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TEA1401T Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. TEA1401T
Description  Power plug for the universal mains
Download  20 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TEA1401T Datasheet(HTML) 2 Page - NXP Semiconductors

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1997 Mar 07
2
Philips Semiconductors
Preliminary specification
Power plug for the universal mains
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
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V20
output voltage at pin 20 (DRAIN)
20 times
−−
625
V
I20
current in MOS switch
peak value
−−
1A
fsw
operating switching frequency range CCPFM = 470 pF
5
150
kHz
I1
input current at pin 1 (Vin), from the
high input voltage. VAT can supply
from the low voltage auxiliary
winding
VAT < 10 V (peak)
−−
3mA
VAT > 10 V (peak);
fsw = 90 kHz
430
530
µA
VAT > 10 V (peak);
fsw = 150 kHz
560
660
µA
I17
average input current at pin 17 (VAT)VAT < 10 V (peak)
−−
300
µA
VAT > 10 V (peak)
−−
3mA
Tamb
operating ambient temperature
−20
+85
°C
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TEA1401T
SO20
plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1


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