Diodes AH286 Uživatelský manuál stáhnout pdf

AH286

HALL-EFFECT SMART FAN MOTOR CONTROLLER

AH286

Document number: DS31030 Rev. 12 - 2

1 of 9

www.diodes.com

June 2010

Description

The AH286 is a single-chip solution for driving two-coil

brushless direct current (BLDC) fans and motors. The device

includes a Hall-effect sensor, dynamic offset correction and

two complementary open-drain output drivers with internal

Zener diode protection.

To help protect the motor coils, the AH286 provides Rotor

Lock Protection which shuts down output drives if rotor lock is

detected. The device automatically re-starts when the rotor

lock is removed. A Rotor-lock Detect (RD) output flag allows

external monitoring of any motor locks.

The AH286 is available in SOT89-5L package.

Features

• Single-chip solution

• Operating Voltage: 3.8V to 20V

• Built-in Hall sensor and input amplifier

• Rotor-lock Detect (RD) flag

• Rotor Lock Protection (Lock detection, output shutdown

and automatic re-start)

• Built-in Zener protection for output driver

• Average output current up to 500mA

• Packaged in SOT89-5L

• Green Molding Compound

Pin Assignments

3 7

DOBDO

GND

Vdd

SOT89-5L

286

(Top View)

Applications

• Two-coil BLDC cooling fans

• Low to medium voltage, low power BLDC motors

Typical Application Circuit

286

Vdd

(12V)

Coil2

Coil1

5 4

GND

12V DC Brush-Less Fan with RD Output Function

Notes: 1. Typically it is recommended to us a 56 Ohm resistor for R1 and R2 and a 2.2μF E-Cap capacitor for C1, C2 and C3. These values

may need to be optimized depending on the coils used.

To help with IC protection it’s advised to add a Zener diode between Vdd and ground. The Zener diode should be chosen to help

prevent the supply voltage exceeding the maximum rating of the device.

1 2 3 4 5 6 7 8 9

Shrnutí obsahu

AH286HALL-EFFECT SMART FAN MOTOR CONTROLLER AH286 Document number: DS31030 Rev. 12 - 2 1 of 9 www.diodes.com June 2010 © Diodes Incorporated Descr

Strany 2

AH286HALL-EFFECT SMART FAN MOTOR CONTROLLER AH286 Document number: DS31030 Rev. 12 - 2 2 of 9 www.diodes.com June 2010 © Diodes Incorporated Pin D

Strany 3

AH286HALL-EFFECT SMART FAN MOTOR CONTROLLER AH286 Document number: DS31030 Rev. 12 - 2 3 of 9 www.diodes.com June 2010 © Diodes Incorporated Absol

Strany 4 - Magnetic Characteristics (T

AH286HALL-EFFECT SMART FAN MOTOR CONTROLLER AH286 Document number: DS31030 Rev. 12 - 2 4 of 9 www.diodes.com June 2010 © Diodes Incorporated Elect

Strany 5 - ( SOT89-5L )

AH286HALL-EFFECT SMART FAN MOTOR CONTROLLER AH286 Document number: DS31030 Rev. 12 - 2 5 of 9 www.diodes.com June 2010 © Diodes Incorporated Opera

Strany 6 - Power Dissipation Curve

AH286HALL-EFFECT SMART FAN MOTOR CONTROLLER AH286 Document number: DS31030 Rev. 12 - 2 6 of 9 www.diodes.com June 2010 © Diodes Incorporated Perfo

Strany 7 - SOT89-5L

AH286HALL-EFFECT SMART FAN MOTOR CONTROLLER AH286 Document number: DS31030 Rev. 12 - 2 7 of 9 www.diodes.com June 2010 © Diodes Incorporated Order

Strany 8

AH286HALL-EFFECT SMART FAN MOTOR CONTROLLER AH286 Document number: DS31030 Rev. 12 - 2 8 of 9 www.diodes.com June 2010 © Diodes Incorporated Packa

Strany 9

AH286HALL-EFFECT SMART FAN MOTOR CONTROLLER AH286 Document number: DS31030 Rev. 12 - 2 9 of 9 www.diodes.com June 2010 © Diodes Incorporated IMPOR

Komentáře k této Příručce

Žádné komentáře

Diodes AH286 Uživatelský manuál

Procházejte online nebo si stáhněte Uživatelský manuál pro Hardware Diodes AH286. Diodes AH286 User Manual [en] Uživatelská příručka

Shrnutí obsahu

Komentáře k této Příručce

Související produkty a manuály pro Hardware Diodes AH286