A3910: Dual Half Bridge Motor Driver


The A3910 is a dual half bridge motor driver, designed for low cost, low voltage battery operated power applications. The outputs are rated for operation up to 500 mA.

Direct control of high- and low-side drivers is implemented to allow either high-side or low-side PWM. The motor can be connected to either supply or GND. Using a MOS switch results in improved braking action for the motor, compared to implementation with simple clamp diode.

The A3910 is supplied in a 2 mm × 2 mm 8-contact DFN package (EE) with exposed thermal pad. The package is lead (Pb) free, with 100% matte tin leadframe plating.

Top Features

  • Low RDS(on) outputs
  • Standby mode with zero current drain
  • Small 2 mm × 2 mm DFN package
  • Crossover-current protection
  • Thermal shutdown protection

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check Stock
APEK3910EEE-01-T DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep
Distributor Stock
A3910EEETR-T 8-lead DFN -40°C to 85°C Yes View Data Contact your
local sales rep
Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.



8-contact DFN with Exposed Thermal Pad (suffix EE)