CXLE8143是一个恒流、高效率的LED驱动器。内部MOSFET可以驱动多达10个串联的白色led，电流限制为1.2A，电压为38V。脉冲宽度调制（PWM）信号可应用于LED调光的EN引脚。该器件工作在1MHz固定开关频率，以减少输出纹波，提高转换效率，并允许使用小的外部组件。
CXLE8143在TSOT-23-6L包中提供。标准产品无铅无卤。
输入电压范围：2.7~5.5V
开路LED保护：38V（典型）
参考电压：200mV（±5%）
开关频率：1MHz（典型）
•效率：高达92%
主开关电流限制：1.2A（典型值）
PWM调光频率：5KHz～200khz
PWM调光占空比：0.5%~100%
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[ CXLE8143 ]
目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（PDF文档）
一.产品概述
The CXLE8143 is a constant current, high efficiency LED driver. Internal MOSFET can drive up to 10 white LEDs in series with 1.2A current limit and 38V OVP. A Pulse-Width-Modulation (PWM) signal can be applied to the EN pin for LED dimming. The device operates at 1MHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows using small external components.
The CXLE8143 is available in TSOT-23-6L Package. Standard product is Pb-free and Halogen-free.
二.产品特点
Input voltage range : 2.7~5.5V
Open LED Protection : 38V (Typ.)
Reference Voltage : 200mV (±5%)
Switching frequency : 1MHz (Typ.)
Efficiency : Up to 92%
Main switch current limit : 1.2A (Typ.)
PWM Dimming frequency : 5KHz to200KHz
PWM Dimming Duty Cycle : 0.5% ~ 100%
三.应用范围
Smart Phones
Tablets
Portable games
四.技术规格书（产品PDF)
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
五.产品封装图
六.电路原理图
七.相关芯片选择指南 更多同类产品......
| LV Product>LED Backlight | ||||||||
| Product | Character | Typical Effciency | Operating Voltage | Quiescent Iq | Output Voltage | Iq in Shutdown | SW Current Limit | Package |
| CXLE8135 | 1MHz Asynchronous PWM | 88% | 2.5~5.5V | 400μA | UP to 20V | 1μA | 1A | SOT23-5L |
| CXLE8136 | 1MHz OVP Asynchronous PWM | 88% | 2.5~6V | 550μA | Up to 25V | 1μA | 1A | SOT23-6L |
| CXLE8137 | 1MHz OVP Asynchronous PWM | 92% | 2.5～5.5V | 400μA | Up to 36V | 1μA | 1.2A | SOT23-6L |
| CXLE8138 | 1MHz OVP Asynchronous PWM | 92% | 2.5～5.5V | 400μA | Up to 36V | 1μA | 1.2A | SOT23-6L DFN22-8L |
| CXLE8139 | 1MHz OVP Asynchronous PWM | 92% | 2.5~5.5V | 400μA | Up to 36V | 1μA | 2A | TSOT23-6L DFN22-8 |
| 背光驱动 | ||||||||||
| Product | VIN | VIN | VOVP | VFB | IQ | ILIM | R(ON) | Freq. | Efficiency | Package |
| Min | Max | Typ | Typ | Typ | Min | Typ | Typ | Max | ||
| (V) | (V) | (V) | (mV) | (uA) | (A) | (Ω) | (MHz) | (%) | ||
| CXLE8140 | 3 | 5.5 | 38 | 0.2 | 300 | 1.5 | 0.3 | 0.6 | 91 | SOT-23-6L |
| CXLE8141 | 3 | 5.5 | 26 | 0.2 | 300 | 1.5 | 0.3 | 1 | 91 | SOT-23-6L |
| CXLE8142 | 2.7 | 5.5 | 38 | 0.2 | 400 | 0.8 | 0.6 | 0.6 | 91 | DFN2020-6L |
| CXLE8143 | 2.7 | 5.5 | 38 | 0.2 | 200 | 1.2 | 0.45 | 1 | 92 | TSOT-23-6L |
| CXLE8144 | 2.7 | 5.5 | 38 | 0.2 | 400 | 0.85 | 0.4 | 1.5 | 91 | DFN2*2-6L |
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