Datasheet Details
- Part number
- A3957
- Manufacturer
- Allegro
- File Size
- 473.00 KB
- Datasheet
- A3957-Allegro.pdf
- Description
- FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER
A3957 Description
Data Sheet 29319.44B 3957 FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER The A3957SLB is designed for driving one winding of a bipolar stepper NO 1 NC.
Slow Current-Decay Mode Mixed Current-Decay Mode Fast Current-Decay Mode
Table 3.
DAC Truth Table
DAC Data D3 D2 D1 D0 HHHH HHH L HH L H HH.
A3957 Features
* ±1.5 A Continuous Output Current
* 50 V Output Voltage Rating
* Internal PWM Current Control
* 4-Bit Non-Linear DAC for 16-Bit Microstepping
* Satlington® Sink Drivers
* Fast, Mixed Fast/Slow, and Slow Current-Decay Modes
* Internal Transient-Suppression Diodes
* In
A3957 Applications
* section. www. allegromicro. com
3
3957 FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER
ELECTRICAL CHARACTERISTICS at TA = 25˚C, VBB = 5 V to 50 V, VCC = 4.5 V to 5.5 V (unless otherwise noted. )
Characteristic
Symbol Test Conditions
Min. Limits Typ. Max. Units
Power Outputs
Load Supply V
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