Cxle8435 is a kind of LED constant current driver chip with high precision primary side feedback. The chip works in the discontinuous mode of inductive current, and is suitable for flyback isolation LED constant current power supply with input voltage of 85vac ~ 265vac and power below 5W. The cxle8435 chip is internally integrated with 650V power switch, which adopts the original side feedback mode, without secondary feedback circuit or compensation circuit, and only requires a few peripheral components to achieve constant current. With patented drive and current detection mode, the working current of the chip is very low, no need for transformer auxiliary winding detection and power supply, further reducing peripheral components, greatly saving the system cost and volume. The cxle8435 chip has a high-precision current sampling circuit, which makes the LED output current accuracy within ?5%. The chip adopts a unique constant current control mode, which can achieve excellent linear adjustment rate. Cxle8435 has multiple protection functions, including LED open / short circuit protection, CS resistance short circuit protection, undervoltage protection, chip over temperature protection
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[ CXLE8435 ]"
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
CXLE8435是一款高精度原边反馈的LED恒流驱动芯片.芯片工作在电感电流断续模式,适用于 85Vac~265Vac全范围输入电压、功率5W以下的反激式隔离LED恒流电源。 CXLE8435芯片内部集成 650V功率开关，采用原边反馈模式，无需次级反馈电路，也无需补偿电路，只需要极少的外围元件即可实现恒流。采用专利的驱 动和电流检测方式，芯片的工作电流极低，无需变压器辅助绕组检测和供电，进一步减少外围元器件，极大的节约了系统成本和体积。 CXLE8435 芯片内带有高精度的电流取样电路，使得LED输出电流精度达到±5%以内。芯片采用了特有的恒流控制方式，可以达到优异的线性调整率。 CXLE8435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，芯片过温保护等。 CXLE8435采用SOP8封装。
二.产品特点
内部集成650V功率管
原边反馈恒流控制，无需次级反馈电路
无需变压器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短路/开路保护
CS电阻短路保护
芯片供电欠压保护
过温保护
采用SOP8封装
三.应用范围
GU10 LED射灯
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......
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AC/DC隔离低PF |
||||||||
|
Part |
PF |
Number of |
Internal MOS |
Internal MOS |
Open circuit |
Pout@Vin: |
Pout@Vin: |
Package |
|
number |
windings |
Rdson（Ω） |
BVDSS（V） |
protection |
85-265V（W) |
176-265V（W) |
||
|
0.5 |
2 |
30 |
650 |
Internal |
3 |
4 |
CPC4 |
|
|
0.5 |
2 |
18 |
650 |
Internal |
5 |
6 |
CPC4 |
|
|
0.5 |
2 |
30 |
650 |
Internal |
3 |
4 |
TO92 |
|
|
0.5 |
2 |
18 |
650 |
Internal |
5 |
6 |
TO92 |
|
|
0.5 |
2 |
30 |
650 |
Internal |
3 |
4 |
SOP8 |
|
|
0.5 |
2 |
18 |
650 |
Internal |
5 |
6 |
SOP8 |
|
|
0.5 |
2 |
12 |
650 |
Internal |
5 |
6 |
SOP8 |
|
|
0.5 |
2 |
14 |
650 |
Internal |
5 |
6 |
SOP8 |
|
|
0.5 |
2 |
9 |
650 |
External |
7 |
10 |
SOP8 |
|
|
0.5 |
2 |
9 |
650 |
External |
12 |
15 |
DIP8 |
|
|
0.5 |
2 |
4.5 |
650 |
External |
18 |
21 |
DIP8 |
|
|
0.5 |
2 |
24 |
650 |
External |
3 |
5 |
SOP8 |
|
|
0.5 |
2 |
14 |
650 |
External |
5 |
7 |
SOP8 |
|
|
0.5 |
2 |
9 |
650 |
External |
7 |
10 |
SOP8 |
|
|
0.5 |
3 |
9 |
600 |
External |
12 |
15 |
DIP8 |
|
|
0.5 |
3 |
4.5 |
650 |
External |
18 |
21 |
DIP8 |
|
|
0.5 |
3 |
2 |
650 |
External |
24 |
30 |
DIP8 |
|
|
0.5 |
3 |
- |
- |
External |
50 |
75 |
SOT23-5 |
|
|
0.5 |
3 |
- |
- |
External |
50 |
75 |
SOT23-5 |
|
