The A4989 is a dual full-bridge gate driver with integrated micro stepping translator suitable for driving a wide range of higher power industrial bipolar 2-phase stepper motors (typically 30 to 500 W). Motor power is provided by external N-channel power MOSFETs at supply voltages from 12 to 50 V.

FEATURES:

1. 2-wire step and direction interface
2. Dual full-bridge gate drive for N-channel MOSFETs
3. Operation over 12 to 50 V supply voltage range
4. Synchronous rectification
5. Cross-conduction protection
6. Adjustable mixed decay
7. Integrated sinusoidal DAC current reference
8. Fixed off-time PWM current control
9. Enhanced low current control when microstepping
10. Pin compatible with the A3986

SPECIFICATIONS:

1.  Motor Type : Stepper Bipolar
2. Output Configuration: Pre-Driver – Half Bridge (4)
3. Interface: Step/Directionnbsp;
4. Step Resolution: 1, 1/2, 1/4, 1/16nbsp;
5. Voltage Supply: 3 V ~ 5.5 Vnbsp;
6. Voltage Load: 12 V ~ 50 V
7. Operating Temperature: -20°C ~ 85°C (TA)
8. Mounting Type: Surface Mount
9. Package Case: 38-TFSOP (0.173″, 4.40mm Width)

RELATED DOCUMENTS:

1. Datasheet.

PACKAGE INCLUDES:

1. 1 x Dual Full-Bridge MOSFET Driver IC A4989SLDTR-T (38-TSSOP)