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general description the MAX14871 dc motor driver provides a low-power and simple solution for driving and controlling brushed motors with voltages between 4.5v and 36v. very low driver on resistance reduces power during dissipation. the MAX14871 features a charge-pump-less design for reduced external components and low supply current. integrated current regulation allows user-defined peak startup motor currents and requires minimal external components. the MAX14871 includes 3 modes of current regulation: fast decay, slow decay, and 25% current ripple modes. current regulation based on 25% ripple simplifies the design and enables regulation independent of motor characteristics. a separate voltage sense input (sns) reduc - es current-sensing errors due to parasitic trace resistance. the MAX14871 features shoot-through protection and internal free-wheeling diodes that absorb inductive motor currents. driver outputs are short-circuit-protected from shorts to ground, to the supply, and between m1 and m2. an active-low fault output signals thermal overload and overcurrents during fault conditions. the MAX14871 is available in a 16-pin tssop-ep package and operates over the -40c to +85c temperature range. applications printers and scanners industrial automation vending and gaming machines benefts and features drive more power and reduce footprint ? up to 2.8a peak motor-current package ? flexible 4.5vC36v supply enables longer runtime low power consumption runs cooler and longer ? 334m? (typ) total bridge on-resistance ? 1ma (typ) supply current at 30khz/24v ? 10a (max) standby current at 12v simplified designs reduces time to market ? charge-pump-less architecture ? current regulation only requires a sense resistor ? current-sense input simplifes pcb layout ? internal/external v ref for current regulation ? fast/slow/25% ripple current regulation modes integrated protection provides robust driving solutions ? short-circuit-protected drivers ? thermal shutdown undervoltage lockout ? diagnostic fault output ? -40c to +85c temperature range ordering information appears at end of data sheet. 19-7063; rev 0; 9/14 driver v dd sns pwm dir max 14871 gnd com m 1 m 2 en fault driver v dd v dd current regulation r sense mode v ref tcoff c irq pwm gpo 24 v 3 . 3 v 3 . 3 v m 3 . 3 v c off typical application circuit evaluation kit available MAX14871 4.5v to 36v full-bridge dc motor driver
(all voltages referenced to gnd) v dd ........................................................................ -0.3v to +40v m1, m2 ....................................................... -0.3v to (v dd +0.3v) pwm, dir, fault , en , sns, vref, mode, tcoff ............................................................... -0.3v to +6.0v com ..................................................................... -0.3v to +0.3v current into m1, m2 ............................................................. 3a continuous power dissipation (t a = +70c) single-layer board (derate at 21.3mw/c above +70c) ............................................................ 1702mw multiple-layer board (derate at 26.1mw/c above +70c) ............................................................ 2088mw operating temperature range ........................... -40c to +85c junction temperature ...................................................... +150oc storage temperature range ............................. -65oc to +150 c lead temperature (soldering, 10s ) ................................ +300 c solder temperature (reflow ) ......................................... +260 c junction-to-case thermal resistance ( jc ) tssop-ep (single-layer board) .................................. 3c/w tssop-ep (multiple-layer board) ................................ 3c/w junction-to-ambient thermal resistance ( ja ) tssop-ep (single-layer board) ................................ 47c/w tssop-ep (multiple-layer board) ........................... 