Product Summary

The A3973SLBT is a dual DMOS full-bridge micro-stepping PWM mottoer driver. The A3973SLBT is designed for pulse-width modulated (PWM) current control of bipolar microstepping stepper motors, the A3973SLBT is capable of continuous output currents to ±1 A and operating voltages to 35V. The A3973SLBT is electrically identical and differ only in package style. The A3973SLBT is supplied in a 24-lead plastic SOIC with a copper batwing power tab for surface-mount applications.

Parametrics

A3973SLB absolute maximum ratings: (1) Load Supply Voltage, VBB: 35V; (2) Output Current, IOUT: ±1.0A; (3) Logic Supply Voltage, VDD: 7.0V; (4) Logic Input Voltage Range, VIN: -0.3 V to VDD + 0.3 V; (5) Reference Voltage, VREF: 3V; (6) Sense Voltage (dc) , VS: 500mV; (7) Package Power Dissipation: 2.2 W; (8) Operating Temperature Range,TA: -20°C to +85°C; (9) Junction Temperature, TJ: +150°C; (10) Storage Temperature Range,TS: -55°C to +150°C.

Features

A3973SLBT features: (1) ±1 A, 35 V Continuous Output Rating; (2) Low rDS(on)DMOS Output Drivers; (3) Optimized Microstepping via 6-Bit Linear DACs; (4) Programmable Mixed, Fast, and Slow Current-Decay Modes; (5) 4 MHz Internal Oscillator for Digital Timing; (6) Serial-Interface Controls Chip Functions; (7) Synchronous Rectification for Low Power Dissipation; (8) Internal UVLO and Thermal Shutdown Circuitry; (9) Crossover-Current Protection; (10) Precision 2 V Reference; (11) Inputs Compatible with 3.3 V or 5 V Control Signals; (12) Sleep and Idle Modes.

Diagrams

A3973SLBT Pin Cinfiguration

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
A3973SLBTR
A3973SLBTR

IC MOTOR DRIVER PWM DUAL 24SOIC
Data Sheet
Negotiable 
A3973SLBTR-T
A3973SLBTR-T

IC MOTOR DRIVER PWM DUAL 24SOIC
Data Sheet
Negotiable