A3972

3972 CHARGE PUMP DUAL DMOS FULL-BRIDGE MICROSTEPPING PWM MOTOR DRIVER VCP CP1 CP2 OUT1B LOAD SUPPLY1 GROUND GROUND SENSE1 OUT1A STROBE CLOCK DATA 1 2 3 4 5 6 7 8 9 9 10 11 12 24 23 22 21 20 19 18 17 16 OSC SLEEP VREG OUT2B LOAD SUPPLY2 GROUND GROUND SENSE2 OUT2A LOGIC SUPPLY MUX REF 6-BIT DAC & LOGIC 6-BIT DAC & LOGIC VBB1 VBB2 SERIAL PORT VDD 15 14 13 Dwg. PP-069-3 ABSOLUTE MAXIMUM RATINGS at TA = +25°C Load Supply Voltage, VBB ................ 50 V Output Current, IOUT ...................... ±1.5 A Logic Supply Voltage, VDD .............. 7.0 V Logic Input Voltage Range, VIN ................ -0.3 V to VDD + 0.3 V Reference Voltage, VREF ..................... 3 V Sense Voltage (dc), VS ................ 500 mV Package Power Dissipation, PD .......................................... 3.1 W Operating Temperature Range, TA .......................... -20°C to +85°C Junction Temperature, TJ ............. +150°C Storage Temperature Range, TS ......................... -55°C to +150°C Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified current rating or a junction temperature of 150°C. Designed for pulse-width modulated (PWM) current control of bipolar microstepping stepper motors, the A3972SB is capable of continuous output currents to ±1.5 A and operating voltages to 50 V. Internal fixed off-time PWM current-control timing circuitry can be programmed via a serial interface to o...