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A3972 Datasheet - Allegro MicroSystems

A3972 - Dual DMOS Full-Bridge Microstepping PWM Motor Driver

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.

The serial data is written as two 19-bit words: 1 bit to select the word and 18 bits of data.

The

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,

A3972 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

A3972_AllegroMicroSystems.pdf

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Datasheet Details

Part number:

A3972

Manufacturer:

Allegro MicroSystems

File Size:

295.85 KB

Description:

Dual dmos full-bridge microstepping pwm motor driver.

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