AH287-P(2007) 查看數據表（PDF） - Diodes Incorporated.

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AH287-P
(Rev.:2007)

HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER

Diodes Incorporated. 

AH287

HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR

CONTROLLER

Electrical Characteristics (TA = 25 °C, Vdd =24V, unless otherwise specified)

Characteristics

Symbol

Conditions

Min. Typ. Max. Unit

Supply Voltage

Supply current

Output Leakage Current

Locked Protection On

Locked Protection Off

Output saturation voltage

Output On resistance

Output Zener-breakdown Voltage

Vdd

Icc

Ioff

Tlrp-on

Tlrp-off

VOUT( sat )

Rds(on)

Vz

Operating

Operating

VOUT=24V

IO=200mA

IO=300mA

IO=200mA

3.8

-

28* V

-

2.0 4.0 mA

- < 0.1 10 µA

0.4 0.46 0.6 Sec

2.4 2.76 3.6 Sec

- 450 700

mV

- 680 800

- 2.25 3.5 ohm

42

55

65

V

*Note: Please watch out the current limit issue when the operation voltage is over 26.4V, because of the different efficiency in the coil.

Truth Table

IN-

IN+

H

L

L

H

-

-

CT

OUT1 OUT2

Mode

L

H

L

Rotating

L

L

H

Rotating

H

off

off

Lockup protection activated

Magnetic Characteristics (TA = 25 °C, Vdd = 24V, unless otherwise specified)

Characteristics

Operate Point

Release Point

Hysteresis

Symbol

Bop

Brp

Bhy

Min.

10

-60

--

Typ.

30

-30

60

Max.

60

-10

--

(1mT=10 Gauss)

Unit

Gauss

Gauss

Gauss

AH287 Rev. 4

4 of 10

www.diodes.com

JANUARY 2007

© Diodes Incorporated

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