Cxle8403 is a high-performance primary side feedback control power switch chip applied to off-line low-power AC / DC switching power supply. It can achieve high-precision constant current output within the full voltage input range, with accuracy less than ?5%, without loop compensation, and can save optocoupler, TL431, transformer auxiliary winding and other components and reduce costs. In order to improve the reliability of the system, some protection functions are integrated in the chip, such as cycle by cycle peak current limitation, FB over-voltage protection, output on / short-circuit protection and soft start-up
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[ CXLE8403 ]"
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
CXLE8403是应用于离线式小功率AC/DC开关电源的高性能的原边反馈控制功率开关芯片，在全电压输入范围内实现高精度恒流输出，精度小于±5%，无需环路补偿，并可使系统节省光耦，TL431以及变压器辅助绕组等元件，降低成本。芯片内部集成了逐周期峰值电流限制，FB过压保护，输出开/短路保护和开机软启动等保护功能,以提高系统的可靠性
二.产品特点
拓扑结构支持：反激及低成本 BUCK-Boost
采用730V 单芯片集成工艺
宽电压 85Vac~265Vac 输入电压范 围内恒流精度小于±5%
全电压范围内兼容 1~3W
无需辅助绕组的原边 反馈控制技术可使系统节省光 耦、431 等元件
无需环路补偿
内置前沿消隐电路(LEB)
逐周期峰值电流比较
输出开/短路保护
内置开机软启动
内置 FB 过压保护及短路保护等功能
封装形式：SOP8
三.应用范围
LED 照明驱动
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......
| PF>0.5/隔离 | ||||||
| IC Name | Topology | POUT.MAX | IOUT Precision | HV_MOSFET | BVDSS | Package |
| CXLE8401 | PSR | 5W | <±5% | Inside | 730V | SOP8 |
| CXLE8402 | PSR | 7W | <±5% | Inside | 730V | SOP8 |
| CXLE8331 | PSR&Buck | - | <±5% | External | - | SOT23-6 |
| CXLE8403 | PSR | 5W | <±5% | Inside | 730V | SOP8 |
| CXLE8404 | PSR | 7W | <±5% | Inside | 730V | SOP8 |
