Datasheet > AH293_10

AH293_10

更新时间： 2024-11-21 08:22:31

品牌	Logo	应用领域
美台 - DIODES		风扇电机
页数	文件大小	规格书
8页	67K
描述
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR

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中文翻译

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AH293_10 数据手册

AH293

LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR

CONTROLLER

Description

Pin Assignments

AH293 is a monolithic fan motor controller with Hall sensor’s

capability. It contains two complementary open-collector

transistors for Motor’s coil driving, automatic lock current

shutdown, and recovery protections. Also, rotor-state

detection (RD) output is for speed detection.

(Top View)

Vdd

293

GND

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.

DO 3

DOB

SOT89-5L

The AH293 is available in SOT89-5L package.

Features

Applications

•

Two-coil BLDC cooling fans

Low to medium voltage, low power BLDC motors

•

On Chip Hall Sensor

Rotor-Locked Shutdown

Automatically Restart

Rotor-State Detection (RD) Output

Built-in Zener Protection for Output Driver

Operating Voltage: 1.8V~5.75 V

Output Current: I_O(AVE)= 400 mA

Packaged in SOT89-5L

Green Molding Compound

Typical Application Circuit (Note 1)

V_dd

(1.8V/5.75V)

293

Coil2

Coil1

GND

(alarm)

Notes: 1. R1, R2: typical 56 Ohm

C1, C2, C3: typical 2.2µF

The R, C value need to be fine tuned based

on coils design.

1.8V/5.75V DC Brush-Less Fan with RD Output Function

1 of 8

www.diodes.com

June 2010

AH293

Document number: DS31048 Rev. 6 - 2

12 3 4 5 6 7 8

中文翻译

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