Cxle8271 is a kind of LED driver chip with high efficiency supporting SCR dimming. The chip works in the inductive current critical continuous mode and is suitable for the LED driving power supply with buck, buck boost and fly back structures. Cxle8271 chip is internally integrated with 300V power switch. It adopts patented drive and current detection mode. The working current of the chip is very low. Only a few peripheral components are needed to achieve excellent constant current characteristics, which greatly saves the system cost and volume. Cxle8271 has multiple protection functions, including LED open circuit protection, led short circuit protection, CS resistance short circuit protection, undervoltage protection, chip temperature overheat regulation,

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[ CXLE8271 ]"
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
CXLE8271是一款高效率支持可控硅调光的LED驱动芯片。芯片工作在电感电流临界连续模式,适用于 Buck,Buck-Boost,Fly-back结构的LED驱动电源。CXLE8271芯片内部集成300V功率开关,采用专利的驱动和电流检测方式,芯片的工作电流极低,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。CXLE8271 具有多重保护功能,包括LED开路保护,LED短路保护,CS电阻短路保护,欠压保护,芯片温度过热调节等。CXLE8271采用SOP8封装。
二.产品特点
支持可控硅调光
内部集成300V功率管
电感电流临界连续模式
芯片超低工作电流
±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球泡灯
LED蜡烛灯
其它LED照明
四.技术规格书(产品PDF)
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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......
无级调光 | |||||||
Part number | Package| | PF | Topology | Pout Max(W) | MOS | Open Circuit | Dimming |
Protection | |||||||
CXLE8267 | SOP8 | 0.5 | BUCK | 24 | 550V/6.5Ω | - | PWM |
CXLE8267G | DIP7 | 0.5 | BUCK | 40 | 500V/3Ω | External | PWM |
CXLE8267H | DIP7 | 0.5 | BUCK | 50 | External | PWM | |
CXLE8275 | SOP16 | 0.5 | BUCK | 70/Chaneel | External | External | PWM |
CXLE8268 | SOP8 | 0.9 | BUCK | <50 | External | - | Analog |
CXLE8269 | SOP8 | 0.9 | FLYBACK/BUCK-BOOST | <50 | External | - | Analog |
CXLE8270 | SOP8 | 0.9 | BUCK | 10 | 300V/2Ω | External | PWM |
CXLE8271 | SOP8 | 0.9 | BUCK | 12 | 300V/1.2Ω | External | PWM |
CXLE8272 | SOP8 | 0.9 | BUCK | 650V/4.5Ω | External | ||
CXLE8273 | SOP8 | 0.9 | BUCK | External | |||
CXLE8274 | SOP8 | 0.9 | BUCK | <50 | 500V/0.5Ω | External | - |