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| tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 1 post office box 655303 ? dallas, texas 75265 fast transient response using small output capacitor (10 m f) 200-ma low-dropout voltage regulator available in 1.5-v, 1.8-v, 2.5-v, 3-v and 3.3-v dropout voltage down to 170 mv at 200 ma (tps7433) 3% tolerance over specified conditions 8-pin soic package thermal shutdown protection description this device is designed to have a fast transient response and be stable with 1- m f capacitors. this combination provides high performance at a reasonable cost. because the pmos device behaves as a low-value resistor, the dropout voltage is very low (typically 170 mv at an output current of 200-ma for the tps7433). this ldo family also features a sleep mode; applying a ttl high signal to en (enable) shuts down the regulator, reducing the quiescent current to less than 1 m a at t j = 25 c. the tps74xx is offered in 1.5-v, 1.8-v, 2.5-v, 3-v, and 3.3-v. output voltage tolerance is specified as a maximum of 3% over line, load, and temperature ranges. the tps74xx family is available in 8 pin soic package. 50 200 50 0 100 0 t time m s c o = 10 m f tps7418 load transient response 0 300 200 100 400 500 700 600 800 900 1000 i output current ma o v o change in d output voltage mv di/dt = t j junction temperature c 100 0 150 50 50 300 200 250 dropout voltage mv v do tps7433 dropout voltage vs junction temperature 25 25 0 50 75 100 125 150 i o = 50 ma i o = 1 ma i o = 75 ma i o = 200 ma v i = 3.2 v 200 ma 25 m s please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. production data information is current as of publication date. products conform to specifications per the terms of texas instruments standard warranty. production processing does not necessarily include testing of all parameters. copyright ? 1999, texas instruments incorporated 1 2 3 4 8 7 6 5 en nc nc in sense out gnd in d package (top view) nc no internal connection
tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 2 post office box 655303 ? dallas, texas 75265 available options t j output voltage (v) packaged devices t j typ soic (d) 3.3 tps7433d 3 tps7430d 40 c to 125 c 2.5 tps7425d 1.8 tps7418d 1.5 tps7415d the d package is available taped and reeled. add an r suffix to the device type (e.g., tps7433dr). 2 see application information section for capacitor selection details. out 4 1 in en gnd 6 8 7 v i 1 m f esr v o 1 m f + tps74xx c o 2 in 5 sense sense figure 1. typical application configuration functional block diagram _ + v ref out en gnd r1 r2 in sense tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 3 post office box 655303 ? dallas, texas 75265 terminal functions terminal i/o description name no. i/o description en 1 i enable input gnd 6 regulator ground in 4, 5 i input voltage nc 2, 3 not connected out 7 o regulated output voltage sense 8 i sense absolute maximum ratings over operating free-air temperature range (unless otherwise noted) input voltage range 3 , v i 0.3 v to 8 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . voltage range at en 0.3 v to v i + 0.3 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . peak output current internally limited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . continuous total power dissipation see dissipation rating tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . operating virtual junction temperature range, t j 40 c to 125 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg 65 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 stresses beyond those listed under aabsolute maximum ratingso may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated under arecommended operating conditi onso is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 3 all voltage values are with respect to network terminal ground. dissipation rating table 1 free-air temperatures package air flow (cfm) t a < 25 c power rating derating factor above t a = 25 c t a = 70 c power rating t a = 85 c power rating d 0 568 mw 5.68 mw/ c 312 mw 227 mw d 250 904 mw 9.04 mw/ c 497 mw 361 mw recommended operating conditions min max unit input voltage, v i 2.5 7 v output current, i o (see note 1) 0 200 ma operating virtual junction temperature, t j (see note 1) 40 125 c to calculate the minimum input voltage for your maximum output current, use the following equation: v i(min) = v o(max) + v do(max load) . note 1: continuous current and operating junction temperature are limited by internal protection circuitry, but it is not recomm ended that the device operate under conditions beyond those specified in this table for extended periods of time. tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 4 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating free-air temperature range, v i = v o(typ) + 1 v, i o = 1 ma, en = 0 v, c o = 1 m f (unless otherwise noted) parameter test conditions test conditions min typ max unit tps7415 25v tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 6 post office box 655303 ? dallas, texas 75265 typical characteristics figure 4 i o output current ma tps7425 output voltage vs output current 2.49 50 100 2.5 2.496 150 250 0 200 output voltage v v o v i = 3.5 v t a = 25 c 2.498 2.494 2.492 figure 5 t j junction temperature c tps7418 output voltage vs junction temperature 1.806 1.802 1.816 1.812 1.820 output voltage v v o 1.818 1.814 1.810 1.808 1.804 50 25 25 0 50 75 100 125 150 i o = 50 ma i o = 100 ma i o = 1 ma v i = 4.0 v i o = 200 ma figure 6 t j junction temperature c tps7433 output voltage vs junction temperature 3.285 3.330 3.305 3.315 output voltage v v o 