AH292

LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR

CONTROLLER

AH292 Rev. 3

4 of 7

JANUARY 2007

www.diodes.com

Electrical Characteristics

°C, V

Characteristics

Symbol

Conditions

Min.

Typ.

Max.

Unit

Supply Voltage

Operating

1.8*

-

5.75

V

Supply current

Operating

-

2.6

4.0

mA

Locked Protection On

-

0.4

-

Sec

Locked Protection Off

2.4

3

3.6

Sec

-

300

-

Output saturation voltage

)

( SAT

OUT

V

-

600

-

mV

Output On Resistance

-

1.75

-

ohm

FG output Vds

-

0.5

-

V

Output Zener-breakdown Voltage

-

15

-

V

*Note:

The output of IC will be switched after the supply voltage is over 1.8V, but the magnetic characteristics won't be normal until the supply is

over 2.0V.

Truth Table

IN-

IN+

CT

OUT1

OUT2

FG

Mode

H

L

L

H

L

H

Rotating

L

H

L

L

H

L

Rotating

-

-

H

off

off

-

Lockup protection activated

Magnetic Characteristics

°C, V

( 1mT = 10 Gauss )

Characteristics

Symbol

Min.

Typ.

Max.

Unit

Operation Point

Bop

--

30

60

Gauss

Release Point

Brp

-60

-30

--

Gauss

Hysteresis

Bhy

--

60

--

Gauss