General description

The TEA1733T is a low cost Switched Mode Power Supply (SMPS) controller IC intended for flyback topologies. It operates in fixed frequency mode. To reduce ElectroMagnetic Interference (EMI), frequency jitter has been implemented. Slope compensation is integrated for Continuous Conduction Mode (CCM) operation.

Features

SMPS controller IC enabling low-cost applications

Large input voltage range (12 V to 30 V)

Very low supply current during start-up and restart (typically 10 ?A)

Low supply current during normal operation (typically 0.5 mA without load)

Overpower or high/low line compensation

Adjustable overpower time-out

Adjustable overpower restart timer

Fixed switching frequency with frequency jitter to reduce EMI

Frequency reduction with fixed minimum peak current to maintain high-efficiency at low output power levels

Slope compensation for CCM operation

Low and adjustable OverCurrent Protection (OCP) trip level

Adjustable soft start operation

Two protection inputs (e.g. for input UVP and OVP, OTP and output OVP)

IC overtemperature protection

Applications

All applications requiring efficient and cost-effective power supply solutions up to 75 W.

TEA1733T屬于集成電路（IC） > AC DC 轉(zhuǎn)換器，離線開關(guān)。恩智浦半導(dǎo)體公司制造生產(chǎn)的TEA1733TAC 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。