3.325 3.320 3.310 3.300 3.295 3.290 50 25 25 0 50 75 100 125 150 v i = 4.3 v i o = 1 ma i o = 50 ma i o = 100 ma i o = 200 ma figure 7 t j junction temperature c 100 1 0 150 10000 50 50 1000 v i = 2.8 v 100 i o = 1 ma tps7418 ground current vs junction temperature ground current a m i o = 200 ma i o = 100 ma 10 tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 7 post office box 655303 ? dallas, texas 75265 typical characteristics figure 8 t j junction temperature c 0 150 50 50 v i =4.3 v 100 i o = 1 ma tps7433 ground current vs junction temperature ground current a m 100 1 10000 1000 i o = 200 ma 10 i o = 100 ma figure 9 f frequency hz 1k 10k 100k 250 output spectral noise density i o = 1 ma output spectral noise density vs frequency 2nv hz 20 nv hz 200 nv hz 2 m vhz 20 m vhz i o = 200 ma v i = 4.3 v c l = 1 m f t a = 25 c figure 10 0.1 0.1 1 1000 10 0.01 10 1 f frequency khz 100 output impedance z o w output impedance vs frequency v i = 4.3 v c l = 1 m f t a = 25 c c l = 1 m f: i o = 1 ma c l = 1 m f i o = 200 ma 100 0.01 figure 11 t j junction temperature c 100 0 10 150 50 110 40 60 200 250 v i = 2.9 v dropout voltage mv v do tps7430 dropout voltage vs junction temperature 200 ma 100 ma 10 ma tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 8 post office box 655303 ? dallas, texas 75265 typical characteristics f frequency hz 100 1k 10k 10 ripple rejection db ripple rejection vs frequency 0 20 40 60 80 50 70 30 10 100k 1m 10m c l = 1 m f i o = 100 ma c l = 1 m f i o = 1 ma c l = 1 m f i o = 200 ma figure 12 figure 13 v o change in 200 3.8 300 2.8 200 0 tps7418 line transient response v i t time ms 0 0.3 0.2 0.1 0.4 0.5 0.7 0.6 0.8 0.9 1 c o = 1 m f input voltage v d output voltage mv figure 14 50 200 50 0 100 0 t time ms c o = 10 m f tps7418 load transient response 0 0.3 0.2 0.1 0.4 0.5 0.7 0.6 0.8 0.9 1 i output current ma o v o change in d output voltage mv 200 ma 25 m s di/dt = tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 9 post office box 655303 ? dallas, texas 75265 typical characteristics figure 15 200 5.3 4.3 200 0 tps7433 line transient response t time ms 0 0.3 0.2 0.1 0.4 0.5 0.7 0.6 0.8 0.9 1 c o = 1 m f v o change in v i input voltage v d output voltage mv figure 16 50 200 50 0 100 0 0 c o = 10 m f tps7433 load transient response i output current ma o v o change in d output voltage mv 50 200 ma 25 m s di/dt = t time ms 0 0.3 0.2 0.1 0.4 0.5 0.7 0.6 0.8 0.9 1 t time ms tps7433 output voltage vs time (at startup) 4 2 0.6 0.4 0.2 0.8 1 1.4 1.2 1.6 1.8 2 0 v o output voltage v 5 0 enable pulse v 0 v i = 7 v figure 17 tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 10 post office box 655303 ? dallas, texas 75265 typical characteristics in en out + gnd c o esr r l v i to load figure 18. test circuit for typical regions of stability (figure 19) 0.1 0.01 0 50 100 150 200 typical regions of stability equivalent series resistance (esr) 2 vs output current 10 100 i o output current ma esr equivalent series resistance w 1 region of instability figure 19 2 esr refers to the total series resistance, including the esr of the capacitor, any series resistance added externally, and pwb trace resistance to c o . tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 11 post office box 655303 ? dallas, texas 75265 application information the tps74xx family includes five voltage regulators (1.5 v, 1.8 v, 2.5 v, 3 v, and 3.3 v). minimum load requirements the tps74xx family is stable even at zero load; no minimum load is required for operation. sense terminal connection the sense terminal must be connected to the regulator output for proper functioning of the regulator. normally, this connection should be as short as possible; however, the connection can be made near a critical circuit (remote sense) to improve performance at that point. internally, sense connects to a high-impedance wide-bandwidth amplifier through a resistor-divider network and noise pickup feeds through to the regulator output. routing the sense connection to minimize/avoid noise pickup is essential. adding an rc network between sense and out to filter noise is not recommended because it can cause the regulator to oscillate. external capacitor requirements an input capacitor is not usually required; however, a ceramic bypass capacitor (1 m f or larger) improves load transient response and noise rejection if the tps74xx is located more than a few inches from the power supply. a higher-capacitance electrolytic capacitor may be necessary if large (hundreds of milliamps) load transients with fast rise times are anticipated. like all low dropout regulators, the tps74xx requires an output capacitor connected between out and gnd to stabilize the internal control loop. the minimum recommended capacitance value is 1 m f and the esr (equivalent series resistance) must be at least 300 m w . solid tantalum electrolytic and aluminum electrolytic are all suitable, provided they meet the requirements described previously. out 4 1 in en gnd 6 8 7 v i 1 m f esr v o 1 m f + tps74xx c o in 5 sense sense figure 20. typical application circuit regulator protection the tps74xx pmos-pass transistor has a built-in back diode that conducts reverse currents when the input voltage drops below the output voltage (e.g., during power down). current is conducted from the output to the input and is not internally limited. when extended reverse voltage is anticipated, external limiting may be appropriate. tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 12 post office box 655303 ? dallas, texas 75265 application information regulator protection (continued) the tps74xx also features internal