AP438 Datasheet, PDF (1/8 Pages) Anachip Corp – PWM Fan Speed Controller

PWM Fan Speed Controller
„ Features
- Built-in 30Khz OSC provide 0%~100% PWM
output
- Over Temperature Protector(OTP) flag.
(AP439 only).
- Open collect output(OTP & PWM pins).
- SIP-4L package for AP438.
- SIP-5L, SOP-8L package for AP439.
„ Applications
- PC Power.
- DC Fan
„ Pin Assignment
Front View
AP438
SIP-4L
OTP 1
8 ^GND
VCC 2
7 GND
AP439
VIN ³
6 GND
PWM 4
5 _GND
AP439
SOP-8L
SIP-5L
AP438/9
„ General Descriptions
The AP438/9 series’s PWM output has built-in NPN
power transistor that controls the Fan current & Fan
speed. AP439 built-in over temperature alarm
flag.
„ Pin Descriptions
Name
V_CC
VIN
OTP
PWM
GND
Description
Operating voltage input
Reference input voltage
Over Temperature protect flag.
PWM Open Collect Output.
Ground
„ Ordering Information
AP43 X X X X
Part Number
8 : AP438
9 : AP439
Package
Lead Free
P : SIP-4/5L Blank : Normal
S : SOP-8L L : Lead Free Package
Packing
Blank : Tube
or bulk
A : Taping
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev.0.5 Feb.12, 2004
1/8