Datasheet > AH287Z4-AG1

AH287Z4-AG1

更新时间： 2024-02-26 18:01:14

品牌	Logo	应用领域
BCDSEMI		/
页数	文件大小	规格书
12页	330K
描述
TWO PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION

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技术参数
数据手册

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AH287Z4-AG1 技术参数

生命周期：	Transferred	Reach Compliance Code：	unknown
风险等级：	5.27	主体宽度：	1.62 mm
主体长度或直径：	5.13 mm	滞后：	7 mT
最大磁场范围：	5 mT	最小磁场范围：	-5 mT
安装特点：	THROUGH HOLE MOUNT	最大工作电流：	6.5 mA
最高工作温度：	85 °C	最低工作温度：	-20 °C
最大输出电流：	350 mA	封装形状/形式：	RECTANGULAR
传感器/换能器类型：	MAGNETIC FIELD SENSOR,HALL EFFECT	最大供电电压：	18 V
最小供电电压：	3.5 V	表面贴装：	NO
端接类型：	SOLDER	Base Number Matches：	1

AH287Z4-AG1 数据手册

Preliminary Datasheet

TWO PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION

AH287

Features

General Description

•

On-chip Hall Sensor

Operating Voltage: 4V to 18V

Maximum Output Current: 350mA (ave)

Rotor-locked Protection

Automatic Restart

Adjustable Auto-restart Time

The AH287 is an integrated Hall sensor with output

drivers for brushless DC motor application. This IC

consists of two complementary outputs for motor’s

coil driving and has automatic lock protection and

auto- restart function relatively. To avoid coil burning,

rotor lock shutdown protection circuit shut down the

output driver if the rotor 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. In addition, the auto-restart time is flexible

by adjusting the capacitance (C_CT).

Internal Band-gap Regulator for Temperature

Compensation

•

Operating Temperature: -20˚C to 85˚C

Low Profile TO-94 Package

ESD Rating: 300V (Machine Model)

Placing the device in a variable magnetic field, if the

magnetic flux density is larger than threshold B_OP, 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 B_RP, causing DO to be turned to

drive and DOB turned to sink.

Application

•

Dual-coil Brushless DC Fan

This IC is available in TO-94 package.

TO-94

Figure 1. Package Type of AH287

May 2008 Rev. 1. 0

BCD Semiconductor Manufacturing Limited

12 3 4 5 6 7...12

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