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RM3272 Datasheet(PDF) 1 Page - Shaanxi Reactor Microelectronics Co., Ltd.

Part # RM3272
Description  High efficiency and high precision, PSR charger driver chip
PDF  8 Pages
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Manufacturer  REACTOR [Shaanxi Reactor Microelectronics Co., Ltd.]
Direct Link  http://www.reactor-micro.com
Logo REACTOR - Shaanxi  Reactor  Microelectronics  Co., Ltd.

RM3272 Datasheet(HTML) 1 Page - Shaanxi Reactor Microelectronics Co., Ltd.

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高效率高精度,PSR 充电器驱动芯片
RM3272D 规格书
RM3272D_Rev.1.0
www.reactor-micro.com
- 1-
陕西亚成微电子股份有限公司
产品概述:
RM3272D 是一款高性能离线式
PFM 电源管理 IC,可用在小功率交流
转直流充电器和适配器中,其采用原
边反激拓扑应用电路,省掉了光耦和
TL431。内部集成高精度恒压控制器,
可实现
%
5
的精度。
在恒压工作模式下,
INV 脚通过采
样辅助绕组电压来稳定输出电压;在
恒流工作模式下,输出电流和输出功
率都是通过
CS 脚外接的 RS 电阻来调
节。
值得注意的是,
RM3272D 通过内
置的线补功能实现高负载调整率。恒
压轻载时,通过
PWM 方式调节导通
占空比稳定输出。
RM3272D 集成多种保护功能:软
启动、逐周期电流限制、
VDD 过压保
护、
VDD 过压箝位和欠压锁定等功能;
另外内置抖频技术可提高抗
EMI 能
力。
RM3272D 采用无铅(PB FREE)
封装。
功能特性:
 全电压输入范围内±5%输出恒压/
恒流精度
 原边检测,无需光耦和 TL431
 内置自适应峰值电流调节控制
 内置初级绕组电感补偿
 可编程线压降补偿
 开机软启动技术
 内置前沿消隐技术
 逐周期电流限制技术
 VDD 过压保护/欠压锁定/过压箝
位功能
应用领域
:
 便携式手机充电器
 数码相机充电器
 小功率适配器
 台式机
/电视机辅助电源等


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