38.3c/w (note 1) (v dd = 4.5v to 36v, t a = t min to t max , unless otherwise noted. typical values are at v dd = 12v, t a = +25 c ) (note 3) note 2: package thermal resistances were obtained using the method described in jedec specification jesd51-7, using a four-layer board. for detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial . parameter symbol conditions min typ max units power supply supply voltage v dd 4.5 36 v supply current i dd en = low, m1/m2 not connected f pwm = 50khz 1 ma no switching 0.5 1.2 shutdown supply current i shdn en = high, driver is in shutdown v dd = 12v 3.7 10 a v dd = 36v 10 20 undervoltage lockout threshold v uvlo v dd rising 3.3 3.8 4.3 v undervoltage lockout threshold hysteresis v uvlo_hyst 400 mv driver (m1, m2) driver output resistance (high-side + low-side) r on i m_ = 2.8a t j = 25c 334 435 m t j = 125c 465 620 driver overload current limit i m_ol 3 a m1, m2 leakage current i m_lkg en = high, v m1 = v m2 = 0v or v dd -1 +1 a m1, m2 body diode forward- voltage v bf low-side diode, en = high, i f = 2.8a 1.5 v high-side diode, en = high, i f = 2.8a 1.5 maxim integrated 2 absolute maximum ratings stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to ab solute maximum rating conditions for extended periods may affect device reliability. package thermal characteristics electrical characteristics MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
(v dd = 4.5v to 36v, t a = t min to t max , unless otherwise noted. typical values are at v dd = 12v, t a = +25 c ) (note 3) parameter symbol conditions min typ max units current regulation (vref, sns, com, tcoff, mode) mode select threshold v mode_th fixed off-time, fast decay current regulation 0.2 v 25% ripple current regulation 0.5 1 fixed off-time, slow decay current regulation 1.5 mode internal pulldown resistance r mode_pd v mode = 5v 0.6 1 2.2 m vref internal/external select threshold v vref_th 0.2 0.4 v vref voltage range for exter - nal vref current regulation v vref v dd 5v 0.5 2 v v dd < 5v 0.5 1.3 vref input leakage i vref_lkg vref = 2v -1 +1 a sns threshold for internal v vref current regulation v sns_ivr_ thr v sns rising, v vref < v vref_th , all current regulation modes 94 100 110 mv v sns_ivr_thf v sns falling, 25% ripple mode, v vref < v vref_th -82 -75 -69 sns threshold for external v vref current regulation v sns_er_thr v sns rising, v vref > v vref_th , all current regulation modes v vref / a v v v sns_er_thf v sns falling, 25% ripple mode, v vref > v vref_th 0.75 x v vref /a v current-sense amplifer gain a v v vref = 1v (note 4) 9.6 10 10.5 v/v sns input leakage current i sns_lkg v sns = 250mv -1 +1 a com leakage current i com_lkg en = high, v com = 250mv -1 +1 a tcoff current i tcoff tcoff is connected to gnd 6 10 15 a tcoff threshold v tcoff 0.92 1 1.08 v logic signals (pwm, dir, en , fault ) input logic-high voltage v ih pwm, dir 2 v input logic-low voltage v il pwm, dir 0.8 v en input logic-high voltage v en _ih 1.6 v en input logic-low voltage v en _il 0.4 v input leakage current i il pwm, dir, en , v input = 5.5v or 0v -1 +1 a fault output low voltage v ol fault asserted, i sink = 5ma 0.5 v fault off leakage current i f_lkg fault deasserted, v fault = 5.5v -1 +1 a protection thermal-shutdown threshold t shdn temperature rising, fault asserted +160 c thermal-shutdown hysteresis t shdn_hyst 10 c maxim integrated 3 electrical characteristics (continued) MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
(v dd = 4.5v to 36v, t a = t min to t max , unless otherwise noted. typical values are at v dd = 12v, t a = +25 c ) (note 3) note 2: all units are production tested at t a = +25c. specifications over temperature are guaranteed by design. note 3: a v is the fixed voltage gain of the internal current sense amplifier. it is the factor by which the v sns voltage is multiplied for comparison with the external vref voltage when using external vref current regulation. see the applications information section for more information. parameter symbol conditions min typ max units pwm frequency f sw en = low, switching signal applied at pwm 50 khz dead time t dead 140 ns m1, m2 slew rate sr 200 v/s m1, m2 high-side propagation delay t pr r l = 1k, c l = 50pf, pwm/dir ris - ing, figure 1 620 ns m1, m2 low-side propagation delay t pf r l = 1k, c l = 50pf, pwm/dir fall - ing, figure 1 583 ns fixed off-time with internal vref current regulation t off_d pwm = high, en = low, v sns > v sns_ivr_thr , v vref < v vref_ th , tcoff unconnected 7.8 15 22 s current regulation minimum on-time t cr_bl pwm = high, en = low, v sns > v sns_ir_thr or v sns_er_thf 2.5 s overcurrent blanking time t oc_bl m1/m2 is shorted to v dd or gnd, figure 2 1 s overcurrent autoretry timeout t oc_to pwm = high, en = low, i m or i m2 > i m_ol , figure 2 2 ms enable turn-on delay t en_on pwm = high, r l = 1k, c l = 50pf, en falling, m1/m2 rising to 10%, figure 3 23 s enable turn-off delay t en_off pwm = high, r l = 1k, c l = 50pf, en rising, m1/m2 falling to 90%, figure 3 50 s maxim integrated 4 ac electrical characteristics MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
