APX9359A datasheet(8/15 Pages) ANPEC

8 / 15 page

Rev. A.2 - Jan., 2018

www.anpec.com.tw

APX9359A

Function Description (Cont.)

SEL Control

The APX9359A support FG, 1/2FG or RD Output.

SEL Pin Input Voltage

RSEL1/RSEL2

SO Output

Speed Control

GND

Open/GND

VSP

0.2(V) ~ 0.4*VCC(V)

30K

Ω/10KΩ

PWM

0.4*VCC(V) ~0.8*VCC(V)

10K

Ω/15KΩ

1/2FG

PWM

VCC

VCC/ Open

PWM

Lock Protection and Automatic Restart

The APX9359A provides the lock protection and automatic restart functions to prevent the coil burnout while the fan is

locked. As the fan is locked, the IC will come into start-up operation for 0.75 second. Then, the IC will switch to lock

protection mode to turn off output driver for 5 seconds. After lock protection mode, the IC switches to start-up operation

again. If the locked condition still remains, the lock-and-restart process will be recurred until the locked condition is

released.

Thermal Protection

The APX9359A has thermal protection. When internal junction temperature reaches 165oC, the output devices will be

switched off. When the IC

’s junction temperature cools down 30oC, the thermal sensor will turn on the output devices

again, resulting in a pulsed output during continuous thermal protection.

SO Output

The SO pin is an open-drain output, connecting a pull up resistor to a high level voltage for the speed detection

function. During the Lock Mode, the SO will always high (switch off). Open the terminal when not in use.

Table 1: SEL Pin Definition

APX9359A Fiches technique(PDF) 8 Page - Anpec Electronics Coropration