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AH291-PG-13

LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER

Diodes Incorporated. 

AH291

LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR

CONTROLLER

Absolute Maximum Ratings (TA = 25°C)

Symbol

Vdd

IO

PD

TST

TJ

Characteristics

Operating Supply Voltage

Output Current

IO(AVE)

SIP-4L

SOT89-5L

Power Dissipation

Storage Temperature

IO(PEAK)

SIP-4L

SOT89-5L

Maximum Junction Temperature

Rating

8

400

400

700

550

800

-55 ~ 150

150

Unit

V

mA

mA

mA

mW

mW

°C

°C

Recommended Operating Conditions

Symbol

Characteristic

Conditions

Min

Max

Unit

Vdd

Supply Voltage (Note 2)

Operating

1.8

5.75

V

TA

Operating Ambient Temperature

Operating

-20

100

°C

Notes: 2. 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.

Electrical Characteristics (TA = 25 °C, Vdd = 5V, unless otherwise specified)

Symbol

Idd

TRLP-ON

TRLP-OFF

VOUT(SAT )

RDS(ON)

Vz

Characteristics

Supply Current

Rotor Lock Protection On Time

Rotor Lock Protection Off Time

Output Saturation Voltage

Output On Resistance

Output Zener-Breakdown Voltage

Conditions Min

Operating

-

-

2.4

IO = 180mA

-

IO = 350mA

-

-

-

Typ. Max Unit

2.6

4.0

mA

0.4

-

Sec

3

3.6

Sec

300

-

mV

600

-

mV

1.75

-

ohm

15

-

V

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

AH291

Document number: DS31041 Rev. 8 - 2

3 of 9

www.diodes.com

June 2010

© Diodes Incorporated

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