BU24020GU_13 Datasheet, PDF (1/21 Pages) Rohm – u - step System Lens Driver for Digital Still Cameras

Datasheet
System Lens Drivers
μ-step System Lens Driver
for Digital Still Cameras
BU24020GU
●General Description
BU24020GU is a system Lens Driver that uses μ-step
driving to make the configuration of the sophisticated,
high precision and low noise lens driver system possible.
This IC has a built-in driver for both DC motor and voice
coil motor and a μ-step controller that decreases CPU
power. Therefore, multifunctional lens can be applied.
●Features
„ Built-in 4channels Driver block.
1ch-4ch: Voltage control type H-bridge
(Adaptable to STM 2systems)
„ Built-in 2 channels PI driving circuit
„ Built-in PLL circuit
●Key Specifications
„ Digital Power Supply Voltage:
„ Driver Power Supply Voltage:
„ Output Current (1ch-4ch):
„ Input Clock Frequency:
„ FET ON Resistance (1ch-4ch):
„ Operating Temperature Range:
2.7V to 3.6V
2.7V to 5.5V
±500mA(Max)
1MHz to 28MHz
1.5Ω(Typ)
-20℃ to +85℃
●Package
VCSP85H2
2.60mm x 2.60mm x 1.00mm
●Applications
„ Digital still cameras
●Typical Application Circuit
Example1
Photo interrupter
DVDD
DVSS
OUT3A
3ch
M
OUT3B Driver
OUT4A
OUT4B
4ch
Driver
Logic
MVCC12
MVCC34
MGND12
MGND34
OUT1A
1ch
Driver ^OUT1B
M
OUT2A
2ch
Driver OUT2B
Main Host
○Product structure：Silicon monolithic integrated circuit ○This product is not designed for protection against radioactive rays
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TSZ22111・14・001
1/17
TSZ02201-0M2M0BC12020-1-2
18.Apr.2013 Rev.002