NXP Semiconductors TEA1401T
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. The basic function is a galvanically isolated, combined current and voltage source.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. QUICK REFERENCE DATA SYMBOL V20 I20 fsw I1 PARAMETER output voltage at pin 20 (DRAIN) current in MOS switch input current at pin 1 (Vin), from the high input voltage. VAT can supply from the low voltage auxiliary winding CONDITIONS 20 times peak value VAT < 10 V (peak) VAT > 10 V (peak); fsw = 90 kHz VAT > 10 V (peak); fsw = 150 kHz VAT > 10...