Allegro MicroSystems A3903
The A3903 is a low voltage bidirectional DC motor driver with a typical input voltage range of 3 to 5.5 V and output currents up to 500 mA. The unique output full-bridge incorporates sourceside linear operation to allow a constant voltage across the motor coil. This regulated output minimizes motor voltage change due to I × RDS(on) variation and battery voltage tolerance.| Part No. | A3903 |
|---|---|
| Datasheet | A3903 Download |
| Manufacturer |  Allegro MicroSystems |
| Description | Low Voltage DC Motor Driver |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● Constant voltage operation (adjustable)● 500 mA output peak rating
● Low power standby mode
● Small 2 mm × 2 mm, 0.55 mm nominal height DFN package
● Typical input voltage range of 3 to 5.5 V
● Adjustable constant voltage or PWM operation
● Less than 500 nA standby mode current
● –40 to 85 operating temperature range PACKAGE: 8-Contact DFN (suffix EE) Approximate footprint
DESCRIPTION
Logic input pins are provided to control the motor direction of rotation, brake, and standby (< 500 nAsupply current) modes and to allow optional PWM of the sink drivers. Internal protection circuitry includes thermal shutdown, undervoltage lockout, and crossover current (shoot-through) protection. The A3903 is supplied in a 2 mm x 2 mm, 0.55 mm nominal height, 8-lead DFN package, with exposed thermal pad (package suffix EE). This small footprint package is lead (Pb) free, with 100% matte tin leadframe plating.APPLICATIONS
include:● Robotic actuators and pumps
● Portable printer...
