LP3368-Charge Pump

产品型号 输入电压(V) 输出电压(V) 开关频率(Hz) 输出电流 明亮模式 特征 封装 规格书
LP3368 2.7-5.5 CP+CS 2000K 1000+1000 2-level Not inductors,SS,OTP,OCP TQFN-10


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.
 

Applications
 

White/Yellow LED Torch/Flash for mobile phone
Generic lighting/Flash/Strobe Applications
PDA/DSC/Camcorder
MID/GPS Applications

 

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
 

Marking Information
 

Please see specification. 
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We will send a copy to you as fast as we can.
 










 

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