LP3352 is a cost-effective LED driver optimized for middle size TFT-LCD backlight application. LP3352 offers a high-efficiency current mode boost converter with integrated 2.5A/40V power MOS. The six integrated current sink can be adjusted through an external resistor.An unused LED channel can be disabled by connecting the channel to ground.In addition, the LP3352 offers an external pulse-width-modulation (CTRL) method for LED dimming control. The LED current is turned on and off in response to the duty cycle and frequency applied at the CTRL pin.The LP3352 features several protection functions including output over voltage protection (OVP), under-voltage lockout (UVLO), over temperature protection (OTP) and LED string open and short detection. The LP3352 is available in a space saving QFN-16 (0.5mm pitch) package.
应用
◆ Notebook LED Backlight ◆ Monitor LED Backlight ◆ Tablet LED Backlight
数据参数
数据参数
输入电压 (V)
2.7~24
最大输出电压(V)
39
工作模式
Boost
LED通道数
6
驱动LED数量(pcs)
6S13P
开关电流(A)
2.5
开关频率 (Hz)
1.25M
FB电压(mV)
600
亮度调节
PWM
过压保护(V)
39
产品特征/功能
6CH, OCP,OVP,OTP
应用
Backlight
封装
QFN3X3
特征
特征
◆ Input Supply Range : 2.5V ~ 5.5V ◆ Wide VIN Range: 2.7V to 24V ◆ Current-Mode Boost Converter ◆ Integrated 2.5A/40V boost power MOS ◆ Built-in LED soft-start current control ◆ Six programmable current sinks Current up to 30mA per channel PWM dimming from 100Hz to 30kHz 2.5% current matching 3% current accuracy ◆ LED string open/short detection ◆ Over Voltage Protection ◆ Over Temperature Protection ◆ Under Voltage Lockout ◆ QFN-16 (3mm×3mm) Package ◆ RoHS Compliant and Pb-Free
