點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
ST1155B
ST1155B
Low-saturation, Low-voltage
Bi-directional Motor Driver
General Specifications
The device is a two-channel low-saturation bi-directional motor driver IC. The design is
optimal for stepper-motor applications, such as cameras, printers, FDDs, or other portable
devices.
Features and Benefits
ꢀ
ꢀ
Low voltage operation ( VDD min = VS1 min = VS2 min = 1.5V )
Low saturation voltage ( Upper transistor + low transistor residual voltage; 0.3V typ. at
400mA; 0.6V typ. at 750mA)
ꢀ
Parallel connection ( two-channel driver: Upper transistor + low transistor residual ; 0.4V
typ. at 800mA )
ꢀ
ꢀ
ꢀ
Separate control logic power supply and motor driver power supply
High output sinking and driving capability
Thin, highly reliable package (SSOP-16)
Pin Assignment
VDD
ENA1
O1
GND
ENA2
O3
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VS1
VS1
O2
VS2
VS2
O4
IN1
IN2
GND
VREF
ST1155B_SSOP16_A05.doc
Version: A.05
-1-
SITI [ SILICON TOUCH TECHNOLOGY INC. ]
