MA477MP4 [MPOWER]
Single Phase Hall Effect Fan Driver;
| 型号： | MA477MP4 |
| 厂家： | 
Major-Power |
| 描述： | Single Phase Hall Effect Fan Driver |
| 文件： | 总2页 (文件大小：119K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MA477M
Single Phas e Hall Effect Fan Driver
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GENERAL DESCRIPTION
The MA477M is an integrated Hall sensor with H-Bridged output driver designed for
brushless DC motor applications. The device is using HV BCD process includes an on-chip
Hall sensor for magnetic sensing, an amplifier that amplifies the Hall voltage, a comparator to
provide switching hysteresis for noise rejection, bi-directional drivers for sinking and driving
large current load.
Placing the device in a variable magnetic field, if the magnetic flux density is larger than
threshold BOP, the DO is turned to sink and DOB is turned to drive. This output state is held
until the magnetic flux density reverses and falls below BRP, then causes DO to be turned to
drive and DOB turned to sink.
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FEATURES
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On-Chip High Sensitivity Hall-effect Sensor
Operating Voltage: 3.5V to 20V
H-Bridge Output Drivers for Single Coil
Built-in Reverse Protection Diode
Thermal Shutdown Protection
Low Output Switching Current Noise
-40°C to 125°C Operating Temperature
Low Profile SOT23-6F and SIP-4L Packages
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PIN ASSIGNMENT
The packages of MA477M are SOT23-6F & SIP-4L; the pin assignment is given by:
1.9mm
(Top View)
1.30mm
(Sensor Location)
VDD VDD DO
6
5
4
Name
VDD Supply Voltage
DO Output 1
Description
(Marking Side)
(Sensor Location)
0.8mm
(Marking Side)
DOB Output 2
GND Ground.
1
2
3
DOB
NC GND
1
2
3
4
1.0mm
VDD DO
DOB GND
SOT23-6F
SIP-4L
Major Power Technology Co., Ltd.
Rev.1.5
19th, Mar., 2021
1/7
MA477M
❖
BLOCK DIAGRAM
VDD
Regulator
DO
H- bridge
MOS Driver
Hall
Plate
Control
Logic
Amp.
DOB
GND
Thermal
Shutdown
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ORDER / MARKING INFORMATION
Order Information (SIP-4L)
Top Marking (SIP-4L)
MA477MXXX
Part number
477M
Y Y WW X
ID code:internal
WW:01~52
Package Type
P4: SIP-4L
Packing
Blank: Bag
Year:17=2017
Order Information (SOT23-6F)
Top Marking (SOT23-6F)
MA477M
X X
ID Code: Internal
u Y W X
H
Week: 01~26(A~Z)
27~52(a~z)
Year: 8 = 2018
Package Type
CP: SOT23-6F
Packing
Blank: Bag
A : Taping
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ABSOLUTE MAXIMUM RATINGS (at TA=25°C)
Characteristics
Symbol
Rating
22
-30
Unlimited Gauss
250
Unit
V
V
Supply Voltage
VDD
VRDD
B
Reverse VDD Polarity Voltage
Magnetic Flux Density
Continuous
SIP-4L Hold
IO
300
500
240
300
500
mA
Peak (start-up)
Continuous
Output Current
SOT23-6F Hold
IO
mA
Peak (start-up)
Major Power Technology Co., Ltd.
Rev.1.5
19th, Mar., 2021
2/7
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