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LP3773B Datasheet(PDF) 1 Page - Shenzhen Xinmao Microelectronics Co., Ltd.

Part # LP3773B
Description  Low power primary feedback control chip
PDF  7 Pages
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Manufacturer  LANDP [Shenzhen Xinmao Microelectronics Co., Ltd.]
Direct Link  https://www.chip-hope.com/
Logo LANDP - Shenzhen Xinmao Microelectronics Co., Ltd.

LP3773B Datasheet(HTML) 1 Page - Shenzhen Xinmao Microelectronics Co., Ltd.

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LP3773B
低功耗原边反馈控制芯片
LP3773B_CN_DS_Rev.2.5
www.chip-hope.com
SHENZHEN Chip Hope Micro-electronics LTD Confidential– Customer Use Only
概述
LP3773B 是一款恒压、恒流的原边反馈控制芯片，
内置 VCBO 为 850V 的功率三极管，适用于充电器和
适配器。
LP3773B 采用特有的输出线损补偿技术，可以有效
的补偿输出电流在输出线上的损耗压降。
LP3773B 内置环路补偿电路，无需外围补偿电路，
系统具有良好的稳定性。LP3773B 可以实现良好的
恒压、恒流特性，满足待机功耗小于 75mW。
LP3773B 具有多重保护功能，包括开路保护，过压
保护，短路保护等功能。
LP3773B 采用 SOP7 封装
特点
原边反馈控制
恒压、恒流精度高
≦75mW 待机功耗
内置 850V 三极管
可调的输入线电压补偿技术
可调的输出线损补偿技术
抖频减少系统电磁干扰
开路保护
短路保护
过压保护
欠压保护
应用
手机、无绳电话、PDA、MP3 和其它便携式设
备等的适配器、充电器
LED 驱动电源
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
AC
Vout
+
-
C
VCC
FB
CS
E
GND
图 1 LP3773B 典型应用图


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