A3903 Description
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.
A3903 Key Features
- Constant voltage operation (adjustable)
- 500 mA output peak rating
- Low power standby mode
- Small 2 mm × 2 mm, 0.55 mm nominal height DFN
- 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