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PDF SDC11556 Data sheet ( Hoja de datos )
| Número de pieza | SDC11556 | |
| Descripción | Single-Phase Full-Wave Motor Driver | |
| Fabricantes | SDC | |
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Single-Phase Full-Wave Motor Driver for Fan Motor
Datasheet
SDC11556
General Description
The SDC11556 is a single phase DC fan motor driver IC. It
is optimal for use in applications that require
miniaturization and low noise. The driver includes lock
detection, thermal shutdown and over-current protection.
Maximum output current is 1A. Package is Pb-free and
Halogen-free.
Features
Operation voltage: 2.0V~6.0V
Lock detection
Control output terminal(FG)
Built-in thermal shutdown circuit
Over current protection
Low cross-over noise
Application
Single phase DC fan motor
Pin Configuration
MSOP-8
Pin Number
1
2
3
4
5
6
7
8
Pin Name
OUT2
H+
HB
H-
FG
VCC
OUT1
GND
OUT2 1
H+ 2
HB 3
H- 4
Figure 1. Pin Configuration
Motor output terminal
Hall input terminal
Hall bias
Hall input terminal
FG signal output terminal
Power supply terminal
Motor output terminal
Ground terminal
Function
Table 1. Pin Description
8 GND
7 OUT1
6 VCC
5 FG
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
1/8
www.sdc-semi.com
1 page  
Single-Phase Full-Wave Motor Driver for Fan Motor
Typical Application
M
OUT2
H+
R1
HB
H-
OSC
Lock
Protection
OCP
TSD
Hall
Bias
Control
Datasheet
SDC11556
GND
OUT1
VCC
Vin
D1
ZD1 C1
FG
R2
Figure 4. Typical Application
Reverse connection of power supply may break the
device. A countermeasure is needed such as using
reverse current protection diode (D1) between power
supply and VCC terminal
The BEMF causes re-circulate current to power supply,
when power-on or output changes. It may cause VCC
terminal to raise voltage, especially using reverse current
protection diode (D1) because of there is no way to
return current to power supply. In such case, please take
necessary measures like below.
Connect a zener diode (ZD1) between VCC and GND
terminal not to exceed the absolute maximum rating
voltage.
Connect a capacitor (C1) between VCC and GND terminal
to make the path of return current to power supply.
January, 2013 Rev. 1.0
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
5/8
www.sdc-semi.com
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet SDC11556.PDF ] | |
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