CXLE81108boost转换器自动为WLED背光灯提供稳定的输出电压,而无需计算不同LED类型的输出。它还集成了一个提供高输出功率的50V NFET。六通道电流槽是恒流驱动的理想选择,匹配度小于3%(典型)。为了设置最大驱动电流,ISET引脚用于确定参考电流。电流接收器的每个通道被设置为该参考电流的58倍。一个脉宽调制管脚可以用于脉宽调制调光。CXLE81108提供了多种保护方案,以避免任何异常操作。过电流保护设计用于保护内部NFET。它还提供过电压和过温保护。CXLE81108可以检测开路或短路LED并提供保护。CXLE81108提供20针4X4mm TQFN封装。CXLE81108是用于背光应用的6通道boost WLED驱动程序。它具有高性能的boost变换器、3%电流匹配和精度的六通道电流接收器和PWM亮度调光控制
·5V至24V输入电源电压
增压转换器
自动调节输出电压
集成2.0A 50V NFET
过电流保护
过电压保护
90%以上的高效率
六通道电流接收器
最大30Ma电流汇席
3%电流匹配和精度
100:1脉宽调制亮度调光范围
·开路/短路LED保护
热关机
20针4mmX4mm TQFN小包装
 
[ CXLE81108 ]
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产品概述 返回TOP
产品特点 返回TOP
„ 5V to 24 V Input Supply Voltage
„ Boost Converter
Š Automatically Adjusting Output Voltage
Š Integrated 2.0A 50V NFET
Š Over Current Protection
Š Over Voltage Protection
Š Over 90% High Efficiency
„ Six Channel Current Sink
Š Maximum 30mA Current Sink
Š 3% Current Matching and Accuracy
Š 100:1 PWM Brightness Dimming Range
„ Open/Short LED protection
„ Thermal Shutdown
„ Small 20-pin 4mmX4mm TQFN package
应用范围 返回TOP
„ Notebook Displays LED Backlighting
„ LCD Monitor LED Backlighting
技术规格书(产品PDF) 返回TOP
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产品封装图 返回TOP

电路原理图 返回TOP

| LED Backlight Driver | |||||||||
| Part NO. | Vin(V) min. | Vin(V) max. | CH | VOUT (max) | ISW (A) | FSW (kHz) | VLED FB(V) | Note | Package | 
| 2.5 | 5.5 | 1 | 20 | 1.2 | 1000 | 0.1/0.2 / 0.3 | LX,GND,FB,EN,OVP,VIN,EN Dimming 100~200kHz,6SxP | TSOT23-6 | |
| 2.5 | 5.5 | 1 | 40 | 1.2 | 1000 | 0.2 | LX,GND,FB,EN,OVP,VIN,EN Dimming 100~200kHz | TSOT23-6 | |
| 4.2 | 24 | 6 | 40 | 2 | 600 | 1.25 | 30mA/CH,Dimming 100~25kHz,EN,OCP, OVP,PWM/DC/Mixed DimmingMode | TQFN4X4-20 | |
| 2.7 | 5.5 | 6 | 40 | 2 | 600 | 1.25 | 30mA/CH,Dimming 100~25kHz,EN,OCP, OVP,PWM/DC/Mixed Dimming Mode | TQFN4X4-20 | |
| 2.5 | 20 | 1 | 20 | 1.2 | 1000 | 0.2 | OVP,FB,DIMC,GND,LX,BP,PWM, EN,PWM Dimming 100~200kHz,6SxP | TDFN2X2-8 | |
| 2.5 | 5.5 | 1 | 40 | 1.2 | 1000 | 0.2 | LX,GND,FB,EN,OVP,VIN,EN Dimming 100~200kHz | SOT23-6 | |
| 2.7 | 5.5 | 1 | 28 | 0.85 | 1000 | 0.2 | LX,GND,FB,EN,OVP,IN | TDFN2X2-8/SOT-23-6 | |
| 2.7 | 7 | 1 | 26 | 0.7 | 600 | 0.2*EN Duty | FB,COMP,GND,LX, EN,VIN,5k~100kHz EN BrightnessControl | TDFN2X2-6 | |
| 2.7 | 7 | 1 | 38 | 0.7 | 600 | 0.2*EN Duty | FB,COMP,GND,LX, EN,VIN,5k~100kHz EN BrightnessControl | TDFN2X2-6 | |
| 5 | 24 | 6 | 40 | 2 | 1000 | 1.23 | 30mA/CH,PWM dimming,EN,SS,OCP, OVP,OTP,OLP,SLP | TQFN3X3-16 | |
| CXLE81107L | 3.2 | 24 | 6 | 40 | 2 | 1000 | 1.23 | 30mA/CH,PWM dimming,EN,SS,OCP, OVP,OTP,OLP,SLP | TQFN3X3-16 | 
| 5 | 24 | 6 | 50 | 2 | 750 | 1.23 | 30mA/CH, PWM dimming, EN,SS, OCP,OVP,OTP,OLP | TQFN4X4-20 | |
| 4.2 | 24 | 8 | 48 | 3 | 1000 | 0.6 | 30mA/CH,PWM dimming,EN,SS,OCP, OVP,OTP,OLP | TQFN4X4-24 TSSOP20(FD) | |
| 7 | 18 | 1 | EXT | VCS SET | ADJ | 1.2 | Programmable ILED, PWM Dimming, Hiccup mode for OVP,SCP | SOP-16 | |
| 10 | 30 | 4 | EXT | VCS SET | ADJ | 0.8 | 20mA~150mA/CH, PWM dimming,EN, SS,OCP,OVP,OTP, OLP,SLP | TSSOP20(FD) | |
| 7 | 27 | 4 | EXT | VCS SET | ADJ | 1.23 | Programmable ILED,True PWM& Analog Dimming,Hiccup mode for OVP,OLP, SLP | TQFN4X4-24 TQFN4X4-28 | |
| 5 | 28 | 12 | EXT | VCS SET | ADJ | 0.6 | 60mA/CH G5997,120mA/CH G5999 Analog& PWM Dimming,Slope comp.,OCP,UVP,OTP, Hiccup mode for OVP,SLP | SOP28/TSSOP18(FD)/TQFN5X5-28 | |
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