AH5792 데이터 시트보기 (PDF) - Diodes Incorporated.

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AH5792

SINGLE PHASE HALL EFFECT LATCH SMART FAN MOTOR CONTROLLER

Diodes Incorporated. 

Typical Application Circuit (Note 1)

SYSTEM

POWER

Vdd

D1

C1 Dz

V SS

AH5792

SINGLE PHASE HALL EFFECT LATCH SMART

FAN MOTOR CONTROLLER

AH5792

SYSTEM

POWER

10Kohm

FG

FG

O1

O2

Notes:

1. Reverse connection of power supply may break the device. A countermeasure is needed such as using reverse power protection

diode D1 between power supply and Vdd terminal. In such case of using reverse power protection diode D1 because of there is no

way to return current to power supply, please take necessary measures like below.

- Connect Dz (Zener diode) between Vdd and Vss terminal, not to exceed the absolute maximum rating voltage.

- Connect a capacitor C1 between Vdd and Vss terminal, to make the path of return current to power supply.

The AH5792 has an open-drain tachometer FG output that follows the half (1/2) the magnetic change frequency. A pull-up resistor

(10Kohm, typically for System Power = 5V) connected to a supply voltage.

Pin Descriptions (Note 2)

Pin Name

Description

O1

Output driving & sinking pin 1

Vdd

Power supply pin

Vss

Ground pin

FG

Frequency Generator (Note 2)

O2

Output driving & sinking Pin 2

NC

No Connection

Notes: 2. The FG is half (1/2) the magnetic change frequency.

AH5792

Document number: DS314641 Rev. 6 - 2

2 of 10

www.diodes.com

July 2010

© Diodes Incorporated

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