AH477A Просмотр технического описания (PDF) - BCD Semiconductor

Номер в каталоге

Компоненты Описание

производитель

AH477A

SINGLE PHASE HALL EFFECT LATCH

BCD Semiconductor 

Data Sheet

SINGLE PHASE HALL EFFECT LATCH

General Description

Features

AH477A

The AH477A is an integrated Hall sensor with H-

bridged output driver designed for brushless DC motor

applications. The device includes an on-chip Hall sen-

sor for magnetic sensing, an amplifier that amplifies

the Hall voltage, a comparator to provide switching

hysteresis for noise rejection, a bi-directional drivers

for sinking and driving large current load. It also

includes an internal bandgap regulator to provide tem-

perature compensated bias for internal circuits and

allows a wide operating supply voltage range.

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.

The AH477A is available in TO-94 (SIP-4L) package.

· On-Chip Hall Sensor

· Operating Voltage: 3.5V to 18V

· H-Bridge Output Drivers for Single Coil

· Internal Bandgap Regulator for Temperature

Compensation

· Low Output Switching Current Noise

· Operating Temperature: -20oC to 85oC

· Low Profile TO-94 (SIP-4L) Package

· ESD Rating: 6000V (Human Body Model)

· Suitable for PWM Power Supply Control Speed

Applications

· Single-coil Brushless DC Motor

· Single-coil Brushless DC Fan

Oct. 2009 Rev. 1. 2

TO-94

Figure 1. Package Type of AH477A

BCD Semiconductor Manufacturing Limited

1

Share Link: