CXLE81107 CXLE81107L是用于背光应用的6通道增强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。boost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。开关频率为1MHz。它还集成了一个提供高输出功率的40V 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1000倍。一个脉宽调制管脚可以用于脉宽调制调光。CXLE81107 CXLE81107L提供多种保护方案，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。CXLE81107 CXLE81107L可以检测到开路或短路LED并提供保护。
·5V至24V输入电源电压
增压转换器
自动调节输出电压
1.0兆赫开关频率
集成2.0A 40V NFET
内部回路补偿和软启动
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
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[ CXLE81107 ]
目录
7.相关产品
产品概述 返回TOP
The CXLE81107 CXLE81107L is a 6-channel boost WLED driver for backlight applications. It features a high-performance boost converter, six channel current sink with 3% current matching and accuracy, and PWM brightness dimming control. The boost converter automatically provides the regulated output voltage for the WLED backlight without the need to calculate the output for different LED types. The switching frequency is 1MHz. It also integrates a 40V NFET that provides high output power. The 6-channel current sink is ideal for constant current driving, and, well matched less than 3% (typical). To set the maximum driving current, the ISET pin is used to determine reference current. Each channel of the current sink is set to 1000 times of this reference current. A PWM pin can be used for PWM dimming. The CXLE81107 CXLE81107L provides many protection schemes to avoid any abnormal operation. Over current protection is designed to protect internal NFET. It also provides over voltage and over temperature protection. The CXLE81107 CXLE81107L can detect open or short LED and offer protections. The GCXLE81107 CXLE81107Lis available in a 16-pin 3x3mm TQFN package.
产品特点 返回TOP
„ 5V to 24 V Input Supply Voltage
„ Boost Converter
Š Automatically Adjusting Output Voltage
Š 1.0MHz Switching Frequency
Š Integrated 2.0A 40V NFET
Š Internal Loop Compensation and Soft Start
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 16-pin 3mmx3mm 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
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LED Backlight Driver |
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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 |
|
|
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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