BU64241GWZ Datasheet, PDF (1/24 Pages) Rohm – Linear Constant Current VCM Driver

Datasheet
Linear Constant Current
VCM Driver
BU64241GWZ
●General Description
The BU64241GWZ is designed to drive voice coil motor
(VCM). 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
■ Current sink output
■ 10 bit resolution current control
■ ISRC mechanical ringing compensation
■ 2-wire serial interface
■ Integrated current sense resistor
●Key Specifications
■ Power supply range
■ Standby current
■ Internal resistance
■ Master clock
■ Output maximum current
2.3 to 4.8 V
0 µA (typ.)
1.5 Ω (typ.)
400 kHz (typ.)
130 mA (typ.)
●Package
UCSP30L1
W (Typ.) ×D (Typ.) ×H (Max.)
1.30 mm × 0.77 mm × 0.33 mm
●Applications
■ Autofocus in mobile camera modules
■ Driving VCM actuators
●Typical Application Circuit
GPIO
HOST
2-wire
serial
Master
PS
SDA
SCL
0.1 to 10µF
VCC
Power Save
2-wire Serial Bus
Interface
&
Ringing Control
10
TSD & UVLO
Pre-driver
VCC
Band Gap
VCC
I_SINK
OUT
OSC
10 bit DAC
1.8V
Band Gap
VREF
V/I
Convertor
RNF
GND
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
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TSZ02201-0H2H0B600460-1-2
01. Jul. 2013 Rev.004