TEA1401T View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

TEA1401T

Power plug for the universal mains

Philips Electronics 

Philips Semiconductors

Power plug for the universal mains

Preliminary specification

TEA1401T

FEATURES

• Designed for compact power plugs supplying up to 20 W

• Integrated high-voltage power DMOS FET 625 V/1 A

• Operates from all mains supplies (90 to 280 V AC)

• Major design: current regulation at the primary side

(no opto-coupler, no secondary electronics)

• Low external/peripheral component count

• Combines accurate constant-voltage source (for supply)

and accurate constant-current source (for charging) in

one IC

• Foldback feature

• Requires simple input filter as a result of good EMC

design

• Overshoot protection (output voltage)

• Protects against under-voltage input, over-current and

over-temperature

• 20-pin SO medium-power package.

GENERAL DESCRIPTION

The TEA1401T is a Self Oscillating Power Supply (SOPS)

controller IC that operates directly from the rectified

universal mains. It is implemented in the BCD power logic

750 V process and includes the high voltage power switch

making an integrated single-switch flyback converter.

Dedicated circuitry for high power efficiency is built-in,

which makes a slim-line electronic power plug concept

possible.

The basic function is a galvanically isolated, combined

current and voltage source. No electronics are required at

the secondary side of the transformer. Implementation of

the TEA1401T renders a simple, small and accurate

battery charger system. The TEA1401T is capable of self

starting directly from the high voltage mains line.

QUICK REFERENCE DATA

SYMBOL

V20

I20

fsw

I1

I17

Tamb

PARAMETER

CONDITIONS

output voltage at pin 20 (DRAIN) 20 times

current in MOS switch

peak value

operating switching frequency range CCPFM = 470 pF

input current at pin 1 (Vin), from the

high input voltage. VAT can supply

from the low voltage auxiliary

winding

VAT < 10 V (peak)

VAT > 10 V (peak);

fsw = 90 kHz

VAT > 10 V (peak);

fsw = 150 kHz

average input current at pin 17 (VAT) VAT < 10 V (peak)

VAT > 10 V (peak)

operating ambient temperature

MIN.

−

−

5

−

−

TYP.

−

−

−

−

430

MAX. UNIT

625 V

1

A

150 kHz

3

mA

530 µA

−

560 660 µA

−

−

−

−

−20 −

300 µA

3

mA

+85 °C

ORDERING INFORMATION

TYPE

NUMBER

TEA1401T

NAME

SO20

PACKAGE

DESCRIPTION

plastic small outline package; 20 leads; body width 7.5 mm

VERSION

SOT163-1

1997 Mar 07

2

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