參數(shù)資料
型號(hào): AH478Z5-BG1
廠商: BCD SEMICONDUCTOR MANUFACTURING LTD
元件分類: 磁阻傳感器
英文描述: MAGNETIC FIELD SENSOR-HALL EFFECT, -10-10mT, RECTANGULAR, THROUGH HOLE MOUNT
封裝: GREEN, TO-95
文件頁數(shù): 1/11頁
文件大小: 249K
代理商: AH478Z5-BG1
SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION
AH478
Data Sheet
1
Nov. 2008 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
General Description
The AH478 is a single coil Hall sensor with output
drivers designed for brush-less DC motor application.
This IC consists of one H-bridge driver for motor's coil
driving and has automatic lock shutdown and restart
function relatively. To avoid coil burning, rotor lock
shutdown detection circuit shut down the output driver
if the rotor is blocked and then the automatic recovery
circuit will try to restart the motor. This function
repeats while rotor is blocked. Until the blocking is
removed, the motor recovers running normally.
If a 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 a magnetic flux density
reversal falls below BRP, causing DO to be turned to
drive and DOB turned to sink.
This IC is available in TO-95 package.
Features
On-chip Hall Sensor
Rotor-locked Shutdown
Automatically Restart
Operating Voltage: 3.5 to 18V
High Output Sourcing/Sinking Capability up to
300mA
Bi-direction H-type Output Drivers for Single
Coil
Internal Bandgap Regulator for Temperature
Compensation
Low Output Switching Current Noise
Operating Temperature: -20 to 85oC
Low Profile TO-95 Package
ESD Rating: 3000V (Human Body Model)
Applications
Single Coil Brushless DC Motor
Single Coil Brushless DC Fan
Figure 1. Package Type of AH478
TO-95
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