CXLE8140是一个恒流、高效率的LED驱动器。内部MOSFET可驱动多达6个串联白光led和3S13P led，最小电流限制为1.5A，电压为26V。脉冲宽度调制（PWM）信号可应用于LED调光的EN引脚。该器件采用1MHz固定开关频率工作，以减少输出纹波，提高转换效率，并允许使用小型外部元件。
CXLE8140有SOT-23-6L组件。标准产品无铅无卤。
输入电压范围：3~5.5V
打开LED保护：26V
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：1.5A（最小）
•脉宽调制调光频率：（5KHz至200KHz）
PWM调光占空比：最小4%
[ CXLE8140 ]
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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 CXLE8140 is a constant current, high efficiency LED driver. Internal MOSFET can drive up to 6 white LEDs in series and 3S13P LEDs with Min. 1.5A current limit and 26V OVP. A Pulse-Width-Modulation (PWM) signal can be applied to the EN pin for LED dimming. The device operates with 1MHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows use small external components.
The CXLE8140 is available in SOT-23-6L package. Standard product is Pb-free and Halogen-free.
二.产品特点
Input voltage range : 3~5.5V
Open LED Protection : 26V
Reference Voltage : 200mV (±5%)
Switching frequency : 1MHz (Typ.)
Efficiency : Up to 92%
Main switch current limit : 1.5A (Min.)
PWM Dimming frequency : (5KHz to 200KHz)
PWM Dimming Duty : Min. 4%
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......
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| 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 |
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| 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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