OCP8191 datasheet(1/10 Pages) ORIENT-CHIP

部件名	OCP8191

功能描述	Non-isolated quasi-resonant step-down LED constant current driver

PDF	10 Pages

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制造商	ORIENT-CHIP [Shanghai Orient-Chip Technology Co.,LTD.]

网页	https://www.orient-chip.com/

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Ver. 1.0 Oct. 13, 2015

OCP8191

非隔离准谐振降压 LED 恒流驱动器

 典型应用电路

Drain

CS

VCC

OCP8191

图 1 典型应用电路

 概述

OCP8191 是一款高度集成的电源开关，采用

准谐振降压（QR-Bulk）模式，应用于恒流控制 LED

照明。

OCP8191 包含了一个 550V 功率 MOSFET 开

关与一个功率控制器芯片。此外，芯片还集成了高

压启动、IC 供电电路和一种创新型退磁检测电路，

省去了变压器辅助绕组。芯片采用准谐振控制以提

高效率。

OCP8191 集成了多种保护电路，包括欠压锁

定（UVLO），逐周期过流保护（OCP），过热调节

（OTP）和 LED 短路保护等。

 特征



集成 550V 功率 MOSFET



无需辅助绕组检测



准谐振模式以提高效率



内部集成过热功率调节



内部集成充电电路和快速启动



±4%恒流控制器



极低的 VCC 工作电流



内部集成 AC 线电压恒流补偿



内部保护电路：



LED 短路保护



逐周期过流检测



芯片过热保护



VCC 欠压锁定功能



脚位悬空保护



封装类型 TO-92、TSOT-23-5L

 应用



LED 照明

类似零件编号 - OCP8191

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