A3907 Low Voltage Voice Coil Motor Driver

Low Voltage Voice Coil Motor Driver

Data sheet

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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 ¨C active low
• 2.3 V to 5.5 V operation

Applications

• Camera focus motor

Description

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 V_DD.

Functional Block Diagram