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.