器件名称: LP3303
功能描述: High Performance, Constant Current Switching Regulator For 9PCS White LED
文件大小: 375.82KB 共7页
简 介:Preliminary Datasheet No Schttoy,
LP3303
High Performance, Constant Current Switching Regulator For 9PCS White LED General Description
The LP3303 is a 1.0MHz PWM boost switching regulator designed for constant- current white LED driver applications. The LP3303 can drive a string of up to 8 white LEDs from a 3.6V in series, ensuring uniform brightness and eliminating several ballast resistors. The LP3303 implements a constant frequency 1.0MHz 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, which reduces the power dissipation in the current setting resistor. Highly integration and internal compensation network minimizes as 3 external component counts. Optimized operation frequency can meet the requirement of small LC filters value and low operation current with high efficiency.
Features
High Efficiency: 86% 1.2MHzFixed-Frequency PWM Operation Maximum Output Voltage up to 28V Operating Range : 2.7V to 16V Shutdown Supply Current:<1uA Available in SOT23-6 Package Built-in Over Voltage Protection Minimize the External Component RoHS Compliant and 100% Lead (Pb)-Free
Applications
WLED Blacklight driver OLED Blacklight driver PDA DSC Camera Flash WLED driver
Ordering Information
LP3303
F: Pb-Free
Typical Application Circuit
VIN 22uH 1 1uF 6 1uF 5
VIN
LP3303 CTRL GND 4 FB 3
B6:SOT23-6
Pin Configurations
2
SW
OUT
Rset 10R
Marking information……
