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AH284

HALL-EFFECT SMART FAN MOTOR CONTROLLER

Diodes Incorporated. 

NOT RECOMMENDED FOR NEW DESIGN

USE AH2985

Electrical Characteristics (TA = +25°C, VDD = 12V, unless otherwise specified.)

AH284

Symbol

IDD

IOFF

tRLP-ON

tRLP-OFF

VOUT(SAT)

RDS(ON)

VZ

Characteristics

Supply Current

Output Leakage Current

Rotor Lock Protection On Time

Rotor Lock Protection Off Time

Output Saturation Voltage

Output On Resistance

Output Zener-Breakdown Voltage

Truth Table

IN-

IN+

H

L

L

H

-

-

CT

OUT1

L

H

L

L

H

Off

Conditions

Operating

VOUT = 24V

-

-

IO = 300mA

IO = 500mA

IO = 300mA

-

Min

Typ.

Max

Unit

-

2.0

4.0

mA

-

< 0.1

10

μA

0.4

0.5

0.6

Sec

2.4

3

3.6

Sec

-

375

500

mV

-

625

900

-

1.25

1.67



35

42

60

V

OUT2

L

H

Off

Mode

Rotating

Rotating

Lockup protection activated

Magnetic Characteristics (TA = +25°C, VDD = 12V, unless otherwise specified, Note 6)

Symbol

Characteristics

Min

Typ.

Max

Bop

Operation Point

Brp

Release Point

Bhy

Hysteresis

10

30

60

-60

-30

-10

-

60

-

Note: 6. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.

(1mT = 10 Gauss)

Unit

Gauss

Gauss

Gauss

AH284

Document number: DS31051 Rev. 12 - 3

5 of 11

www.diodes.com

June 2017

© Diodes Incorporated

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