Dual DMOS Full-Bridge Microstepping PWM Motor Driver
3972
CHARGE PUMP
DUAL DMOS FULL-BRIDGE MICROSTEPPING PWM MOTOR DRIVER
VCP CP1 CP2 OUT1B LOAD SUPPLY1 GROUND GROUND SENS...
Description
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...
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