1.

General description

The TEA1791AT is a member of the new generation of Synchronous Rectifier (SR)

controller ICs for switched mode power supplies. Its high level of integration allows the

design of a cost-effective power supply with a very low number of external components.

The TEA1791AT is a controller IC dedicated for synchronous rectification on the

secondary side of discontinuous conduction mode and quasi-resonant flyback converters.

The TEA1791AT is fabricated in a Silicon On Insulator (SOI) process.

2.

Features and benefits

2.1 Distinctive features

Accurate synchronous rectification functionality

Wide supply voltage range (8.5 V to 38 V)

High level of integration, resulting in a very low external component count

2.2 Green features

Low current consumption

High system efficiency from no load to full load

2.3 Protection features

Undervoltage protection

3.

Applications

The TEA1791AT is intended for adapters. The device can also be used in all other

discontinuous conduction mode systems and quasi-resonant flyback systems that

demand a highly efficient and cost-effective solution.

4.

Ordering information

TEA1791AT

GreenChip synchronous rectifier controller

Rev. 01 — 7 June 2010

Product data sheet

Table 1.

Ordering information

Type number

Package

Name

Description

Version

TEA1791AT/N1

SO8

plastic small outline package; 8 leads; body width 3.9 mm

SOT96-1