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TEA1205AT Scheda tecnica(PDF) 2 Page - NXP Semiconductors |
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TEA1205AT Scheda tecnica(HTML) 2 Page - NXP Semiconductors |
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2 / 16 page  1998 Mar 24 2 Philips Semiconductors Preliminary specification High efficiency DC/DC converter TEA1205AT FEATURES • Fully integrated DC/DC converter circuit • Up conversion in 2 different modes • High efficiency over wide load range • Synchronizes to external high frequency clock • Output power up to 3.6 W (typ.) continuous, 8 W in GSM burst mode • Low quiescent power consumption • True current limit for Li-ion battery compatibility • Shut-down function • 8-pin SO package. APPLICATIONS • Cellular and cordless phones PDAs and others • Supply voltage source for low-voltage chip sets • Portable computers • Battery backup supplies • Cameras. GENERAL DESCRIPTION The TEA1205AT (see Fig.1) is a fully integrated DC/DC converter circuit using the minimum amount of external components. It is intended to be used to supply electronic circuits with supply voltages of 3.3 or 5.5 V from 2, 3 or 4 NiCd cell batteries or one Li-ion battery at an output power level up to 3.6 W (typ.) continuously, or 8 W in GSM TDMA (1 : 8) burst mode. The switching frequency of the converter can be synchronized to an external high-frequency clock. Efficient, compact and dynamic power conversion is achieved using a novel, digitally controlled Pulse Width and Frequency Modulation (PWFM) like control concept, integrated low RdsON CMOS power switches with low parasitic capacitances and synchronous rectification. ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TEA1205AT SO8 plastic small outline package; 8 leads; body width 3.9 mm SOT96-1 |
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