TEA1205AT Datasheet
High Efficiency DC/DC Converter
Download: TEA1205AT Datasheet 
TEA1205AT
High Efficiency DC/DC Converter
INTEGRATED CIRCUITS
DATA SHEET
TEA1205AT High efficiency DC/DC converter
Preliminary speci cation File under Integrated Circuits, IC03
1998 Mar 24
Philips Semiconductors
High ef ciency DC/DC converter
Preliminary speci cation
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 TEA1205AT
NAME SO8