LP3302
High Performance, Constant Current Switching Regulator For White LED
概述
The LP3307 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 250mV, which reduces the power dissipation in the current setting resistor. The LP3307 implements a constant frequency 1MHz PWM control scheme. Optimized operation frequency can meet the requirement of small LC filters value .Highly integration and internal compensation network minimizes as 5 external component counts.To provide the best solution for PCB space saving and total BOM cost. SOT23-6 packages.
应用
◆ WLED Backlight driver
◆ OLED Backlight driver
◆ PDA
◆ DSC
◆ Camera Flash WLED driver
◆ OLED Backlight driver
◆ PDA
◆ DSC
◆ Camera Flash WLED driver
数据参数
数据参数
输入电压 (V)
2.2~6
最大输出电压(V)
29
工作模式
Boost
LED通道数
1
驱动LED数量(pcs)
3S8P
开关电流(A)
1.1
开关频率 (Hz)
1.1M
FB电压(mV)
250
亮度调节
PWM
过压保护(V)
29
产品特征/功能
OVP,OTP,Constant current,Low size
应用
Backlight
封装
SOT23-6
特征
特征
◆ High Efficiency: 93%
◆ 1.1MHz Fixed-Frequency PWM Operation
◆ Maximum Output Voltage up to 29V
◆ Operating Range : 2.2V to 6V
◆ Shutdown Supply Current:◆ Available in SOT23-6 Package
◆ Built-in Over Voltage Protection
◆ Minimize the External Component
◆ RoHS Compliant and 100% Lead Pb-Free
◆ 1.1MHz Fixed-Frequency PWM Operation
◆ Maximum Output Voltage up to 29V
◆ Operating Range : 2.2V to 6V
◆ Shutdown Supply Current:◆ Available in SOT23-6 Package
◆ Built-in Over Voltage Protection
◆ Minimize the External Component
◆ RoHS Compliant and 100% Lead Pb-Free
