AT5556 Datasheet, PDF (1/15 Pages) List of Unclassifed Manufacturers – 6-CHANNEL DSC MOTOR DRIVER

AT5556
Preliminary Product Information
6-Channel DSC Motor Driver
Features
• Independent 6-Channel H-Bridge
• Built-in 4 constant voltage drivers, two of
those drivers with brake function.
• Built-in 2 constant current drivers.
• Low on-resistance <1.2 Ω (typ.)
• Built-in charge pump(to drive the upside
NMOS of H-bridge drivers)
• Low Voltage operation
• Built-in Thermal Shutdown Function
• LQFP-48 Package
General Description
The AT5556 is a 6-channel H-bridge
drivers IC for DSC motor application. It
built in with 4 constant voltage drive and 2
constant current blocks to drive auto-focus,
zoom, shutter, auto-exposure motors.
Applications
•DSC motor Driver
Block Diagram
PS
VCC PGND3 PVCC CP1 CP2 CP3
CP4
VG
IN1A
IN1B
IN2A
IN2B
IN3A
IN3B
IN4A
IN4B
IN5A
IN5B
IN6A
IN6B
GND
Thermal Shutdown
and
UVLO
Oscillator
Charge
Pump
Charge
Pump
Logic
Block
Level Shift
Pre Driver
H-Bridge
H-Bridge
H-Bridge
H-Bridge
H-Bridge
H-Bridge
VM1
OUT1A
OUT1B
OUT2A
OUT2B
PGND1
VM2
OUT3A
OUT3B
OUT4A
OUT4B
PGND2
VM3
OUT5A
OUT5B
OUT6A
OUT6B
Vref
Vref
VC1 VC2 VC3 VC4 RFG1
RFG2
Aimtron reserves the right without notice to change this circuitry and specifications.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone]
WWW: http://www.aimtron.com.tw
Fax: [phone]
Email: [e-mail]
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04/12/10