current limiting and thermal protection. during normal operation, the tps74xx limits output current to approximately 500 ma. when current limiting engages, the output voltage scales back linearly until the overcurrent condition ends. while current limiting is designed to prevent gross device failure, care should be taken not to exceed the power dissipation ratings of the package. if the temperature of the device exceeds 150 c(typ), thermal-protection circuitry shuts it down. once the device has cooled below 130 c (typ), regulator operation resumes. power dissipation and junction temperature specified regulator operation is assured to a junction temperature of 125 c; the maximum junction temperature should be restricted to 125 c under normal operating conditions. this restriction limits the power dissipation the regulator can handle in any given application. to ensure the junction temperature is within acceptable limits, calculate the maximum allowable dissipation, p d(max) , and the actual dissipation, p d , which must be less than or equal to p d(max) . the maximum-power-dissipation limit is determined using the following equation: p d(max) t j max t a r ja where t j max is the maximum allowable junction temperature. t a is the ambient temperature. r q ja is the thermal resistance junction-to-ambient for the package, i.e., 172 c/w for the 8-terminal soic. the regulator dissipation is calculated using: p d v i v o i o power dissipation resulting from quiescent current is negligible. excessive power dissipation will trigger the thermal protection circuit. tps7415, tps7418, tps7425, tps7430, tps7433 fast-transient-response using small output capacitor 200-ma low-dropout voltage regulators slvs212 december 1999 13 post office box 655303 ? dallas, texas 75265 mechanical data d (r-pdso-g**) plastic small-outline package 14 pin shown 4040047 / b 03/95 0.228 (5,80) 0.244 (6,20) 0.069 (1,75) max 0.010 (0,25) 0.004 (0,10) 1 14 0.014 (0,35) 0.020 (0,51) a 0.157 (4,00) 0.150 (3,81) 7 8 0.044 (1,12) 0.016 (0,40) seating plane 0.010 (0,25) pins ** 0.008 (0,20) nom a min a max dim gage plane 0.189 (4,80) (5,00) 0.197 8 (8,55) (8,75) 0.337 14 0.344 (9,80) 16 0.394 (10,00) 0.386 0.004 (0,10) m 0.010 (0,25) 0.050 (1,27) 0 8 notes: a. all linear dimensions are in inches (millimeters). b. this drawing is subject to change without notice. c. body dimensions do not include mold flash or protrusion, not to exceed 0.006 (0,15). d. four center pins are connected to die mount pad. e. falls within jedec ms-012 packaging information orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish msl peak temp (3) tps7415d active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7415dg4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7415dr active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7415drg4 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7418d active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7418dg4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7418drg4 active soic d 8 tbd call ti call ti tps7425d active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7425dg4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7425dr active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7425drg4 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7430d active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7430dg4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7430drg4 active soic d 8 tbd call ti call ti tps7433d active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7433dg4 active soic d 8 75 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7433dr active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim tps7433drg4 active soic d 8 2500 green (rohs & no sb/br) cu nipdau level-1-260c-unlim (1) the marketing status values are defined as follows: active: product device recommended for new designs. lifebuy: ti has announced that the device will be discontinued, and a lifetime-buy period is in effect. nrnd: not recommended for new designs. device is in production to support existing customers, but ti does not recommend using this part in a new design. preview: device has been announced but is not in production. samples may or may not be available. obsolete: ti has discontinued the production of the device. (2) eco plan - the planned eco-friendly classification: pb-free (rohs), pb-free (rohs exempt), or green (rohs & no sb/br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. tbd: the pb-free/green conversion plan has not been defined. pb-free (rohs): ti's terms "lead-free" or "pb-free" mean semiconductor products that are compatible with the current rohs requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. where designed to be soldered at high temperatures, ti pb-free products are suitable for use in specified lead-free processes. pb-free (rohs exempt): this component has a rohs exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. the component is otherwise considered pb-free (rohs compatible) as defined above. package option addendum www.ti.com 19-jun-2007 addendum-page 1 green (rohs & no sb/br): ti defines "green" to mean pb-free (rohs compatible), and free of bromine (br) and antimony (sb) based flame retardants (br or sb do not exceed 0.1% by weight in homogeneous material) (3) msl, peak temp. -- the moisture sensitivity level rating according to the jedec industry standard classifications, and peak solder temperature. important information and disclaimer: the information provided on this page represents ti's knowledge and belief as of the date that it is provided. ti bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. efforts