UC1846-DIE
www.ti.com.cn
ZHCSAG1 –NOVEMBER 2012
电流模式脉宽调制 (PWM) 控制器
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特性
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自动前馈补偿
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具有宽共模范围的差分电流感测放大器
可编程逐脉冲电流限制
双脉冲抑制
欠压闭锁
推挽配置中的自动对称校正
增强型负载响应特性
软启动功能
关断端子
针对模块化电源系统的并行运行功能
说明
UC1846 控制集成电路 (IC) 在保持最小外部部件数量的同时提供执行定频、电流模式控制机制所需的全部特性。
这个技术的出色性能可在改进的线路稳压、增强型负载响应特性,和一个更简单、易于设计的控制环路中测得。 拓
扑优势在保持电流均流的基础上包含固有逐脉冲电流限制功能、针对推挽转换器的自动对称校正和电源模块的并行
功能。
除了软启动功能外,保护电路还包括内置欠压闭锁和可编程电流限制。 还提供关断功能,此功能启动一个具有自动
重启的完全关断或者将电源锁存。
其它特性包括完全锁存运行,双脉冲抑制和期限调节功能。
在关闭状态下,UC1846 特有低输出。
ORDERING INFORMATION(1)
PACKAGE
DESIGNATOR
PRODUCT
PACKAGE
ORDERABLE PART NUMBER
PACKAGE QUANTITY
UC1846VTD1
UC1846VTD2
100
10
UC1846
TD
Bare die in waffle pack(2)
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Processing is per the Texas Instruments commercial production baseline and is in compliance with the Texas Instruments Quality
Control System in effect at the time of manufacture. Electrical screening consists of DC parametric and functional testing at room
temperature only. Unless otherwise specified by Texas Instruments AC performance and performance over temperature is not
warranted. Visual Inspection is performed in accordance with MIL-STD-883 Test Method 2010 Condition B at 75X minimum.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
English Data Sheet: SGLS409