AP3019 BCDSEMI | Alldatasheet

Document overview

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Technical content

Features

  • Inherently Uniform LED Current
  • High Efficiency up to 84%
  • No Need for Extra Schottky Diode
  • Over Output V oltage Protection
  • Drives 2 to 5 LEDs
  • Fast 1.0MHz Switching Frequency
  • Uses Tiny 1mm Tall Inductor
  • Requires Only 0.22µF Output Capacitor

Applications

  • Cellular Phones
  • Digital Cameras
  • LCD modules
  • GPS Receivers
  • PDAs, Handheld Computers

Figure 1. Package Type of AP3019

Figure 2. Pin Configuration of AP3019 (Top View)

2 GND Ground Pin

WHITE LED STEP-UP CONVERTER AP3019 Preliminary Datasheet Apr. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited Functional Block Diagram Figure 3. Functional Block Diagram of AP3019 BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.

Ordering Information

Σ R S Q

1.0 MHz

1.25 V COMPARATOR OVP 200 mV SOFT START

WHITE LED STEP-UP CONVERTER AP3019 Preliminary Datasheet Apr. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited Parameter Symbol Value Unit Input V oltage V IN 20 V SW V oltage 27 V FB V oltage 20 V CTRL V oltage 20 V Thermal Resistance (Junction to Atmosphere, no Heat sink) R θJA 265 oC/W Operating Junction Temperature 150 oC Storage Temperature Range T STG -65 to 150 oC Lead Temperature (Soldering, 10sec) T LEAD 260 oC ESD (Machine Model) 250 V ESD (Human Body Model) 2000 V Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indi- cated under "Recommended Operating Conditi ons" is not implied. Exposure to "A bsolute Maximum Ratings" for extended periods may affect device reliability. Parameter Symbol Min Max Unit Operating Temperature Range T OP -40 85 oC Input V oltage V IN 2.5 16 V CTRL V oltage V CTRL 16 V Recommended Operating Conditions Absolute Maximum Ratings (Note 1)

WHITE LED STEP-UP CONVERTER AP3019 Preliminary Datasheet Apr. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited (VIN=3V , VCTRL =3V, TA=25oC, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit Minimum Operating V oltage V IN(min) 2.5 V Maximum Operating V oltage V IN(max) 16 Feedback V oltage VFB IOUT=20mA, 4 LEDs, TA=-40oC to 85oC 188 200 212 mV FB Pin Bias Current I FB 35 100 nA Supply Current I CC VFB=VIN, Not Switching 1.3 2.0 2.7 mA Supply Current I Q VCTRL=0V 2.0 3.2 5.0 µA Switching Frequency f 0.7 1.0 1.3 MHz Maximum Duty Cycle D MAX 90 93 % Switch Current Limit (Note 2) ILIMIT TA=25oC, D=40% 500 mA TA=25oC, D=80% 350 Switch VCE Saturation V oltage V CESAT ISW=250mA 360 mV Switch Leakage Current V SW=5V 0.01 5 µA CTRL Pin V oltage VCTRL High 1.8 V Low 0.05 CTRL Pin Bias Current I CTRL 40 55 72 µATA=85oC 50 TA=-40oC 75 Schottky Forward Drop V DROP ID=150mA 0.7 V Schottky Leakage Current VR=23V 0.1 4 µA VR=27V 150 Soft Start Time t 300 µS

Electrical Characteristics

Note 2: The Switch Current Limit is related to Duty Cycle. Please refer to Figure 16 for detail.

Figure 26. Dimming Control

Figure 27. Typical White LED Drivers

WHITE LED STEP-UP CONVERTER AP3019 Preliminary Datasheet Apr. 2007 Rev. 1. 1 BCD Semiconductor Manufacturing Limited Mechanical Dimensions SOT-23-6 Unit: mm(inch) 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) 1.050(0.041) 1.150(0.045) 1.050(0.041) 1.250(0.049) 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