figure 1. m1/m2 propagation delays r l c l m1/ m2 t pr t pf 0v v l v dd 0v pwm/dir m1/m2 1v 1v maxim integrated 5 test circuits/timing diagrams MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
figure 2. overcurrent autoretry timeout figure 3. enable/disable delays fault t oc _ bl v l 0 v i m 1 or i m 2 t oc _ to i m _ ol 0 a r l c l m1/ m2 t en_on t en_off 0v v l v dd 0v en m1/m2 1.5v 1.5v 10% 90% maxim integrated 6 test circuits/timing diagrams (continued) MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
(v dd = 24v, t a = +25c, unless otherwise noted.) 0 2 4 6 8 10 12 -45 -30 -15 0 15 30 45 60 75 90 i shdn (a) temperature ( o c) shutdown supply current vs. temperature toc04 v dd = 4.5v v dd = 36v v dd = 24v 0 . 0 0 0 . 0 5 0 . 1 0 0 . 1 5 0 . 2 0 0 . 2 5 0 . 3 0 0 1 0 0 0 2 0 0 0 3 0 0 0 o n - r es i s t a nc e ( ?) l o a d curr e n t ( m a ) h ig h -s i d e o n r es i s t anc e vs . l o ad curr e n t t oc 01 v d d = 4 . 5 v v d d = 36 v 0 . 0 0 . 2 0 . 4 0 . 6 0 . 8 1 . 0 1 . 2 0 1 2 3 v b f ( v ) l o a d curr e n t ( a ) h ig h -s i d e m 1 / m 2 b o d y d io d e f o r w ard -v o lta g e vs . l o a d t oc 07 t a = 2 5 c t a = 8 5 c t a = - 4 0 c 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20 0 1000 2000 3000 on - resistance ( ? ) load current (ma) low - side on resistance vs. load current toc02 v dd = 4.5v v dd = 36v 0 5 10 15 20 25 30 35 40 45 50 55 100 150 200 250 300 350 400 450 500 t off (s) c off (pf) off- time vs c off capacitance toc08 0 . 0 0 0 . 0 5 0 . 1 0 0 . 1 5 0 . 2 0 0 . 2 5 0 . 3 0 0 . 3 5 0 . 4 0 - 4 5 - 2 0 5 3 0 5 5 8 0 1 0 5 1 3 0 o n - r es i s t a nc e ( ? ) te m pe r a t ur e ( o c ) o n- r es i s t anc e vs . t empe r a t ur e t oc 03 l o w -s i d e h igh -s i d e i l o a d = 1 a 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0 5 10 15 20 25 30 35 40 45 50 i cc (ma) data rate (khz) supply current vs. switching rate toc05 v dd = 5v v dd = 36v c l = 10pf on m1/m2 v dd = 24v v dd = 12v 0 . 0 0 . 2 0 . 4 0 . 6 0 . 8 1 . 0 1 . 2 0 1 2 3 v b f ( v ) l o a d curr e n t ( a ) l o w -s i d e m 1 / m 2 b o d y d io d e f o r w ard -v o lta g e vs . l o a d t oc 06 t a = 2 5 c t a = 8 5 c t a = - 4 0 c maxim integrated 7 typical operating characteristics MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
pin name function 1, 16 com com current output. connect a sense resistor, r sense , from com to gnd to use internal current regulation and/or external current control. connect both com pins together. 2, 3 m1 motor driver output 1. see the function tables for more information. connect both m1 pins together. 4, 13 v dd power supply input. bypass v dd to gnd with a 1f ceramic capacitor as close to the device as possible. connect both v dd pins together. 5 sns current sense input. connect sns to com to enable current regulation. to bypass current regulation, connect sns to gnd. 6 pwm pwm control logic input. pwm and dir control m1 and m2. see the function tables for more information. 7 dir direction control logic input. pwm and dir control m1 and m2. see the function tables for more information. 8 mode current regulation mode select input. connect mode to gnd for fast decay regulation. connect v mode > 1.5v for slow decay current regulation. connect 0.5v v mode 1v for fast decay with 25% ripple. mode has a 1m? internal pull-down resistor. 9 tcoff current regulation timing control. for external vref-based current regulation, connect a capacitor to tcoff to set the off-time (t off ). for internal vref-based current regulation leave tcoff uncon - nected when using internal v ref -based current regulation. see the current regulation section for more information. top view * ep = exposed pad . connect to ground plane . 16 15 14 13 12 11 9 1 2 3 4 5 6 8 com + m 2 m 2 vdd vdd m 1 m 1 com max 14871 vref en tcoff mode pwm 10 7 fault dir sns tssop - ep * ep maxim integrated 8 pin confguration pin description MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
