A3907: Low Voltage Voice Coil Motor Driver


Designed for linear control of small form factor voice coil motors, the A3907 is capable of peak output currents to 102 mA and operating voltages to 5.5 V.

Internal circuit protection includes thermal shutdown with hysteresis, flyback clamp diode, and undervoltage monitoring of VDD.

Top Features

  • WLCSP package for minimum footprint
  • Ramp control circuit
  • Fixed I2C logic thresholds
  • 10-bit D-to-A converter
  • 100 µA resolution
  • Low voltage I2C serial interface
  • Low current draw sleep mode – active low
  • 2.3 V to 5.5 V operation

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check Stock
A3907ECGTR 6-lead CSP -40°C to 85°C Yes View Data Contact your
local sales rep
Distributor Stock
APEK3907ECG-01-T DEMO BOARD -40°C to 85°C No -- 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.


The A3907 is available in a bumped wafer level chip scale package (WLCSP) (suffix CG).

CG Chip Scale 6 bump