WD3124DB

WD3124DB 1000mA Buck/Boost Charge Pump Flash LED Driver WD3124DB Http//:www.sh-willsemi.com Description The WD3124DB is a current-regulated charge pump ideal for powering high brightness LEDs for camera flash applications. The charge pump can be set to regulate two current levels for FLASH and TORCH modes. The WD3124DB automatically switches modes between step-up and step-down ensuring that LED current does not depend on the forward voltage. It switches at 2.2MHz, allowing the use of tiny components. The supply voltage ranges from 2.7V to 5.5V and is ideally suited for all applications powered by a single LI-Ion battery cell or three to four NiCd, NiMH, or Alkaline battery cells. The WD3124DB also features a very low shutdown current, an automatic soft-start mode to limit inrush current, as well as over current, over voltage and over-Thermal shutdown control. A low current sense reference voltage (50mV) allows the use of small 0603 current sensing resistors. The WD3124DB is available in Green DFN3×3-10L package and is specified over an ambient temperature range of -40℃ to +85℃. DFN3x3-10L VIN 1 C1 2 C2 3 FLASH 4 EN 5 GND 10 VOUT 9 PGND 8 SGND 7 FB 6 RSET Pin configuration (Top view) WD3124DB 3124DB = Device code Y = Year code W = Week code Marking Features ● Output Current up to 1000mA ● Up to 95% Efficiency in Torch Mode ● Adjustable FLASH Mode Current ● Automatic Buck/Boost Mode Switchover ● Wide Input Voltage Range: 2.7V to 5.5V ● Minimum External Components: ...