SP6686 SP6686 400mA Buck/Boost Charge Pump LED Driver 400mA Buck/Boost Charge Pump LED Driver January 2020 Rev. 2.0.1 GENERAL DESCRIPTION APPLICATIONS The SP6686 is a current-regulated charge White LED Torch/Flash for Mobile pump ideal for powering high brightness LEDs Phones, DSCs and Camcorders for camera flash applications. Generic Lighting/Flash/Strobe The charge pump can be set to regulate two Applications current levels for FLASH and TORCH modes. White LED Backlighting The SP6686 automatically switches modes between step-up and step-down ensuring that LED current does not depend on the forward FEATURES voltage. A low current sense reference voltage Output Current up to 400mA (50mV) allows the use of small 0603 current sensing resistors. Up to 94% Efficiency in Torch Mode The SP6686 is designed to operate from a Adjustable FLASH Mode single cell lithium-ion battery or fixed 3.3V or x1 and x2 Automatic Modes for High 5.0V power rails and is available in a RoHS Efficiency compliant, green/halogen free space saving 10-pin 3mmx3mm DFN package Minimum External Components: No Inductors 2.4MHz High Frequency Operation 1A Shutdown Current Built-In Soft Start Limit Inrush Current Output Overvoltage Protection Over current/Temperature Protection 10-pin 3mm x 3mm DFN Package TYPICAL APPLICATION DIAGRAM Fig. 1: SP6686 Application Diagram 1/12 Rev. 2.0.1 SP6686 SP6686 440000mmAA BBuucckk//BBoooosstt CChhaarrggee PPuummpp LLEEDD DDrriivveerr ABSOLUTE MAXIMUM RATINGS OPERATING RATINGS These are stress ratings only and functional operation of Input Voltage Range VIN ............................... 2.7V to 5.5V the device at these ratings or any other above those Operating Temperature Range ................... -40C to 85C indicated in the operation sections of the specifications Thermal Resistance JA ....................................57.1C/W below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. VIN, VOUT ................................................... -0.3V to 6.0V Output Current Pulse (FLASH) .............................. 500mA Output Current Continuous (TORCH) ..................... 200mA VEN ................................................................. 0V to 7V Storage Temperature .............................. -65C to 150C Lead Temperature (Soldering, 10 sec) ................... 260C ESD Rating EN pin (HBM - Human Body Model) .......... 1kV ESD Rating All Other Pins (HBM) .............................. 2kV ELECTRICAL SPECIFICATIONS Specifications with standard type are for an Operating Junction Temperature of TJ = 25C only limits applying over the full Operating Junction Temperature range are denoted by a . Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T = 25C, and are provided for J reference purposes only. Unless otherwise indicated, V = V = 3.6V, C = 2.2F, C = 0.47F, C = 1F. T = 40C IN SHTDN IN FC OUT A to 85C. Parameter Min. Typ. Max. Units Conditions Operating Input Voltage 5.5 V 2.7 = 2.7 5.5V FLASH = 0V VIN 0.5 3 I = 100 A LOAD Quiescent Current mA 2 FLASH = VIN, 2x Mode Shutdown Current 1 A VIN = 5.5V, VEN = 0V Oscillator Frequency 2.4 MHz Charge Pump Equivalent 5 V = 0V, V = 3.6V FB IN Resistance (x2 Mode) Charge Pump Equivalent 0.6 0.8 V = 3.6V IN Resistance (x1 Mode) FB Reference Voltage 138 150 162 mV FLASH = V R = 106k IN, SET FB Reference Voltage 50 55 mV FLASH = GND 45 0.5 A FB Pin Current VFB = 0.3V EN, Flash Logic Low 0.4 V EN, Flash Logic High 1.3 V EN, Flash Pin Current 0.5 A V Turn-on Time 250 500 s V = 3.6V, FB within 90% of regulation OUT IN o Thermal Shutdown Temperature 145 C 2/12 Rev. 2.0.1