AH287-PG-B

更新时间： 2024-02-19 11:53:37

品牌	Logo	应用领域
美台 - DIODES		运动控制电子器件风扇信号电路电动机控制电机高压
页数	文件大小	规格书
11页	205K
描述
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR

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技术参数
数据手册

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AH287-PG-B 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
Reach Compliance Code：	unknown	风险等级：	5.81
Is Samacsys：	N	Base Number Matches：	1

AH287-PG-B 数据手册

AH287

HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR

CONTROLLER

General Description

Features

AH287 is a monolithic fan motor controller with Hall sensor’s

capability. It contains two complementary open-drain drivers for

motor’s coil driving, automatic lock shutdown and restart function

relatively.

•

On Chip Hall Sensor

Rotor-Locked Shutdown

Automatically Restart

Built-in Zener Protection for Output Driver

Operating Voltage: 3.8V~28V

Output Current: I_O(AVE)= 400mA

Lead Free Packages: SIP-4L and SOT89-5L (Note 1)

SIP-4L and SOT89-5L: Available in “Green” Molding

Compound (No Br, Sb)

Rotor-lock shutdown detection circuit turns off the output driver

when the rotor is blocked to avoid coil overheat. Then, the

automatic recovery circuit will restart the motor. These protected

actions are repeated and periodic during the blocked period. Until

the blocking is removed, the motor recovers and runs normally.

•

Lead Free Finish/ RoHS Compliant (Note 2)

Typical Application Circuit

24V

287

GND

DOB

48V

Note: The optional Capacitor C1 and Diode D3 are for power stabilization. C1 is recommended to be E-Cap., luF/25V;

D3 is recommended to be Zener Diode, V_Z=27V. Which C1and D3 value need to be fine tuned to optimize

design for different coils and power suppliers.

24V Brush-Less DC Fan

AH287 Rev. 10

DS31042

1 of 11

www.diodes.com

APRIL 2010

12 3 4 5 6 7...11

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