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AH480-MA-A PDF预览

AH480-MA-A

更新时间： 2024-09-15 19:21:51
品牌 Logo 应用领域
美台 - DIODES /
页数 文件大小 规格书
9页 215K
描述
Sensor/Transducer, Bipolar, 8 Pin, Plastic/epoxy

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AH480-MA-A 数据手册

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AH477/480  
Single Phase Hall Effect Latch  
„ Features  
„ General Description  
AH477/480 is the integrated Hall sensor with output  
drivers designed for electrical commutation of  
brush-less DC motor application. The devices are  
included as follows: on-chip Hall voltage generator  
for magnetic sensing; the error amplifier that  
amplifies the Hall voltage; a comparator is to  
provide switching hysteresis for noise rejection; the  
bi-direction drivers for sinking and driving large  
current load. Internal bandgap regulator is used to  
provide temperature compensated bias for internal  
circuits and allows a wide operating supply voltage  
range. On top of that, AH480 provides auto  
shutdown and auto restart function for the DC fan to  
consume less power in the lock up condition.  
-On-chip Hall sensor  
-Bi-direction H type output drivers for single coil  
-Internal bandgap regulator allows temperature  
compensated operations and a wide operating  
voltage range  
-High output sourcing/sinking capability up to  
350mA  
-Operating voltage: 3.5V~20V  
-Low output switching current noise  
-Auto-shutdown and auto-restart provided (AH480)  
-SIP-4L package for AH477; SIP-5L, MSOP-8L  
packages for AH480  
„ Applications  
If a magnetic flux density larger than threshold Bop,  
DO is turned to sink and DOB is turned to drive.  
The output state is held until a magnetic flux density  
reversal falls below Brp causing DO to be turned to  
drive and DOB turned to sink.  
-Single-coil Brush-less DC Fan  
-Single-coil Brush-less DC Motor  
AH477/480 is rated for operation over-temperature  
range from -20 oC to 85 oC and voltage range from  
3.5V to 20V. The devices are available in low cost  
die forms or rugged SIP-4/5L and MSOP-8L.  
„ Pin Configuration  
„ Pin Descriptions  
Front View  
Front View  
(1) SIP-4L(AH477)  
Name  
P/I/O Pin #  
Description  
Positive Power Supply  
Output Pin  
AH480  
AH477  
Vcc  
P
O
O
P
1
2
3
4
DO  
DOB  
Vss  
Output Pin  
Ground  
(2) SIP-5L(AH480)  
Name  
P/I/O Pin #  
Description  
Timing Capacitor  
Positive Power Supply  
Output Pin  
CT  
I/O  
P
O
O
P
1
2
3
4
5
Vcc  
DO  
DOB  
Vss  
Output Pin  
1 2 3 4  
1 2 3 4 5  
Ground  
SIP-4L  
SIP-5L  
(3) MSOP-8L(AH480)  
Name  
Vss  
CT  
P/I/O Pin #  
Description  
Ground  
P
I/O  
O
1, 2  
3
1
8
Timing Capacitor  
Frequency Generator  
Positive Power Supply  
Output Pin  
FG  
Vcc  
DO  
4
2
3
4
7
6
5
P
5, 6  
7
AH480  
O
O
DOB  
8
Output Pin  
MSOP-8L  
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of  
this product. No rights under any patent accompany the sale of the product.  
Rev.0.1 Aug 9, 2004  
1/9  
1234567...9

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