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A3972 - Dual DMOS Full-Bridge Microstepping PWM Motor Driver

General Description

Serial Interface.

The A3972SB is controlled via a 3-wire (clock, data, strobe) serial port.

The programmable functions allow maximum flexibility in configuring the PWM to the motor drive requirements.

Key Features

  • I ±1.5 A, 50 V Continuous Output Rating I Low rDS(on) DMOS Output Drivers I Optimized Microstepping via 6-Bit Linear DACs I Programmable Mixed, Fast, and Slow Current-Decay Modes I 4 MHz Internal Oscillator for Digital Timing I Serial-Interface Controls Chip Functions I Synchronous Rectification for Low Power Dissipation I Internal UVLO and Thermal Shutdown Circuitry I Crossover-Current Protection I Precision 2 V Reference I Inputs Compatible with 3.3 V or 5 V Control Signals I Sleep and Idle Mo.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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 ........................................