AN8021NS controller equivalent, external excitation flyback ac-dc switching power supply controller.
* Supports operation at switching frequencies up to 700 kHz and achieves a 35 ns output rise time and a 25 ns output fall time.
* Extremely low pre-startup curren.
* Switching power supplies
s Block Diagram
2 V CC
TIM/OVP 3 OVP Start/Stop VREF 4.2 V OSC OCL FB PWM Drive
CT RT
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