Datasheet > AH289_10

AH289_10

更新时间： 2022-05-13 01:05:48

品牌	Logo	应用领域
美台 - DIODES		风扇电机高压
页数	文件大小	规格书
9页	116K
描述
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR

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AH289_10 数据手册

AH289

HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR

CONTROLLER

General Description

Features

AH289 is a monolithic fan motor controller with Hall sensor’s

capability. It contains two complementary open-drain transistors

for motors coil driving, an automatic lock current shutdown, and

recovery protection. In addition, the Rotor-State Detection (RD)

output is for Rotor-State Detection.

•

On Chip Hall Sensor

Rotor-Locked Shutdown

Automatically Restart

Rotor-State Detection (RD) Output

Built-in Zener Protection for Output Driver

Operating Voltage: 3.8V~28V

Output Current: I_{O (AVE)}= 400mA

Lead Free Package: SOT89-5L (Note 1)

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.

SOT89-5L: Available in “Green” Molding Compound

(No Br, Sb)

•

Lead Free Finish/ RoHS Compliant (Note 2)

Typical Application Circuit

Vdd

(24V)

R_pu

Coil2

48V

289

Coil1

48V

GND

* Rpu : typical 10 Kohm

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 DC Brush-Less Fan with RD Output Function

AH289 Rev. 11

DS31052

1 of 9

www.diodes.com

APRIL 2010

12 3 4 5 6 7...9

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