AH289_10 datasheet(5/9 Pages) DIODES

Part #	AH289

Description	HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR

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Manufacturer	DIODES [Diodes Incorporated]

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AH289

HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR

CONTROLLER

AH289 Rev. 11

5 of 9

APRIL 2010

DS31052

www.diodes.com

Electrical Characteristics

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

Symbol

Parameter

Conditions

Min

Typ.

Max

Unit

Idd

Supply Current

Operating

-

2.0

4.0

mA

IOFF

Output Leakage Current

VOUT = 24V

-

< 0.1

10

μA

TLRP-ON

Locked Protection On

0.4

0.46

0.6

Sec

TLRP-OFF

Locked Protection Off

2.4

2.76

3.6

Sec

VOUT(SAT)

Output Saturation Voltage

IO = 200mA

-

450

700

mV

IO = 300mA

-

680

800

RDS(ON)

Output On Resistance

IO = 200mA

-

2.25

3.5

ohm

VOL

RD Output Vds

IO = 10mA

-

0.3

0.5

V

Vz

Output Zener-Breakdown Voltage

42

55

65

V

Truth Table (Note 7)

IN-

IN+

CT

OUT1

OUT2

RD

Mode

H

L

H

L

Rotating

L

H

L

H

L

Rotating

-

H

off

H

Lockup protection activated

Notes:

7. Latch-type RD output is low during rotation and high during stop.

Magnetic Characteristics

(TA = 25 °C, Vdd = 24V, unless otherwise specified, Note 8)

(1mT = 10 Gauss)

Symbol

Characteristics

Min

Typ.

Max

Unit

Bop

Operation Point

10

30

60

Gauss

Brp

Release Point

-60

-30

-10

Gauss

Bhy

Hysteresis

--

60

--

Gauss

Notes:

8. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering.

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