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AP3765 Datasheet(PDF) 1 Page - BCD Semiconductor Manufacturing Limited |
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AP3765 Datasheet(HTML) 1 Page - BCD Semiconductor Manufacturing Limited |
1 / 9 page LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER AP3765 Preliminary Datasheet 1 BCD Semiconductor Manufacturing Limited Feb. 2010 Rev. 1. 0 General Description The AP3765 is a high performance AC/DC power sup- ply controller for battery charger and adapter applica- tions. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies. The AP3765 provides accurate constant voltage, con- stant current (CV/CC) regulation while removing the opto-coupler and secondary control circuitry. It also eliminates the need of loop compensation circuitry while maintaining stability. The AP3765 achieves excellent regulation and high average efficiency, yet meets the requirement for no-load consumption less than 30mW. The AP3765 is available in SOT-23-6 package. Features · Primary Side Control for Rectangular Constant Current and Constant Voltage Output · Sub-microampere Start-up Current · 30mW No-load Input Power Feasible · Tight CV Regulation Performance · Eliminates Opto-coupler and Secondary CV/CC Control Circuitry · Eliminates Control Loop Compensation Circuitry · Flyback Topology in DCM Operation · Random Frequency Modulation to Reduce System EMI · Built-in Soft Start · Open Feedback Protection · Short Circuit Protection · SOT-23-6 Package Applications · Adapters/Chargers for Cell/Cordless Phones, PDAs, MP3 and Other Portable Apparatus · LED Drivers · Standby and Auxiliary Power Supplies Figure 1. Package Type of AP3765 SOT-23-6 |
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