|
BU64985GWZ Datasheet, PDF (1/25 Pages) Rohm – Bi-directional VCM driver for Auto focus | |||
|
Bi-directional VCM driver for Auto focus
BU64985GWZ
General Description
The BU64985GWZ is designed to drive Bi-directional
voice coil motors. Additionally the driver is able to source
the output current without the need for a direction control
signal. The driver includes ISRC (intelligent slew rate
control) to reduce mechanical ringing to optimize the
cameraâs autofocus capabilities.
Features
ï® 1.8V Power Supply
ï® Bi-directional Constant Current Driver
ï® Current Source and Sink Output
ï® 10 bit Resolution Current Control
ï® 2-wire Serial Interface (I2C Fm+ compatible)
ï® Integrated Current Sense Resistor
ï® Power-on Reset
ï® Thermal Shutdown Protection
Applications
ï® Mobile Camera Module
ï® Bi-directional VCM Actuators
Key Specifications
ï®Power Supply Range:
ï®Standby Current:
ï®Internal Resistance:
ï®Master Clock:
ï®Maximum Output Current:
ï®Temperature Range:
Packages
1.6V to 1.98V
0µA (Typ)
1.3Ω (Typ)
400kHz (Typ)
+60mA, -60mA (Typ)
-25°C to +85°C
UCSP30L1A
W (Typ) x D (Typ) x H (Max)
0.77mm x 1.2mm x 0.33mm
Typical Application Circuit
1.8V
1.8V
VDVDCC
00.1.1toto
1100µuFF
I2C
master
Power save
VREF
TSD
SCL
Direction
LOGIC
10 bit
DAC
Control
&
SDA
Pre driver
OUTPUT
Control_A
OUTPUT
Control_B
POR
Current
+
Sense
-
GND
Figure 1. Typical Application Circuit
Isource
VCM MTR
Isink
âProduct structureï¼Silicon monolithic integrated circuit
.www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111ã»15ã»001
âThis product is not designed protection against radioactive rays
1/21
TSZ02201-0K1K0B601860-1-2
6. Oct.2016 Rev.003
|
▷ |