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* Primary Side Control for Eliminating Opto-coupler Secondary CV/CC Control Circuitry Built-in NPN Transistor with 700.

include charger, adapter for ADSL, home appliance power supply, LED lighting power supply and PC auxiliary power supplie.

The AP3988/89/90 is a performance enhanced power switcher for power supplies with better conversion efficiency, better voltage & current accuracy, and improved protection functions. Typical applications include charger, adapter for ADSL, home applian.

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