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LP3367 Datasheet(PDF) 1 Page - Lowpower Semiconductor inc |
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LP3367 Datasheet(HTML) 1 Page - Lowpower Semiconductor inc |
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1 / 10 page  LP3367-02 Feb.-2011 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 1 of 10 Preliminary Datasheet LP3367 1A Buck/Boost Charge Pump LED Driver General Description The LP3367 buck/boost charge pump LED driver is designed for powering high brightness white LEDs for camera flash applications. The LP3367 automatically switches modes between step-up and step-down ensuring that LED current does not depend on the forward voltage. The LP3367 provides two current levels for TORCH and FLASH modes. In TOUCH mode, The LED current sense reference voltage is 50mV. The LED current can be determined by current sense resistor. In FLASH mode, the current sense reference voltage can be adjusted by external resistor. The maximum LED current can be set up to 1A. The LP3367 is available in a 10-lead 3mm*3mm TDFN-10 package and is rated over the -40°C to 85°C temperature range. Order Information LP3367 □ □ □ □ F: Pb-Free Package Type QV: TDFN-10 Output type Default: 500mA A: 1000mA Features Input Voltage Range: 2.7V to 5.5V Adjustable FLASH Mode Current Output Current up to 1A Up to 95% Efficiency in TORCH Mode Automatic Buck/Boost Mode Switchover Minimum External Components: No Inductors <1uA Quiescent Current 2 MHz High Frequency Operation 50mV Reference for Low Loss Sensing PWM Dimming Control Automatic Soft Start Limits Inrush Current Over-Voltage Protection Over-Current protection Thermal Fault Protection Low Ripple and EMI Ultra-Low Dropout Voltage in Buck Mode 1.6 Second Timeout in FLASH Mode 3mm×3mm TDFN-10 Package RohS Compliant and 100% Lead (Pb)-Free Applications WLED Backlight driver OLED Backlight driver PDA MID/PTV Marking information Device Marking Package Shipping LP3367 LPS LP3367 XXXX TDFN-10 3K/REEL Y: Year code. W: Weeks code. X: Series number code. |
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