Cxle86121 is a high-precision step-down LED constant current driver chip. The chip works in the critical continuous mode of inductor current, and is suitable for the non isolated step-down LED constant current power supply of 85vac ~ 265vac full range input voltage. The cxle86121 chip is internally integrated with 500V power switch, and adopts the patented floating drive framework and current detection mode. The chip has a very low working current. It does not need auxiliary winding detection and power supply, and only needs a few peripheral components to achieve excellent constant current characteristics, which greatly saves the system cost and volume. The cxle86121 chip has a high-precision current sampling circuit, and adopts patented constant current control technology to achieve high-precision LED constant current output and excellent line voltage regulation rate. The chip works in the inductive current critical mode, the output current does not change with the inductance and the LED working voltage, achieving excellent load regulation.
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[ CXLE86121 ]"
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
CXLE86121是一款高精度降压型LED恒流驱动芯片。芯片工作在电感电流临界连续模式，适用于85Vac~265Vac全范围输入电压的非隔离降压型LED恒流电源。 CXLE86121芯片内部集成500V功率开关，采用专利的 浮地驱动构架和电流检测方式，芯片的工作电流极低，无需辅助绕组检测和供电，只需要很少的外围元件，即可实现优异的恒流特性，极大的节约了系统成本和体积。 CXLE86121芯片内带有高精度的电流采样电路，同时采用了专利的恒流控制技术，实现高精度的LED恒流输出和优异的线电压调整率。芯片工作在电 感电流临界模式，输出电流不随电感量和LED工作电压的变化而变化，实现优异的负载调整率。CXLE86121具有多重保护功能，包括LED开路/短路保护，CS电阻短路保护，欠压保护，芯片温度过热调节等。CXLE86121采用SOP8封装。
二.产品特点
电感电流临界连续模式
内部集成500V功率管
无需辅助绕组检测和供电
芯片超低工作电流
宽输入电压
±5%LED输出电流精度
LED开路保护
LED短路保护
CS电阻短路保护
芯片供电欠压保护
过热调节功能
采用SOP8封装
三.应用范围
LED日光灯
LED吸顶灯
LED球泡灯
其它LED照明
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.......
| 恒压恒流驱动 | ||||||
| Part number | Package | PF | Topology | Pout Max(W) | MOS | Isolated/Non-isolated |
| CXLE86115C | SOP8 | 0.5 | FLYBACK | 5 | 650V/12Ω | Isolated |
| CXLE86116F | SOP8 | 0.5 | FLYBACK | 10 | 650V/4.8Ω | Isolated |
| CXLE86117 | SOT23-5 | 0.5 | FLYBACK | 50 | External | Isolated |
| CXLE86118 | SOT23-5 | 0.5 | BUCK | 70 | External | Non-isolated |
| CXLE86119F | SOP8 | 0.5 | BUCK | 18 | 650V/4.7Ω | Non-isolated |
| CXLE86120D | SOP8 | 0.5 | BUCK | 6 | 500V/10Ω | Non-isolated |
| CXLE86121 | SOP8 | 0.5 | BUCK | 18 | 500V/18Ω | Non-isolated |