pin name function 10 fault open-drain active-low fault output. fault goes low during an overcurrent condition and thermal shutdown. 11 en active-low enable input. drive en low to enable the driver outputs. drive en high to tri-state the driver outputs. ep gnd ground 14, 15 m2 motor driver output 2. see the function tables for more information. connect both m2 pins together. 12 v ref reference voltage input. the voltage applied to v vref sets the maximum motor current during external v vref -based current regulation. set v vref 0.1v current regulation based on 15s (typ) fxed off-time control with fast decay using internal v ref . 0 < 0.2v 0.5v < v mode < 1v > 0.1v current regulation based on 25% current ripple fast decay using internal v ref . 0 < 0.2v v mode > 1.5v > 0.1v current regulation based on 15s (typ) fxed off-time control with slow decay using internal v ref . 0 > 0.4v x < v vref /10 normal pwm operation. no current regulation. 0 > 0.4v v mode < 0.5v > v vref /10 current regulation based on fxed toff-time control with fast decay using external v ref . 0 > 0.4v 0.5v < v mode < 1v > v vref /10 current regulation based on 25% current ripple fast decay using external v ref . 0 > 0.4v v mode > 1.5v > v vref /10 current regulation based on fxed toff-time control with slow decay using external v ref . current regulation logic pwm/dir control logic maxim integrated 9 pin description (continued) function table x = dont care x = dont care MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
detailed description the MAX14871 dc brushed motor driver provides a low-power and flexible solution for driving and controlling brushed motors with voltages between 4.5v and 36v. peak motor currents of up to 2.8a ensure for large motor torque that is controllable by an external pwm signal and/ or by autonomous internal current regulation. charge-pump-less design ensures for minimal external components and low supply current. integrated current regulation allows limiting peak startup motor currents. shoot-through protection with a 140ns (typ) dead time ensures low operating current. internal free-wheeling diodes absorb inductive motor currents. the fault output signals thermal overload and overcurrents. overcurrent protection the MAX14871 is protected against shorts on m1/m2 to any voltages between v dd and gnd, including shorts to gnd, v dd and between m1 and m2 via overcurrent limiting. when a current above 6a (typ) flows through m1 or m2 for longer than 1s, an overcurrent condition is detected and the h-bridge drivers are automatically disabled and the fault output asserts. if the overcurrent condition continues for longer than the overcurrent autoretry timeout (2ms (typ)) the MAX14871 enters autoretry mode. in autoretry mode, the m1 and m2 outputs are re-enabled for 1s (typ) and fault goes high impedance. the drivers are disabled again and fault is re-asserted if the overcurrent condition persists. pwm control the pwm input is used for motor speed/torque control. increasing or decreasing the duty cycle at pwm sets the effective (average) voltage across the motor terminals and allows first-order speed control. when pwm is logic-high, the motor is driven in the direction defined by dir. when pwm is logic low, the bridge is in brake mode. in brake mode, the motor current continues flowing and recirculates through the low-side transistors of the h-bridge driver, due to its inductive impedance and back emf. driver vdd sns pwm dir MAX14871 gnd com m1 m2 en fault driver vdd vdd current regulation r sense mode vref tcoff maxim integrated 10 functional diagram MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
slope control the MAX14871 drivers turn-on and turn-off with active slope control during the m1/m2 transition times. this integrated slew rate limiting reduces emc, like conducted and radiated emi, associated with high di/dt and dv/dt rates. thermal shutdown the MAX14871 includes integrated protection against thermal overload. when the junction temperature exceeds 160c (typ), the h-bridge is tri-stated and fault asserted. m1 and m2 are automatically re-enabled when the junction temperature falls to 150c (typ). current sensing connect a sense resistor (r sense ) between com and gnd to monitor the motor current during operation. select r sense such that the voltage at com created by motor current flowing through the sense resistor is limited to with - in 250mv relative to gnd (-250mv v com +250mv). minimize series trace resistance from r sense to gnd to minimize voltage sense errors due to parasitic trace inter - connect resistance. use a star ground connection between the MAX14871 gnd pins and the gnd-side of r sense . connect the sns trace close to the r sense resistor in order to minimize current-sensing error introduced by ir voltage created by the trace resistance of the high-current com to r sense trace. if external current monitoring/ regulation is used, as