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PDF SA276 Data sheet ( Hoja de datos )

Número de pieza SA276
Descripción BRUSH-LESS DC-FAN DRIVER
Fabricantes Silan Microelectronics 
Logotipo Silan Microelectronics Logotipo



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No Preview Available ! SA276 Hoja de datos, Descripción, Manual

SA276
BRUSH-LESS DC-FAN DRIVER WITH ON-CHIP HALL SENSOR
DESCRIPTION
SA276 mainly designed for electronic commutation of brush-less DC
fan. This IC internally includes the Hall Plate, Regulator, Pre-Amplifier,
Comparator, and a pair of complementary open-collector Outputs (DO,
DOB).
SA276 internally includes power-reverse protecting diode, the
protecting diode only protects chips but not for coils. If necessary, add
one external diode to block the reverse current from coils.
1234
TO - 94
FEATURES
* On-chip hall sensor
* Wide operating voltage: 3.5V to 20V
* 400mA (avg) output sink current
* Build-in power-reverse protecting diode only for reverse power
connecting
ORDERING INFORMATION
Device
SA276
Package
TO-94
APPLICATIONS
* Dual coils brush-less DC fan
* Dual coils brush-less DC motor
* Revolution counting
* Speed measurement
BLOCK DIAGRAM
VCC 1
REG
Hall
PRE
AMP
2 DO
4 GND
3 DOB
ABSOLUTE MAXIMUM RATINGS (Tamb=25°C)
Characteristics
Supply Voltage
Reverse Vcc Polarity Voltage
Magnetic Flux Density
Symbol
VCC
Vrcc
B
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
Value
25
-25
Unlimited
Unit
V
V
G
(To be continued)
REV: 1.1 2004.07.15
Page 1 of 5

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SA276 pdf
ATTACH
Revision History
Data
2004.06.28
2004.07.15
REV
1.0
1.1
Description
Original
Modify the “PACKAGE OUTLINE”.
SA276
Page
5
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV: 1.1 2004.07.15
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