AP3765 BCDSEMI | Alldatasheet

Document overview

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Technical content

Features

  • Primary Side Control for Rectangular Constant Current and Constant V oltage 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

Figure 2. Pin Configuration of AP3765 (Top View)

1 OUT This pin drives the base of external power NPN switch

3 VCC Supply voltage

4 CS The primary current sense

6 FB The voltage feedback from the auxiliary winding

Figure 3. Functional Block Diagram of AP3765

LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER AP3765 Preliminary Datasheet BCD Semiconductor Manufacturing LimitedFeb. 2010 Rev. 1. 0 Parameter Value Unit Supply V oltage VCC -0.3 to 36 V V oltage at CS, OUT to GND -0.3 to 7 V FB Input -40 to 10 V Output Current at OUT Internally limited A Operating Junction Temperature 150 oC Storage Temperature -65 to 150 oC Lead Temperature (Soldering, 10s) 300 oC Thermal Resistance Junction-to-Ambient 250 oC/W ESD (Machine Model) 200 V ESD (Human Body Model) 2000 V Note 1: Stresses greater than those li sted under "Absolute Maximum Ratings" may cause permanen t damage to the device. These are stress ratings only, and functiona l operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absol ute Maximum Ratings" for extended periods may affect device reliability. Absolute Maximum Ratings (Note 1) BCD Semiconductor's products, as designated with "G1" suffix in the part number, are RoHS compliant and Green.

Ordering Information

TR: Tape and ReelPackage G1: Green Package Temperature Range Part Number Marking ID Packing Type SOT-23-6 -40 to 85oC AP3765K6TR-G1 GBB Tape & Reel K6: SOT-23-6

LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER AP3765 BCD Semiconductor Manufacturing LimitedFeb. 2010 Rev. 1. 0 Preliminary Datasheet Parameter Symbol Conditions Min Typ Max Unit UVLO SECTION Start-up Threshold VTH (ST) 16 18.5 21 V Minimal Operating V oltage V OPR(min) 7.2 9 10.2 V STANDBY CURRENT SECTION Start-up Current IST VCC = VTH (ST)-0.5V , Before start-up 0.6 µA Operating Current I CC(OPR) Static 200 320 µA DRIVE OUTPUT SECTION OUT Maximum Current Sink IOUT 50 mA Source 24 30 36 CURRENT SENSE SECTION Current Sense Threshold VCS 455 510 545 mV Pre-Current Sense VCS(PRE) 365 410 455 mV Leading Edge Blanking 750 ns FEEDBACK INPUT SECTION Feedback Pin Input Leakage Current IFB VFB=4V 2.0 2.5 3.1 µA Feedback Threshold VFB 3.89 3.95 4.01 V (VCC=15V , TA=25oC, unless otherwise specified.)

Electrical Characteristics

Figure 8. 5V/700mA Output for Battery Charger of Mobile Phone

LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER AP3765 Preliminary Datasheet BCD Semiconductor Manufacturing LimitedFeb. 2010 Rev. 1. 0 Mechanical Dimensions Unit: mm(inch)SOT-23-6 2.820(0.111) 3.020(0.119) 2.650(0.104) 2.950(0.116) 1.500(0.059) 1.700(0.067) 0.950(0.037)TYP 1.800(0.071) 2.000(0.079) 0.300(0.012) 0.400(0.016) 0.700(0.028)REF 0.100(0.004) 0.200(0.008) 0.200(0.008) 0.300(0.012) 0.600(0.024) 0.000(0.000) 0.100(0.004) 0.900(0.035) 1.300(0.051) 1.450(0.057) MAX 123 456 Pin 1 Dot by Marking

BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi- cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. - Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Limited 800, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 BCD Semiconductor Manufacturing Limited MAIN SITE REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office 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 Taiwan Office BCD Semiconductor (Taiwan) Company Limited 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656 2808 Fax: +886-2-2656 2806 USA Office BCD Semiconductor Corporation 30920 Huntwood Ave. Hayward, CA 94544, U.S.A Tel : +1-510-324-2988 Fax: +1-510-324-2788 - IC Design Group Advanced Analog Circuits (Shanghai) Corporation 8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com BCD Semiconductor Manufacturing Limited IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi- cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. - Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.

800 Yi Shan Road, Shanghai 200233, China

Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 MAIN SITE REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd., Shenzhen Office Unit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan District, Shenzhen, China Tel: +86-755-8826 7951 Fax: +86-755-8826 7865 Taiwan Office BCD Semiconductor (Taiwan) Company Limited 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656 2808 Fax: +886-2-2656 2806 USA Office BCD Semiconductor Corp. 30920 Huntwood Ave. Hayward, CA 94544, USA Tel : +1-510-324-2988 Fax: +1-510-324-2788 - Headquarters BCD Semiconductor Manufacturing Limited No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial Park, 200241, China Tel: +86-21-24162266, Fax: +86-21-24162277