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TEA1721AT/N1 PDF预览

TEA1721AT/N1

更新时间： 2024-10-01 14:19:55
品牌 Logo 应用领域
恩智浦 - NXP 开关光电二极管
页数 文件大小 规格书
14页 196K
描述
IC SWITCHING CONTROLLER, Switching Regulator or Controller

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中文翻译

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TEA1721AT/N1 技术参数

生命周期：Active包装说明：SOP,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.68
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT/VOLTAGE-MODE
标称输入电压：20 VJESD-30 代码：R-PDSO-G7
长度：4.9 mm功能数量：1
端子数量：7最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE座面最大高度：1.75 mm
表面贴装：YES最大切换频率：50.5 kHz
温度等级：INDUSTRIAL端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
宽度：3.9 mmBase Number Matches：1

TEA1721AT/N1 数据手册

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TEA1721AT  
HV start-up flyback controller with integrated MOSFET for 5 W  
applications, 430 Hz burst frequency  
Rev. 2.1 — 7 June 2012  
Product data sheet  
1. Product profile  
1.1 General description  
The TEA1721 is a small and low cost module Switched Mode Power Supply (SMPS)  
controller IC for low power applications (up to 5 W) and operates directly from the rectified  
universal mains input. The device includes a high voltage power switch (700 V) and has  
been optimized for flyback converter topologies to provide high-efficiency over the entire  
load range with ultra-low power consumption in the no-load condition. It provides a circuit  
for start-up directly from the rectified mains voltage without any external bleeder circuits.  
The converter operates as a regulated voltage source from no-load up to the maximum  
output current and operates as current source that delivers the maximum current over a  
broad output voltage range. Using the TEA1721, a low power converter can be built at  
minimum cost and with the minimum number of external components.  
The controller regulates the output voltage with primary-side sensing which eliminates the  
need for an additional secondary feedback circuitry and simplifies the design. At higher  
power levels, a frequency and current control mode is used. It operates with Burst mode  
control at low power levels and no-load condition. The burst mode minimizes audible  
noise and provides an energy saver state which reduces the power consumption in  
no-load condition. The Burst mode frequency of 430 Hz enables no-load power  
consumption below < 10 mW at high mains input.  
1.2 Features and benefits  
Power features:  
Low power SMPS controller with integrated power switch designed for applications up  
to 5 W  
700 V high voltage power switch for global mains operation  
Primary sensing for control of the output voltage without optocoupler and secondary  
feedback circuitry  
Minimizes audible noise in all operation modes  
USB battery charging and Energy Star 2.0 compliant  
Jitter function for reduced EMI  
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