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3 / 24 page 2002 Aug 23 3 Philips Semiconductors Product specification GreenChipTMII SMPS control IC TEA1533T; TEA1533AT GENERAL DESCRIPTION The GreenChip ™(1)II is the second generation of green Switched Mode Power Supply (SMPS) control ICs operating directly from the rectified universal mains. A high level of integration leads to a cost effective power supply with a very low number of external components. The special built-in green functions allow the efficiency to be optimum at all power levels. This holds for quasi-resonant operation at high power levels, as well as fixed frequency operation with valley switching at medium power levels. At low power (standby) levels, the system operates at a reduced frequency and with valley detection. The proprietary high voltage BCD800 process makes direct start-up possible from the rectified mains voltage in an effective and green way. A second low voltage BICMOS IC is used for accurate, high-speed protection functions and control. Highly efficient and reliable supplies can easily be designed using the GreenChipII control IC. (1) GreenChip is a trademark of Koninklijke Philips Electronics N.V. ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TEA1533T SO14 plastic small outline package; 14 leads; body width 3.9 mm SOT108-1 TEA1533AT |
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