CXLE82127是一款专为背光设计的驱动程序。它包括一个高精度的电流接收器，允许低占空比调光和一个高效率的升压转换器，集成了低边和高边功率MOSEFT。它以最佳的0.6MHz频率运行，既能使用小型外部组件，又能提供最佳效率。它的内部电流限制高达1A，它可以驱动多达8个LED和50mA的总输出电流。真正的PWM调光可以通过EN引脚实现。CXLE82127最重要的特性之一是，它在调光占空比降至0.1%时提供准确的电流。这对背光非常重要，因为背光需要调暗到很低的亮度，同时仍然提供良好的一致性。为了最大限度地保护，CXL82127在30V有一个内部的OVP保护，以防止当LED串没有连接到输出时损坏芯片。
同步升压，无需肖特基二极管
内部电流源驱动，无需外部电流整定电阻器
±10%LED电流精度，降低1%
可调光0.1%
高达85%的效率（6个LED）
最多可驱动8个LED
30V输出过压保护
LED串短路保护
真正的脉宽调制亮度控制
1A电流限制
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[ CXLE82127 ]"
目录
7.相关产品
产品概述 返回TOP
The CXLE82127 is a driver specially designed for back-lighting. It consists of a high accuracy current sink that allows low duty dimming and a high efficiency step-up converter with an integrated low side and high side power MOSEFT. It runs withan optimal 0.6MHz frequency that enables use of small external components while still providing best efficiencies. It has an internal current limit as high as 1A, and it can drive up to 8 LEDs and 50mA in total output current. True PWMDimming can be achieved through the EN pin. One of the most important features of CXLE82127 is that it provides an accurate current at dimming duty cycle down to 0.1%. This is very important for backlights that need to dim to very low light while still providing good consistency. For maximum protection, the CXLE82127 has an internal OVP protection at 30V to prevent the chip from damages when the LED string is not connected to the output. CXLE82127 is available in a space-saving SOT23-6 package.
CXLE82127是一款专为背光设计的高性能驱动芯片。与传统背光驱动相比，内置了同步开关的控制方式，支持输出真关断，以防止屏意外短路时的保护，以及显著降低EN拉低时的静态漏电流。它以最佳的0.6MHz频率运行，外围器件少，同时仍然提供最佳效率。它的内部电流限制为1.2A，并且它可以在总输出电流中驱动多达8串LED，50mA的输出能力。
CXLE82127支持超低占空比输出，低至0.1%。为了最大保护，CXLE82127在30V时会启动一个内部OVP保护，以防止当LED未连接到输出时芯片损坏。
CXLE82127采用SOT23-6封装。
产品特点 返回TOP
Synchronous Boost, No Schottky Diode Needed
Internal Current Source Driving, no need of external current setting resistor
±10% LED Current Accuracy at 1% Diming Ratio
Capable of 0.1% dimming ratio
Up to 85% Efficiency (6 LEDs)
Drive up to 8 LEDs
30V Output Over Voltage Protection
LED string Short Circuit Protection
True PWM Brightness Control
1A current limit
应用范围 返回TOP
Cellphone and Smartphone
MID or Tablet PC
Camera
Car DVR Recorder
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
相关芯片选择指南 返回TOP 更多同类产品。。。。。
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LED驱动 |
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Device |
Device |
Architecture |
VIN |
VOUT |
Isw |
Vfb |
Switching |
IQ |
Package |
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Description |
(min) |
(max) |
(min) |
(max) |
(max) |
(V) |
Frequency |
(uA) |
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(V) |
(V) |
(V) |
(V) |
(A) |
(Hz) |
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高效单串10颗LED驱动 |
外部补偿 |
2.7 |
6 |
Vin |
40 |
0.7 |
0.2 |
600K |
600 |
SOT23-6 |
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|
高效单串10颗LED驱动 |
外部补偿 |
2.7 |
6 |
Vin |
40 |
0.7 |
0.2 |
600K |
600 |
DFN2x2-6 |
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24V升压100颗LED驱动 |
内部补偿 |
2.7 |
6 |
Vin |
24 |
3 |
0.2 |
1M |
250 |
SOT23-6 |
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|
高效单串10颗LED驱动 |
内部补偿 |
2.7 |
6 |
Vin |
40 |
1 |
0.2 |
800K |
250 |
SOT23-6 |
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| 30V/50mA LED 驱动 | Sync.True Shutoff | 2.5 | 5.5 | Vin | 30 | 1.2 | NA | 0.6 | 600 | DFN2 x2 -6 | |
| 30V/50mA LED 驱动 | Sync.True Shutoff | 2.5 | 5.5 | Vin | 30 | 1.2 | NA | 0.6 | 600 |
SOT23-6 |
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36V降压LED恒流驱动器 |
内部补偿 |
4.2 |
38 |
1 |
0.9Vin |
1.5 |
0.15 |
750K |
600 |
SOT23-6 |
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