AH285-YL-13 Diodes Inc, AH285-YL-13 Datasheet

AH285-YL-13

Manufacturer Part Number

AH285-YL-13

Description

IC HALL FAN CTRLR 500MA SOT89-5L

Manufacturer

Diodes Inc

Datasheet

1.AH285-PL-B.pdf (9 pages)

Specifications of AH285-YL-13

Applications

Fan Controller, Brushless (BLDC)

Number Of Outputs

Current - Output

500mA

Voltage - Supply

3.8 V ~ 20 V

Operating Temperature

-40°C ~ 100°C

Mounting Type

Surface Mount

Package / Case

SOT-89-5

Operational Type

Hall Effect Smart Fan Motor Controllers

Operating Supply Voltage

3.8 V to 20 V

Current Rating

2 mA

Operating Point Min/max

10 G to 60 G

Maximum Operating Temperature

+ 100 C

Minimum Operating Temperature

- 40 C

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Voltage - Load

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

AH285-YLDITR

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

H&T Electronics

Part Number:

AH285-YL-13

Quantity:

Current page: 1 of 9
Download datasheet (100Kb)

The AH285 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 AH285 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 Tachometer output is provided by open-drain Frequency

Generator (FG) Pin which allows external interface to monitor

motor rotation or speed. The FG output is the magnetic

change frequency.

The AH285 is available in SOT89-5L package.

Features

Notes:

Description

•

Typical Application Circuit

AH285

Document number: DS31029 Rev. 8 - 2

Single-chip solution

Operating Voltage: 3.8V to 20V

Built-in Hall sensor and input amplifier

Tachometer (FG) output

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

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

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.

may need to be optimized depending on the coils used.

Vdd (12V)

12V DC Brush-less Fan with FG output function

HALL-EFFECT SMART FAN MOTOR CONTROLLER

www.diodes.com

1 of 9

Pin Assignments

Applications

•

285

GND

Two-coil BLDC cooling fans

Low to medium voltage, low power BLDC motors

GND

Vdd

Coil2

(Top View)

SOT89-5L

285

Coil1

7 4

DOB

AH285

June 2010

Related parts for AH285-YL-13

AH285-YL-13 Summary of contents

Page 1

... 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 AH285 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 ...

Page 2

... Output Pin DOB Output Pin GND Ground Functional Block Diagram Vdd Regulator Hall Plate Amp. AH285 Document number: DS31029 Rev HALL-EFFECT SMART FAN MOTOR CONTROLLER Lock detect, shutdown and automatic re-start Control Logic GND www.diodes.com AH285 DO DOB June 2010 © Diodes Incorporated ...

Page 3

... Document number: DS31029 Rev HALL-EFFECT SMART FAN MOTOR CONTROLLER (T = 25°C) A Characteristics I O (AVE (PEAK θ JA θ JC Conditions Operating Operating www.diodes.com AH285 Rating Unit 24 V 500 mA 700 mA 800 mW °C -55 ~ 150 °C 150 °C/W 156 Tc will almost be the same as θ Min Max Unit 3 ...

Page 4

... OUT I = 300mA 500mA 300mA 10mA O OUT1 OUT2 off off - = 25 °C, Vdd = 12V, unless otherwise specified, Note 3) A Min 10 - www.diodes.com AH285 Min Typ. Max Unit - μA - < 0.1 10 0.4 0.5 0.6 Sec 2.4 3 3.6 Sec - 375 500 mV - 625 900 - 1.25 1.67 ohm - 0.5 ...

Page 5

... Operating Characteristics DOB Brp 0 Magnetic Flux Density in Gauss AH285 Document number: DS31029 Rev HALL-EFFECT SMART FAN MOTOR CONTROLLER OFF OFF OP RP Vsat Vsat Bop Magnetic Flux Density in Gauss S Marking side N ( SOT89- www.diodes.com AH285 Brp 0 Bop June 2010 © Diodes Incorporated ...

Page 6

... Document number: DS31029 Rev HALL-EFFECT SMART FAN MOTOR CONTROLLER 576 512 480 448 115 120 125 130 224 192 160 128 Power Dissipation Curve www.diodes.com AH285 100 416 384 352 320 135 140 145 150 (°C) A June 2010 © Diodes Incorporated ...

Page 7

... View Year : 0 Week : A~Z : 1~26 week; a~z : 27~52 week; 285 represents 52 and 53 week X : Internal code A~Z : Green 2 3 SOT89- www.diodes.com AH285 Packing 13 : Tape & Reel 13” Tape and Reel Part Number Quantity Suffix 2500/Tape & Reel -13 June 2010 © Diodes Incorporated ...

Page 8

... Package Outline Dimensions Sensor Location AH285 Document number: DS31029 Rev HALL-EFFECT SMART FAN MOTOR CONTROLLER (All Dimensions in mm www.diodes.com AH285 June 2010 © Diodes Incorporated ...

Page 9

... Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2010, Diodes Incorporated www.diodes.com AH285 Document number: DS31029 Rev HALL-EFFECT SMART FAN MOTOR CONTROLLER IMPORTANT NOTICE LIFE SUPPORT www.diodes.com AH285 June 2010 © Diodes Incorporated ...

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