CXLE83170B CXLE83170C是一款高度集成的电源开关，具有恒流（CC）控制，适用于LED照明应用。该集成电路采用准谐振（QR）Buck拓扑和有源PFC控制，以实现高PF、低THD和高效率。CXLE83170B CXLE83170C集成了500V功率MOSFET和高压启动及IC电源电路，只需很少的外部元件。该集成电路在整个开关周期内检测电感电流，可以实现高精度的电容控制，并具有良好的线路和负载调节能力。CXLE83170B CXLE83170C集成了欠压闭锁（UVLO）、逐周限流（OCP）、热foldak（OTP）、输出过压保护（OVP）、LED开/短路保护等功能和保护
用于高功率因数和低THD的有源功率因数校正
带通用输入的PF>0.9
内置高压启动和IC电源电路
内置500V功率MOSFET
准谐振，高效
l±3%CC调节
极低的VDD操作电流
优良的线路和负载调节
l LED开路/短路保护
内置保护：
输出过压保护（OVP）
逐周限流（OCP）
前缘冲裁（LEB）
LED开路/短路保护
片上热折叠（OTP）
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[ CXLE83170B ]
目录
7.相关产品
产品概述 返回TOP
CXLE83170B CXLE83170C is a highly integrated power switch with constant current (CC) control for LED lighting applications. The IC utilizes Quasi-Resonant (QR) Buck topology with active PFC control for high PF, low THD, and high efficiency. CXLE83170B CXLE83170C integrates 500V power MOSFET with high voltage startup and IC power supply circuit, which requires very few external components. The IC senses the inductor current during the whole switching cycle, which can achieve high precision CC control with excellent line and load regulation. CXLE83170B CXLE83170Cintegrates functions and protections of Under Voltage Lockout (UVLO), Cycle-by-cycle Current Limiting (OCP), Thermal Foldack (OTP), Output Over Voltage Protection (OVP), LED Open/Short Protection, etc. CXLE83170B CXLE83170Cuse SOP-7 package.
产品特点 返回TOP
Active PFC for High PF and Low THD
PF>0.9 with Universal Input
Built-in HV Startup and IC Power Supply Circuit
Internal 500V Power MOSFET
Quasi-Resonant for High Efficiency
±3% CC Regulation
Very Low VDD Operation Current
Excellent Line and Load Regulation
LED Open/Short Protection
Build in Protections:
Output Over Voltage Protection (OVP)
Cycle-by-Cycle Current Limiting (OCP)
Leading Edge Blanking (LEB)
LED Open/Short Protection
On-Chip Thermal Foldback (OTP)
应用范围 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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| 高PFC高效非隔离降压型恒流LED驱动芯片(PFC Controller Non-isolated Buck Offline LED Driver) | ||||||
| Part No. | Features | Mode | VIN | Current Accu. | Rdson | Package |
| CXLE83170B | PFC controller Non-isolated Buck LED Driver | PWM | 85~264V | ±3% | 5Ω | SOP7 |
| CXLE83170C | PFC controller Non-isolated Buck LED Driver | PWM | 85~264V | ±3% | 3Ω | SOP7 |
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