DIO5151

DIO5151 700mA/1A Buck/Boost Charge Pump LED Driver Rev 1.3 Features Output Current : DIO5151ED8: 700mA DIO5151CD10: 1A Up to 90% Efficiency in Torch Mode Adjustable FLASH Mode Current 1× and 2× Automatic Modes for High Efficiency Input Voltage Range: 3V to 5.5V Minimum External Components: No Inductors High Frequency Operation: 2MHz Low 47mV Reference for Low Loss Sensing IQ < 1µA in Shutdown Built-In Soft Start Limits Inrush Current Low Input and Output Ripple and Low EMI Output Over Voltage Protection Output Open and Output Short Protection Over-current and Over-temperature Protection Package: DFN2*2.2-8, DFN3*3-10 Applications Cellular Telephones Digital Still Cameras Mobile Internet Device USB Bus-Powered Chargers Block Diagram VIN 3-5.5V 4.7µF VIN C1 1µF C2 VOUT 1µF W hite LED DIO5151 FLASH TORCH/FLASH ENABLE EN GND FB RSET 86.6K 0.22 Descriptions The DIO5151 is a current-regulated charge pump ideal for powering high brightness LEDs for camera flash applicati...