Cxle8624 is a PWM dimming, low voltage difference LED linear step-down constant current driver. Cxle8624 only needs an external resistor and a NMOS tube to form a complete LED constant current drive circuit. Adjusting the external resistor can adjust the output current, which can be adjusted from 20mA to 3.0A. The cxle8624 can also use PWM dims by adding external signals at the dim pin. The frequency range of the input signal at the dim pin is 200Hz to 10kHz. When dims do not need dimming function, they can be suspended. The normal working voltage of cxle8624 is 3.0V to 6.0V. When the power supply voltage is higher than 6.0V, the chip working voltage can be clamped at 6.0V through external clamp circuit to meet the requirements of high voltage, high current and constant current LED drive
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[ CXLE8624 ]"
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
CXLE8624是一种PWM调光的、低压差的LED线性降压恒流驱动器。CXLE8624仅需要外接
一个电阻和一个NMOS管就可以构成一个完整的LED恒流驱动电路，调节该外接电阻就可以
调节输出电流，输出电流可调范围为20mA到3.0A。CXLE8624还可以通过在DIM引脚加外部
信号进行PWM调光，DIM脚输入信号的频率范围是200HZ到10KHZ，当不需要调光功能时，
DIM可以悬空。CXLE8624正常工作电压为3.0V到6.0V，当电源电压高过6.0V时，通过外部
的钳位电路使芯片工作电压钳位在6.0V即可满足高压大电流恒流LED驱动。
CXLE8624采用SOT-23-5的封装形式。
二.产品特点
电源电压：3.0V~6.0V
PWM调光频率：200HZ~10KHZ
输出电流：20mA到3.0A。
输出电流精度：优于±5%
仅需外接一个电阻和一个NMOS管
电压可开展至400V以上，电流可扩展到3.0A
三.应用范围
线性LED照明驱动
PWM调光的LED照明驱动
LED手电筒、LED台灯、LED矿灯、LED日光灯等
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
| LED驱动 > 线性恒流 | ||||||
| 产品型号 | 输入电压 | 输出电压 | 输出电流 | 工作效率 | 产品封装 | 备注 |
| CXLE8624 | 2.7-6V | 降压 | 20mA-3.0A | ≦85% | SOT-23-5 | 具有PWM调光，电压可开展至400V以上，电流可扩展到3.0A |
| CXLE8625 | 2.7-5.5V | 低于输入电压 | 100mA-3A | 90 | SOT23-5 | 线性降压恒流 |
| CXLE8626 | 2.7-5.5V | 低于输入电压 | 100mA-3A | 95 | SOT89-5 | 线性降压恒流流 |
| CXLE8627 | 2.7-5.5V | 低于输入电压 | 120-380mA | 90 | SOT89-3 | 线性降压恒流流 |
