LP3390中文资料High Performance, Constant Current Switchingfor White LED and Boost Convertor数据手册LPSemi规格书

描述 Description

The LP3390 is a high frequency, asynchronous boost converter for constant current white LED driver applications. The internal MOSFET can support up to 8 White LEDs for backlighting and OLED power application,and the internal soft start function can reduce the inrush current. The LED current is initially set with the external sense resistor. To improve efficiency, the feedback voltage is set to 200mV, which reduces the power dissipation in the current setting resistor. The LP3390 implements a constant frequency 1.2MHz PWM control scheme. Optimized operation frequency can meet the requirement of small LC filters value .Highly integration and internal compensation network minimizes as component counts.to provide the best solution for PCB space saving and total BOM cost. DFN-10 3*3mm packages.

特性 Features

· High Efficiency: 95%
· 1.2MHzFixed-Frequency PWM Operation
· Maximum Output Voltage up to 30V
· Operating Range : 2.5V to 5.5V
· Shutdown Supply Current:<1uA
· Minimize the External Component.
· RoHS Compliant and 100% Lead (Pb)-Free

应用 Application

· WLED Backlight driver
· Panel Bias Voltage supply