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SDC11557 fiches techniques PDF

SDC - Single-Phase Full-Wave Motor Driver

Numéro de référence SDC11557
Description Single-Phase Full-Wave Motor Driver
Fabricant SDC 
Logo SDC 





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SDC11557 fiche technique
Single-Phase Full-Wave Motor Driver
Datasheet
SDC11557
General Description
The SDC11557 is a single phase full wave motor driver for
DC fan motors, and can apply to three type speed control
methods. The output signals of this IC are the
amplifications of hall input signals. It is suitable for both
game machine and CPU cooler that need silent fans. The
device is built-in lock protection. When the fan is locked,
the device will enter the lockup protection mode. It is also
with thermal shutdown function. In normal operation, the
supply current is less than 5mA. The SDC11557 is available
in MSOP-8 package.
Features
Silent driver
Built-in lock protection and auto restart function
Low standby current (PWM=0), supply current less
than 200uA
FG output
Built-in thermal protection circuit(RoHS Compliant)
Low duty start up
Applications
Motor drivers for silent fan motors
Pin Configuration
MSOP-8
Pin Number
1
2
3
4
5
6
7
8
OUT2 1
VCC 2
IN+ 3
IN- 4
8 GND
7 OUT1
6 PWM
5 FG
Figure 1. Pin Configuration
Pin Name
OUT2
VCC
IN+
IN-
FG
PWM
OUT1
GND
Function
Motor output terminal 2
Power supply terminal
Hall input terminal+
Hall input terminal-
FG signal output terminal
PWM signal input terminal
Motor output terminal 1
GND terminal
Table 1. Pin Description
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
1/8
www.sdc-semi.com

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