LP3302
High Performance, Constant Current Switching Regulator For White LED
概述
The LP3354 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 feedback voltage, the error amplified to control the pulse width of the power switch thus to regulate the current flowing the LED. Also, the feedback voltage can be programed by IIC interface.Otherwise, The LP3354 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), andunder-voltage lockout (UVLO). The LP3354 is available in a space saving SOP-10 (1mm pitch) and DFN-10 (0.5mm pitch) 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)
7~24
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)
120K
FB电压(mV)
400
亮度调节
PWM
过压保护(V)
Adj
产品特征/功能
OVP,OTP,Constant current,Large current，I2C
应用
Backlight
封装
SOP10/DFN-10(3*3)
特征
特征
◆ Wide VIN Range: 7V to 24V
◆ Programmable FB Voltage from 0.125V to 0.9V
◆ Current-Mode PWM Controller
◆ External PWM Dimming Mode
◆ Under-Voltage Lockout
◆ Over Voltage Protection
◆ Over Current Protection
◆ Over-Temperature Protection
◆ Available in SOP-10, DFN-10
◆ RoHS Compliant and Halogen Free
◆ Pb-Free Package
◆ Programmable FB Voltage from 0.125V to 0.9V
◆ Current-Mode PWM Controller
◆ External PWM Dimming Mode
◆ Under-Voltage Lockout
◆ Over Voltage Protection
◆ Over Current Protection
◆ Over-Temperature Protection
◆ Available in SOP-10, DFN-10
◆ RoHS Compliant and Halogen Free
◆ Pb-Free Package
