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LP3368 Arkusz danych(PDF) 1 Page - Lowpower Semiconductor inc |
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LP3368 Arkusz danych(HTML) 1 Page - Lowpower Semiconductor inc |
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1 / 8 page  LP3368-02 May. -2014 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 1 of 8 Preliminary Datasheet LP3368 Dual Channel Charge Pump LED Driver General Description The LP3368 charge pump LED driver is designed for powering dual channel high brightness LEDs for camera flash applications. The LP3368 automatically switches modes between step-up and step-down ensuring that LED current does not depend on the forward voltage. The LP3368 provides two current levels for TORCH and FLASH modes in each channel. In TORCH 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 LP3368 is available in a 16-lead 4mm*4mm TQFN-16 package and is rated over the -40°C to 85°C temperature range. Order Information LP3368 □ □ □ F: Pb-Free Package Type QV: TQFN-16 Typical Application Circuit Features Input Voltage Range: 2.7V to 5.5V Adjustable FLASH Mode Current Output Current up to 1A in Each Channel Up to 95% Efficiency in Charge Pump Mode Automatic Step up/down Mode Switchover Minimum External Components: No Inductors <1uA Shutdown 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 4mm×4mm TQFN-16 Package RohS Compliant and 100% Lead (Pb)-Free Applications White/Yellow LED Torch/Flash for mobile phone Generic lighting/Flash/Strobe Applications PDA/DSC/Camcorder MID/GPS Applications Marking information Device Marking Package Shipping LP3368 LPS LP3368 YWX TQFN-16 3K/REEL Y:Production year W:Production week X:Production batch ON OFF LP3368 MODE2 FB1 OUT2 EN1 C22 VIN1 VIN2 FB2 OUT1 C21 C12 C11 MODE1 RSET1 EN2 RSET2 GND VIN CIN Rsense1 Rset1 C1 C2 Rsense2 Rset2 FLASH TORCH Cout1 Cout2 LED1 LED2 |
Podobny numer części - LP3368 |
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Podobny opis - LP3368 |
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