Datasheet > H277

H277

更新时间： 2024-09-17 12:24:15

品牌	Logo	应用领域
HSMC		传感器
页数	文件大小	规格书
7页	278K
描述
On-chip Hall sensor

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数据手册

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H277 数据手册

Spec. No. : IC200907

Issued Date : 2009.04.03

Revised Date :2009.10.29

Page No. : 1/7

HI-SINCERITY

MICROELECTRONICS CORP.

H277

Complementary Output Hall Effect Sensor IC

General Description

H277 is designed to integrate Hall sensor with output driver together on the

same chip. It is suitable for dual coils brush-less DC motors, dual coils brush-less DC fan, speed measurement,

and revolution counting.

It includes a band-gap reference voltage source, a Hall device, an amplifier, a hysteretic controller and an open-

collector output drive capable of sinking up to 300mA current load. An on-chip protection diode is implemented to

prevent reverse power fault.

H277 has a control circuit to prevent “dead angle” from logic race condition in DC Fan. It has excellent

characteristic of temperature compensation. The internal temperature compensated voltage source can let sensor

to get uniform sensitivity in a wide temperature range.

It is rated for operation over temperature rage from -20^oC to +85^oC and voltage ranges from 3.0V to 20V.

Features

• On-chip Hall sensor

• 3.0V to 20V operating voltage

• Internal Temperature compensation

• Special design providing logic race condition immunity, shorter switching time, and good switch reliability

• 300mA output sink current

• Internal on-chip protection diode

• SIP-4L Package

Applications

• Dual-coil Brush-less DC Motor

• Dual-coil Brush-less DC Fan

• Revolution Counting

• Speed Measurement

Typical Application Circuit (Brush-Less DC Fan)

Fig.2 H277 Application Circuit

H277

HSMC Product Specification

12 3 4 5 6 7

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