AP438 controller equivalent, pwm fan speed controller.
- 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. -.
- PC Power. - DC Fan
* Pin Assignment
Front View AP438
* Pin Descriptions
Name VCC VIN OTP PWM GND Description.
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.
* Applications
- PC Power. - DC Fan
* Pin Assignment
Front View AP438
* Pin Descr.
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