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AH286-P

Description
HALL-EFFECT SMART FAN MOTOR CONTROLLER
File Size292KB,10 Pages
ManufacturerDiodes
Websitehttp://www.diodes.com/
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AH286-P Overview

HALL-EFFECT SMART FAN MOTOR CONTROLLER

PART OBSOLETE – NO ALTERNATE PART
AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
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 SOT89-5 package.
Pin Assignments
(Top View)
Vdd
OBSOLETE – PART DISCONTINUED
1
2
286
5
RD
GND
DO
3
7
DOB
4
SOT89-5
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 SOT89-5
Green Molding Compound
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Two-Coil BLDC Cooling Fans
Low to Medium Voltage, Low Power BLDC Motors
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AH286
Document number: DS31030 Rev. 13 - 4
1 of 10
www.diodes.com
June 2017
© Diodes Incorporated

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