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.