AH293

LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR

CONTROLLER

AH293 Rev. 2

4 of 7

JANUARY 2007

www.diodes.com

Absolute Maximum Ratings

°C )

Characteristics

Symbol

Rating

Unit

Operating Supply Voltage

8

V

400

Output Current

700

mA

Power Dissipaton

800

mW

Operating Temperature

-20 ~ 100

°C

Storage Temperature

-55 ~ 150

°C

Maximum Junction Temperature

Tj

150

°C

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

RD 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

RD

Mode

H

L

L

H

L

L

Rotating

L

H

L

L

H

L

Rotating

-

-

H

off

off

off

Lockup protection activated

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