are underway to better integrate information from third parties. ti has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ti and ti suppliers consider certain information to be proprietary, and thus cas numbers and other limited information may not be available for release. in no event shall ti's liability arising out of such information exceed the total purchase price of the ti part(s) at issue in this document sold by ti to customer on an annual basis. package option addendum www.ti.com 19-jun-2007 addendum-page 2 tape and reel information *all dimensions are nominal device package type package drawing pins spq reel diameter (mm) reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p1 (mm) w (mm) pin1 quadrant tps7415dr soic d 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 q1 tps7425dr soic d 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 q1 tps7433dr soic d 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 q1 package materials information www.ti.com 11-mar-2008 pack materials-page 1 *all dimensions are nominal device package type package drawing pins spq length (mm) width (mm) height (mm) tps7415dr soic d 8 2500 346.0 346.0 29.0 tps7425dr soic d 8 2500 346.0 346.0 29.0 tps7433dr soic d 8 2500 346.0 346.0 29.0 package materials information www.ti.com 11-mar-2008 pack materials-page 2 important notice texas instruments incorporated and its subsidiaries (ti) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. all products are sold subject to ti?s terms and conditions of sale supplied at the time of order acknowledgment. ti warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with ti?s standard warranty. testing and other quality control techniques are used to the extent ti deems necessary to support this warranty. except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. ti assumes no liability for applications assistance or customer product design. customers are responsible for their products and applications using ti components. to minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. ti does not warrant or represent that any license, either express or implied, is granted under any ti patent right, copyright, mask work right, or other ti intellectual property right relating to any combination, machine, or process in which ti products or services are used. information published by ti regarding third-party products or services does not constitute a license from ti to use such products or services or a warranty or endorsement thereof. use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from ti under the patents or other intellectual property of ti. reproduction of ti information in ti data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. reproduction of this information with alteration is an unfair and deceptive business practice. ti is not responsible or liable for such altered documentation. information of third parties may be subject to additional restrictions. resale of ti products or services with statements different from or beyond the parameters stated by ti for that product or service voids all express and any implied warranties for the associated ti product or service and is an unfair and deceptive business practice. ti is not responsible or liable for any such statements. ti products are not authorized for use in safety-critical applications (such as life support) where a failure of the ti product would reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing such use. buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of ti products in such safety-critical applications, notwithstanding any applications-related information or support that may be provided by ti. further, buyers must fully indemnify ti and its representatives against any damages arising out of the use of ti products in such safety-critical applications. ti products are neither designed nor intended for use in military/aerospace applications or environments unless the ti products are specifically designated by ti as military-grade or "enhanced plastic." only products designated by ti as military-grade meet military specifications. buyers acknowledge and agree that any such use of ti products which ti has not designated as military-grade is solely at the buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use. ti products are neither designed nor intended for use in automotive applications or environments unless the specific ti products are designated by ti as compliant with iso/ts 16949 requirements. buyers acknowledge and agree that, if they use any non-designated products in automotive applications, ti will not be responsible for any failure to meet such requirements. following are urls where you can obtain information on other texas instruments products and application solutions: products applications amplifiers amplifier.ti.com audio www.ti.com/audio data converters dataconverter.ti.com automotive www.ti.com/automotive dsp dsp.ti.com broadband www.ti.com/broadband clocks and timers www.ti.com/clocks digital control www.ti.com/digitalcontrol interface interface.ti.com medical www.ti.com/medical logic logic.ti.com military www.ti.com/military power mgmt power.ti.com optical networking www.ti.com/opticalnetwork microcontrollers microcontroller.ti.com security www.ti.com/security rfid www.ti-rfid.com telephony www.ti.com/telephony rf/if and zigbee? solutions www.ti.com/lprf video & imaging www.ti.com/video wireless www.ti.com/wireless mailing address: texas instruments, post office box 655303, dallas, texas 75265 copyright ? 2008, texas instruments incorporated |
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