LP3322-LED Driver

产品型号 输入电压(V) 功能 驱动个数(pcs) 开关电流(mA) 开关频率(Hz) 反馈电压(mV) 应用 特征 封装 规格书
LP3322 2.7-6.0 Boost 10 1200 1.2M 300 Backlight OVP,SS,OTP,Constant Current,Low Size SOT23-6


High Performance, Constant Current Switching
Regulator For 10PCS White LED In Series




General Description

The LP3322 is a 1MHz PWM boost switching regulator designed for constant- current white LED driver applications. The LP3322 can drive a string of up to 10 white LEDs in series or 3S9P LEDs from 3.6V, ensuring uniform brightness and eliminating several ballast resistors. The LP3322 implements a constant frequency 1MHz PWM control scheme. The high frequency PWM operation also saves board space by reducing external component sizes. To improve efficiency, the feedback voltage is set to 200mV/300mV, which reduces the power dissipation in the current setting resistor. Highly integration and internal compensation network minimizes as 5 external component counts. Optimized operation frequency can meet the requirement of small LC filters value and low operation current with high efficiency.
 


Applications

 WLED Backlight driver
 OLED Backlight driver
 PDA
 MID/PTV

 


Features
 

 High Efficiency: 88%
 1MHzFixed-Frequency PWM Operation
 Maximum Output Voltage up to 36V
 Operating Range : 2.7V to 6V
 Shutdown Supply Current:<1uA
 Available in SOT23-6&TSOT23-6 Package
 Built-in 36V Over Voltage Protection
 Minimize the External Component
 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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