October 2003

1/11

TEA2261/0

SWITCH MODE POWER SUPPLY CONTROLLER

s

Positive and Negative Current up to 1.2A and -

2A

s

Low Start-Up Current

s

Direct Drive of the Power Transistor

s

Two Levels Transistor Current Limitation

s

Double Pulse Suppression

s

Soft-Starting

s

Under and Overvoltage Lock-out

s

Automatic Stand-By Mode Recognition

s

Large Power Range Capability in Stand-By

(Burst Mode)

s

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 nor-

mal operating, transient or abnormal conditions

are provided.

The capability of working according to the “mas-

ter-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 auxilia-

ry power supply). See application note AN376/

0490 for detailed information.

Figure 1. Pin Connections

BATWING DIP16

(Plastic Package)

ORDER CODES:

TEA2261/0

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

IS

IN

GND

GND

E

S

C2

TRANSFORMER DEMAGNETIZATION SENSING INPUT

SECONDARY PULSES INPUT

POWER TRANSISTOR CURRENT LIMITATION INPUT

GROUND

GROUND

ERROR AMPLIFIER INPUT (INVERTING)

ERROR AMPLIFIER OUTPUT

OVERLOAD INTEGRATION CAPACITOR

V+

OUT

GND

GND

R0

C0

C1

POWER SUPPLY

POSITIVE OUTPUT STAGE SUPPLY

POWER OUTPUT

GROUND

GROUND

OSCILLATOT RESISTOR

OSCILLATOR CAPACITOR

SOFT-START CAPACITOR

1