LP2773 datasheet(1/7 Pages) LANDP

Part #	LP2773

Description	Low start current

PDF	7 Pages

Scroll/Zoom	100%

Manufacturer	LANDP [Shenzhen Xinmao Microelectronics Co., Ltd.]

Direct Link	https://www.chip-hope.com/

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1 / 7 page

LP2773

版本号：V1.0 2016.05.16

深圳市芯茂微电子有限公司

http://www.chip-hope.com

第 1 页共 7 页

概述

LP2773 是内置 V

CBO 为 850V 的功率三极管的原边

控制、带线损补偿和峰值电流补偿功能的高端无光

耦开关电源控制器。它采用 PFM 调制技术，提供精

准的恒压/恒流（CV/CC）控制环路，具有非常高的

稳定性和平均效率。

采用 LP2773 设计系统，可以省去光耦、次级

反馈控制、环路补偿，电路简单，降低成本。

主要特点



低启动电流



原边控制模式



PFM 调制



≦75mW 待机功耗



高精度恒压/恒流



前沿消隐



过压保护



欠压锁定



环路开路、短路保护



过温保护



逐周期限流



线损补偿



峰值电流补偿

应用范围



线性电源和 RCC 开关电源升级换代



其它辅助电源等

典型应用

图 1 LP2773 典型应用图

SOP7-LP2773

AC

Vout

+

-

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LP2773 Datasheet(PDF) 1 Page - Shenzhen Xinmao Microelectronics Co., Ltd.

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