LP3302
High Performance, Constant Current Switching Regulator For White LED
概述
LP3350 is a cost effective LED driver optimized for LCD monitor and LCD TV backlighting application. It provides a high performance LED backlight solution with minimized bill of material count.The LP3350 contains a PWM boost driver which uses current mode control and fixed frequency operation to regulate the LED current. The LED current is sensed through an external current sense resistor. The voltage across the sensing resistor is compared with reference level of 0.3V, the erroramplified to control the pulse width of the power switch thus to regulate the current flowing the LED.Otherwise, The LP3350 offers external frequency PWM dimming method for a wide range of dimming control.Other features include over current protection (OCP), output over voltage protection (OVP), and under-voltage lockout (UVLO). The LP3350 is available in a space saving SOP-8 package.
应用
◆ TFT LCD TV
◆ TFT LCD Monitor
◆ Flat Panel Display
◆ TFT LCD Monitor
◆ Flat Panel Display
数据参数
数据参数
输入电压 (V)
8~28
最大输出电压(V)
Adj.
工作模式
Boost
LED通道数
1
驱动LED数量(pcs)
Upon Ext.MOSFET
开关电流(A)
Ext
开关频率 (Hz)
200K
FB电压(mV)
300
亮度调节
PWM
过压保护(V)
Adj
产品特征/功能
OVP,OTP,Constant current,Large current
应用
Backlight
封装
SOP8
特征
特征
◆ Wide VIN Range: 8V to 28V
◆ Current-Mode PWM Controller
◆ External PWM Dimming Mode
◆ Under-Voltage Lockout
◆ Over Voltage Protection
◆ Over Current Protection
◆ Under-Voltage Protection
◆ Over-Temperature Protection
◆ Available in SOP-8
◆ RoHS Compliant and Halogen Free
◆ Pb-Free Package
◆ Current-Mode PWM Controller
◆ External PWM Dimming Mode
◆ Under-Voltage Lockout
◆ Over Voltage Protection
◆ Over Current Protection
◆ Under-Voltage Protection
◆ Over-Temperature Protection
◆ Available in SOP-8
◆ RoHS Compliant and Halogen Free
◆ Pb-Free Package