shown in figure 5, connect the voltage sense inputs close to the r sense resistor. optionally use differential voltage sensing for higher accuracy sensing. connect the voltage sense close to the r sense resistor and/or use differential voltage-sensing. see figure 4 . current regulation the MAX14871 features internal current-regulation to limit the stall current. current regulation is based on the maxi - mum motor current (set with the r sense resistor) and the voltage at vref. when the motor current exceeds the value, the motor current is automatically reduced, either by driving both h-bridge outputs low (braking/slow decay), table 1. current regulation modes inputs current regulation mode mode vref regulation mode decay type vref tcoff 0.75v gnd 25% ripple fast internal (=1v) - 0.75v > 0.4v 25% ripple fast external - gnd gnd tcoff fast internal (=1v) 15s > 1.5v gnd tcoff slow internal (=1v) 15s gnd > 0.4v tcoff fast external to ff > 1.5v > 0.4v tcoff slow external to ff figure 4. star connection between com, sns, and gnd ep m1 m2 to sns com com r sense gnd gnd gnd gnd gnd gnd maxim integrated 11 MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
or by reversing the h-bridge direction (fast decay). the h-bridge is turned back to normal polarity after a defined delay time (toff mode) or after the motor current has reduced by 25% (25% ripple mode). see table 1 . the MAX14871 function tables show how to set the regula - tion mode. regulation modes the MAX14871 offers two internal current regulation modes: constant off-time (toff) and 25% current ripple regulation. for both modes, regulation is set when the motor current (i m ) exceeds the current limit defined by the vref voltage and the sense resistor: i m_max = v vref /(a v x r sense ) vref either the internal v vref voltage or an external voltage on vref can be used for current regulation. select inter - nal vref-based regulation by setting v vref < v ref_th . the internal v vref is 1v (typ). when an external voltage is used, the range of vref is defined by v vref . fixed off-time (toff-time) regulation fixed off-time regulation turns the h-bridge driver off for a fixed time (t off time), as defined by the value of the c off capacitor connected between tcoff and gnd: t off (s)= c off (pf)/10. if v vref < v vref_th and tcoff is left unconnected, then t off is 15s (typ). during the fixed toff-time regulation, the h-bridge can operate in either slow or fast decay mode. see table 1 . slow decay mode slow decay, also called brake mode, is selected by set - ting v mode > 1.5v. in slow decay, both h-bridge low-side drivers are turned on so that the inductive motor current recirculates through the low-side transistors and the motors terminals see a differential voltage near zero (v diff = 2 x i m x r on_ls ). during the slow-decay toff period (t off ) motor current does not flow through the external v dd /gnd supply and the voltage across r sense is zero. the current decay during t off is a first-order exponential decay with a time constant equal to the motors electrical time constant (l/r). the rate of current decay during t off is proportional to the motors back emf/rotational speed. fast decay mode fast decay mode can be used as an alternative to slow decay during fixed off-time regulation. fast decay is enabled by setting v mode < 0.2v. in fast decay, the h-bridge polarity is reversed during the t off period, which results in faster motor current decay, since Cv dd is applied across the motors terminals. the motor current decrease is first order with an l/r time constant and proportional to (v dd + v emf ). note that if t off is larger than the motors l/r electrical time constant, the inductive current can reverse direction, causing the motor not to start-up. if fixed off-time regula - tion with fast decay is used, select toff carefully, based on the motors electrical characteristics. during fast decay, the motors inductive current recircu - lates through the external v dd supply, which charges up the v dd bypass capacitor. thus the voltage seen across r sense is negative during the t off delay. 25% ripple regulation 25% ripple regulation is based on the h-bridge switching to fast decay period until the motor current falls by 25%. when i m reaches the regulation limit, the bridge enters fast decay until the i m falls to 75% of the current limit. the h-bridge polarity is then turned back to normal drive. thus the motor current ramps up and down between 75% and 100% of the set-point current. 