73833-nvi/mf 4.35v 10% 71.5% 7.5% 96.5% 6 hours mcp73833-6si/mf 4.50v 10% 71.5% 7.5% 96.5% 6 hours mcp73833-ami/un 4.20v 10% 71.5% 7.5% 96.5% 0 hours mcp73833-fci/un 4.20v 10% 71.5% 7.5% 96.5% 6 hours mcp73834-bzi/mf 4.20v 100% n/a 7.5% 96.5% 0 hours mcp73834-cni/mf 4.20v 10% 71.5% 20% 94% 4 hours mcp73834-fci/mf 4.20v 10% 71.5% 7.5% 96.5% 6 hours mcp73834-nvi/mf 4.35v 10% 71.5% 7.5% 96.5% 6 hours mcp73834-6si/mf 4.50v 10% 71.5% 7.5% 96.5% 6 hours mcp73834-fci/un 4.20v 10% 71.5% 7.5% 96.5% 6 hours downloaded from: http:/// mcp73833/4 ds22005b-page 30 ? 2009 microchip technology inc. notes: downloaded from: http:/// ? 2009 microchip technology inc. ds22005b-page 31 information contained in this publication regarding device applications and the like is prov ided only for your convenience and may be superseded by updates. it is your responsibility to ensure that your application me ets with your specifications. microchip makes no representations or warranties of any kind whether express or implied, written or oral, statutory or otherwise, related to the information, including but not limited to its condition, quality, performance, merchantability or fitness for purpose . microchip disclaims all liability arising from this information and its use. use of microchip devices in life support and/or safe ty applications is entirely at the buyers risk, and the buyer agrees to defend, indemnify and hold harmless microchip from any and all damages, claims, suits, or expenses resulting fr om such use. no licenses are conveyed, implicitly or ot herwise, under any microchip intellectual property rights. trademarks the microchip name and logo, the microchip logo, accuron, dspic, k ee l oq , k ee l oq logo, mplab, pic, picmicro, picstart, rfpic, smartshunt and uni/o are registered trademarks of microchip te chnology incorporated in the u.s.a. and other countries. filterlab, hampshire, linear active thermistor, mxdev, mxlab, seeval, smartsensor and the embedded control solutions company are register ed trademarks of microchip technology incorporated in the u.s.a. analog-for-the-digital age, application maestro, codeguard, dspicdem, dspicdem.net, dspicworks, dsspeak, ecan, economonitor, fansense, in-circuit serial programming, icsp, icepic, mindi, miwi, mpasm, mplab certified logo, mplib, mplink, mtouch, nanowatt xlp, pickit, picdem, picdem.net, pictail, pic 32 logo, powercal, powerinfo, powermate, powertool, real ice, rflab, select mode, total endurance, tsharc, wiperlock and zena are trademarks of microchip te chnology incorporated in the u.s.a. and other countries. sqtp is a service mark of mi crochip technology incorporated in the u.s.a. all other trademarks mentioned herein are property of their respective companies. ? 2009, microchip technology incorporated, printed in the u.s.a., all rights reserved. printed on recycled paper. note the following details of the code protection feature on microchip devices: microchip products meet the specification cont ained in their particular microchip data sheet. microchip believes that its family of products is one of the mo st secure families of its kind on the market today, when used i n the intended manner and under normal conditions. there are dishonest and possibly illegal meth ods used to breach the code protection fe ature. all of these methods, to our knowledge, require using the microchip products in a manner outside the operating specif ications contained in microchips data sheets. most likely, the person doing so is engaged in theft of intellectual property. microchip is willing to work with the customer who is concerned about the integrity of their code. neither microchip nor any other semiconduc tor manufacturer can guarantee the security of their code. code protection does not mean that we are guaranteeing the product as unbreakable. code protection is constantly evolving. we at microchip are committed to continuously improving the code protection