A3971

Data Sheet 29319.32 3971 ADVANCE INFORMATION (Subject to change without notice) May 2, 2000 DUAL DMOS FULL-BRIDGE DRIVER Designed to interface between external PWM control logic and NO CONNECTION 1 NC LOGIC GROUND 2 VDD 24 LOGIC SUPPLY 23 PWM2 inductive loads such as relays, solenoids, dc motors, or stepper motors, each full bridge can operate with output currents to ±2.5 A and operating voltages to 50 V. S10 3 OUT1A 4 22 S20 21 OUT2A Low rDS(on) DMOS output drivers provide low power dissipation during PWM operation. Internal charge pump circuitry is used to create LOAD SUPPLY1 5 VBB1 LOAD 20 VBB2 SUPPLY2 a boosted voltage to fully enhance the high-side DMOS switches. LOGIC LOGIC GROUND 6 GROUND 7 tSENSE1 8 cOUT1B 99 uS11 10 dPWM1 11 ro lyCP1 12 CHARGE PUMP 19 GROUND 18 GROUND 17 SENSE2 16 OUT2B 15 S21 14 VCP 13 CP2 Dwg. PP-069-2 d P OnABSOLUTE MAXIMUM RATINGS at TA = +25°C e eLoad Supply Voltage, VBB ................ 50 V u cOutput Current, IOUT tin nTr...