Product Summary

The 4983ET is a DMOS Microstepping Driver with built-in translator for easy operation. It is designed to operate bipolar stepper motors in full-, half-, quarter-, eighth, and sixteenth-step modes, with an output drive capacity of up to 35 V and ±2 A. The 4983ET includes a fixed off-time current regulator which has the ability to operate in Slow or Mixed decay modes.

Parametrics

4983ET absolute maximum ratings: (1)Load Supply Voltage VBB: 35 V; (2)Output Current: IOUT:±2 A, Duty Cycle < 20%: ±2.5 A; (3)Logic Input Voltage VIN: –0.3 to 7 V; (4)Sense Voltage VSENSE: 0.5 V; (5)Reference Voltage VREF: 4V; (6)Operating Ambient Temperature TA Range S: –20 to 85 °C; (7)Maximum Junction TJ(max): 150 °C; (8)Storage Temperature Tstg: –55 to 150 °C.

Features

4983ET features: (1)Low RDS(ON)outputs; (2)Automatic current decay mode detection/selection; (3)Mixed and Slow current decay modes; (4)Synchronous rectification for low power dissipation; (5)Internal UVLO; (6)Crossover-current protection; (7)3.3 and 5 V compatible logic supply; (8)Very thin profile QFN package; (9)Thermal shutdown circuitry.

Diagrams

4983ET block diagram