Datasheet AP3917B (Diodes) - 2

AP3917B Typical Applications Circuit
R1 D2 L1 C3 C2 R2 L2 BP FR S VO+ L FB S R C1 C5 NC D3 C4 R3 Drain NC AP3917B VO - BD1
Pin Descriptions Pin Number Pin Name Function
1, 2 N/C Not Connected. 3,4 S Internal Power MOSFET Source. Ground Reference for BP and FB Pins. 5 BP Connection Point of External Bypass Capacitor for Internally Generated Control Circuit Power Supply. 6 FB Regulator Feedback. 7 Drain Internal Power MOSFET Drain. High-Voltage Current Source Input.
Functional Block Diagram
7 Drain 5 BP Power Driver VREF FB Logic Control CS limit VLIMIT RCS 6 3,4 Protection FB S AP3917B 2 of 12 May 2019 Document number: DS41277 Rev. 5 - 2
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