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TEA1205

High efficiency DC/DC converter

Philips Electronics 

Philips Semiconductors

High efficiency DC/DC converter

Preliminary specification

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

PACKAGE

DESCRIPTION

plastic small outline package; 8 leads; body width 3.9 mm

VERSION

SOT96-1

1998 Mar 24

2

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