●General Description

The BU64291GWZ is designed to drive voice coil motors

(VCM) and operate with PWM to improve system power

efficiency or switch to linear control to improve system

noise. The driver includes ISRC (intelligent slew rate

control) to reduce mechanical ringing to optimize the

camera’s auto focus capabilities.

●Features

„ 2.3 V (Min.) driver power supply

„ Selectable linear and PWM operational modes

„ Current source and sink output

„ 10 bit resolution current control

„ ISRC mechanical ringing compensation

„ 2-wire serial interface

„ Integrated current sense resistor

●Applications

„ Auto focus of Cell Phone

„ Auto focus of Digital still camera

„ Camera Modules

„ Lens Auto focus

„ Web, Tablet and PC cameras

●Key Specifications

„ PWM frequency: 0.5 to 2 MHz

„ Master clock: 400 kHz(Typ.)

„ Output ON resistance: 2.5 Ω(Typ.)

„ Maximum output current: 100 mA (Typ.)

„ Operating temperature range: - 25 to + 85 °C

●Package(s) W(Typ.) x D(Typ.) x H(Max.)

UCSP30L1 0.77 mm x 1.37 mm x 0.33 mm