features of our products. attempts to break microchips c ode protection feature may be a violation of the digital millennium copyright act. if such acts allow unauthorized access to your softwa re or other copyrighted work, you may have a right to sue for relief under that act. microchip received iso/ts-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in chandler and tempe, arizona; gresham, oregon and design centers in california and india. the companys quality system processes and procedures are for its pic ? mcus and dspic ? dscs, k ee l oq ? code hopping devices, serial eeproms, microperi pherals, nonvolatile memory and analog products. in addition, microchips quality system for the design and manufacture of development systems is iso 9001:2000 certified. downloaded from: http:/// ds22005b-page 32 ? 2009 microchip technology inc. americas corporate office 2355 west chandler blvd. chandler, az 85224-6199 tel: 480-792-7200 fax: 480-792-7277 technical support: http://support.microchip.com web address: www.microchip.com atlanta duluth, ga tel: 678-957-9614 fax: 678-957-1455 boston westborough, ma tel: 774-760-0087 fax: 774-760-0088 chicago itasca, il tel: 630-285-0071 fax: 630-285-0075 cleveland independence, oh tel: 216-447-0464 fax: 216-447-0643 dallas addison, tx tel: 972-818-7423 fax: 972-818-2924 detroit farmington hills, mi tel: 248-538-2250 fax: 248-538-2260 kokomo kokomo, in tel: 765-864-8360 fax: 765-864-8387 los angeles mission viejo, ca tel: 949-462-9523 fax: 949-462-9608 santa clara santa clara, ca tel: 408-961-6444 fax: 408-961-6445 toronto mississauga, ontario, canada tel: 905-673-0699 fax: 905-673-6509 asia/pacific asia pacific office suites 3707-14, 37th floor tower 6, the gateway harbour city, kowloon hong kong tel: 852-2401-1200 fax: 852-2401-3431 australia - sydney tel: 61-2-9868-6733 fax: 61-2-9868-6755 china - beijing tel: 86-10-8528-2100 fax: 86-10-8528-2104 china - chengdu tel: 86-28-8665-5511 fax: 86-28-8665-7889 china - hong kong sar tel: 852-2401-1200 fax: 852-2401-3431 china - nanjing tel: 86-25-8473-2460 fax: 86-25-8473-2470 china - qingdao tel: 86-532-8502-7355 fax: 86-532-8502-7205 china - shanghai tel: 86-21-5407-5533 fax: 86-21-5407-5066 china - shenyang tel: 86-24-2334-2829 fax: 86-24-2334-2393 china - shenzhen tel: 86-755-8203-2660 fax: 86-755-8203-1760 china - wuhan tel: 86-27-5980-5300 fax: 86-27-5980-5118 china - xiamen tel: 86-592-2388138 fax: 86-592-2388130 china - xian tel: 86-29-8833-7252 fax: 86-29-8833-7256 china - zhuhai tel: 86-756-3210040 fax: 86-756-3210049 asia/pacific india - bangalore tel: 91-80-3090-4444 fax: 91-80-3090-4080 india - new delhi tel: 91-11-4160-8631 fax: 91-11-4160-8632 india - pune tel: 91-20-2566-1512 fax: 91-20-2566-1513 japan - yokohama tel: 81-45-471- 6166 fax: 81-45-471-6122 korea - daegu tel: 82-53-744-4301 fax: 82-53-744-4302 korea - seoul tel: 82-2-554-7200 fax: 82-2-558-5932 or 82-2-558-5934 malaysia - kuala lumpur tel: 60-3-6201-9857 fax: 60-3-6201-9859 malaysia - penang tel: 60-4-227-8870 fax: 60-4-227-4068 philippines - manila tel: 63-2-634-9065 fax: 63-2-634-9069 singapore tel: 65-6334-8870 fax: 65-6334-8850 taiwan - hsin chu tel: 886-3-6578-300 fax: 886-3-6578-370 taiwan - kaohsiung tel: 886-7-536-4818 fax: 886-7-536-4803 taiwan - taipei tel: 886-2-2500-6610 fax: 886-2-2508-0102 thailand - bangkok tel: 66-2-694-1351 fax: 66-2-694-1350 europe austria - wels tel: 43-7242-2244-39 fax: 43-7242-2244-393 denmark - copenhagen tel: 45-4450-2828 fax: 45-4485-2829 france - paris tel: 33-1-69-53-63-20 fax: 33-1-69-30-90-79 germany - munich tel: 49-89-627-144-0 fax: 49-89-627-144-44 italy - milan tel: 39-0331-742611 fax: 39-0331-466781 netherlands - drunen tel: 31-416-690399 fax: 31-416-690340 spain - madrid tel: 34-91-708-08-90 fax: 34-91-708-08-91 uk - wokingham tel: 44-118-921-5869 fax: 44-118-921-5820 w orldwide s ales and s ervice 03/26/09 downloaded from: http:/// |
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