AT5558
Preliminary Product Information
5-Channel DSC Motor Driver
Features
• Independent 5-Channel H-Bridge
• Built-in 4 constant voltage drivers, all of
those drivers with brake function.
• Built-in 1 constant current drivers with
brake function.
• Low on-resistance <1.20
Ω
(typ.)
• Low Voltage operation
• Built-in Thermal Shutdown Function
• QFN-32 Package
Block Diagram
VCC
AGND
General Description
The AT5558 is a 5-channel H-bridge
drivers IC for DSC motor application. It
built in with 4 constant voltage drivers and
1 constant current block to drive auto-focus,
zoom, shutter, auto-exposure motors.
Applications
•DSC motor Driver
* Protected by U.S. Patent #6,943,514
Thermal Shutdown
and
UVLO
VM1
OUT1A
OUT1B
OUT2A
OUT2B
IN1A
IN1B
IN2A
IN2B
H-Bridge
H-Bridge
IN3A
IN3B
IN4A
IN4B
PGND1
Logic
Block
Pre
Driver
H-Bridge
H-Bridge
VM2
OUT3A
OUT3B
OUT4A
OUT4B
IN5A
IN5B
PGND2
VM3
OUT5A
OUT5B
H-Bridge
Vref
Vref
VC12 VC3 VC4 VC5
RFG
Aimtron reserves the right without notice to change this circuitry and specifications.
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
Fax: 886-3-563-0879
WWW:
http://www.aimtron.com.tw
06/10/05 REV:1.1
Email:
service@aimtron.com.tw
1
AIMTRON [ AIMTRON TECHNOLOGY ]