25% ripple regulation eliminates t off time tuning and the tcoff capacitor, allowing motors to be exchanged without redesign. since 25% ripple regulation uses fast decay, the voltage seen across r sense is negative during the time period that the h-bridge polarity is reversed. select 25% ripple regulation mode by setting 0.5v < v mode < 1.0v. leave tcoff unconnected when 25% ripple is used. applications information layout considerations connect duplicate pins (com pins and vdd pins) togeth - er with low-resistance traces. see the current sensing section for further layout recommendations. power considerations the MAX14871 driver can generate more power than the package for the device can safely dissipate. total power dissipation for the device is calculated using the following equation: p total = p driver + p sw + p d maxim integrated 12 MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
the power dissipated inside of the driver is calculated as: p driver = i m_load 2 x r on where i m_load is the motor current and r on is the on- resistance of the high and low-side fets. p sw is the power generated by the driver during the rise/ fall times in switching, and includes both arms of the bridge. calculate p sw using the following equation: p sw = i m_load x 2 x v ds = i m_load x 2 x (1/2 x v dd x f sw x t r ) where i m_load is the motor current, t r is the 200ns (typ) rise or fall time of the driver output, and f sw is the switching frequency. the internal diodes dissipate power during switching, as well. calculate the power dissipated in the diodes as: p d = i m_load x 2 x v bf x t dead x f sw operation without internal current regulation to operate the MAX14871 without internal or external current regulation, connect sns directly to gnd. no sense resistor is required for this configuration. see figure 4 . operation with external current regulation the motor current can be controlled by external pwm regulation using sense-resistor feedback in a control loop. to disable the internal current regulation circuitry of the MAX14871 and use external regulation, connect sns directly to ground. see figure 5 . note that, if fast decay control is used, the com voltage pulses negatively when the h-bridge direction is inverted. use of external capacitors maxim does not recommend using external capacitors across the motor terminals. added capacitance between h-bridge outputs increases the power dissipated in the h-bridge by: p d = v dd 2 x c x f sw where c is the capacitance across m1/m2 and f sw is the m1/m2 switching frequency. this power is dissipated without good reason. note that conducted emi on the v dd lines is also worsened due to the high-capacitive current spikes. figure 5. operation with external current regulation driver vdd sns pwm dir max 14871 gnd com m 1 m 2 en fault driver vdd vdd current regulation r sense mode vref tcoff c irq pwm gpo adc 9 v 3 . 3 v 3 . 3 v m a maxim integrated 13 MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
package information for the latest package outline information and land patterns (foot - prints), go to www.maximintegrated.com/packages . note that a +, #, or - in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing pertains to the package regardless of rohs status. package type package code outline no. land pattern no. 16 tssop-ep u16e+3 21-0108 90-0120 ordering information part temp range pin-package MAX14871eue+ -40c to +85c 16 tssop-ep +denotes a lead(pb)-free/rohs-compliant package. *ep = exposed pad maxim integrated 14 chip information process: bicmos MAX14871 4.5v to 36v full-bridge dc motor driver www.maximintegrated.com
revision history revision number revision date description pages changed 0 9/14 initial release ? 2014 maxim integrated products, inc. 15 maxim integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim integrated product. no circuit patent licenses are implied. maxim integrated reserves the right to change the circuitry and specifcations without notice at any time. the parametric values (min and max limits) shown in the electrical characteristics table are guaranteed. other parametric values quoted in this data sheet are provided for guidance. maxim integrated and the maxim integrated logo are trademarks of maxim integrated products, inc. MAX14871 4.5v to 36v full-bridge dc motor driver for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim integrateds website at www.maximintegrated.com.

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