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Product Brief PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS Description The AP3706 is a high performance AC/DC power supply controller for battery charger and adapter applications. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies. The AP3706 provides constant voltage, constant current (CV/CC) regulation without requiring an opto-coupler and secondary control circuitry. It also eliminates the need of loop compensation circuitry while maintaining stability. The AP3706 achieves excellent regulation and high power efficiency, the no-load power consumption is less than 200mW at 265VAC input. AP3706 Parametric Table Startup Current (A)(Typ) UVLO Threshold on/off (V) (Typ) Operating Current (A) (Typ) Standby Power (W) 70 18.5/7.4 680 <0.3 SOIC-8 Package Applications * * Adapters/Chargers for Cell/Cordless Phones, PDAs, MP3 and Other Portable Apparatus Standby and Auxiliary Power Supplies Features * * * * * * * * * * Primary Side Control for Rectangular Constant Current and Constant Voltage Output 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 Valley Turn on of External Power NPN Transistor Built-in Soft Start Open Circuit Protection Over Voltage Protection Short Circuit Protection Benefits * * High Power Efficiency for Battery Chargers Low Total Cost Additional Available Materials * * * * * Samples Preliminary Datasheet ESD Report Demo Board Application Note Mar. 2008 BCD Semiconductor Manufacturing Limited Product Brief PRIMARY SIDE CONTROL IC FOR OFF-LINE BATTERY CHARGERS Pin Configuration AP3706 M Package CS VCC OUT GND 1 2 3 4 8 7 6 5 COMP BIAS VDD FB Ordering Information Example Package SOIC-8 Temperature Range -40 to 85oC Part Number AP3706M-E1 AP3706MTR-E1 Marking ID 3706M-E1 3706M-E1 Packing Type Tube Tape & Reel Detailed information please refer to the relevant datasheet. Sales Office: Shanghai No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, China Tel : 86-21-24162266 Fax : 86-21-24162277 Taiwan 4F, 298-1 Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel : 886-2-2656-2808 Fax : 886-2-2656-2806 USA 30920 Huntwood Ave. Hayward, CA 94544, USA Tel : +1-510-324-2988 Fax : +1-510-324-2788 Shenzhen Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China Tel : 86-755-8826 7951 Fax : 86-755-8826 7865 Mar. 2008 BCD Semiconductor Manufacturing Limited |
Price & Availability of AP3706
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