TEA2261屬于集成電路（IC）的ACDC轉(zhuǎn)換器離線開關(guān)。由意法半導(dǎo)體集團制造生產(chǎn)的TEA2261AC DC 轉(zhuǎn)換器，離線開關(guān)該系列是元器件級控制產(chǎn)品，用于構(gòu)建將交流市電轉(zhuǎn)換為直流電（通常電壓大幅降低）的設(shè)備。集成和未集成系統(tǒng)主要開關(guān)元件的器件均包括在內(nèi)。由于高輸入輸出電壓比，以及此類系統(tǒng)中通常需要隔離，這些器件通常與外部變壓器配合使用。盡管通常使用定制變壓器來實現(xiàn)此用途，但也有許多專門用于此用途的庫存產(chǎn)品，請參見“開關(guān)轉(zhuǎn)換器，SMPS 變壓器”標(biāo)題。

■ Positive and Negative Current up to 1.2A and -

2A

■ Low Start-Up Current

■ Direct Drive of the Power Transistor

■ Two Levels Transistor Current Limitation

■ Double Pulse Suppression

■ Soft-Starting

■ Under and Overvoltage Lock-out

■ Automatic Stand-By Mode Recognition

■ Large Power Range Capability in Stand-By

(Burst Mode)

■ Internal PWM Signal Generator

DESCRIPTION

The TEA2260/61 is a monolithic integrated circuit

for the use in primary part of an off-line switching

mode power supply.

All functions required for SMPS control under normal operating, transient or abnormal conditions

are provided.

The capability of working according to the “master-slave” concept, or according to the “primary

regulation” mode makes the TEA2260/61 very

flexible and easy to use. This is particularly true for

TV receivers where the IC provides an attractive

and low cost solution (no need of stand-by auxiliary power supply). See application note AN376/

0490 for detailed information.