Key facts
- Brand
- Allegro
- Model
- A3955SB
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-06-05
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Allegro MicroSystems A3955SB/A3955SLB Full-Bridge PWM Microstepping Motor Driver Datasheet
The document provides a comprehensive technical overview of the A3955SB (DIP) and A3955SLB (SOIC) devices, which are designed to drive one winding of a bipolar stepper motor in microstepping modes. These electrically identical chips feature internal PWM current control combined with a three-bit nonlinear digital-to-analog converter.
Read onlineAllegro A3955SB specifications
| Load Supply Voltage (V BB) | 50 V |
|---|---|
| Output Current (Continuous) | ±1.5 A |
| Logic Supply Voltage (V CC) | 7.0 V |
| Operating Temperature Range | -20˚C to +85˚C |
| Junction Temperature (Max) | +150˚C |
Source: Allegro MicroSystems A3955SB/A3955SLB Full-Bridge PWM Microstepping Motor Driver Datasheet
All Allegro A3955SB documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What are the available packages for the A3955?
The device is supplied in a 16-pin dual-in-line plastic package (suffix 'B') and a 16-lead plastic SOIC with copper heat-sink tabs (suffix 'LB').
From: Allegro MicroSystems A3955SB/A3955SLB Full-Bridge PWM Microstepping Motor Driver Datasheet
What microstepping modes are supported?
The device allows motor current control in full-, half-, quarter-, or eighth-step (microstepping) modes.
From: Allegro MicroSystems A3955SB/A3955SLB Full-Bridge PWM Microstepping Motor Driver Datasheet
What is the maximum continuous output current of the A3955 driver?
The driver can supply a continuous output current of ±1.5 A.
What supply voltage range can the A3955 handle?
It is rated for load supply voltages up to 50 V.