TEA1205AT

INTEGRATED CIRCUITS DATA SHEET TEA1205AT High efficiency DC/DC converter Preliminary specification File under Integrated Circuits, IC03 1998 Mar 24 Philips Semiconductors Preliminary specification High efficiency DC/DC converter 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. ORDERING INFORMATION PACKAGE TYPE NUMBER NAME TEA1205AT SO8 DESCRIPTION plastic small outline package; 8 leads; body width 3.9 mm GENERAL DESCRIPTION TEA1205AT 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 Puls...