TEA1206 データシートの表示（PDF） - Philips Electronics

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TEA1206

High efficiency DC/DC converter

Philips Electronics 

Philips Semiconductors

High efficiency DC/DC converter

Preliminary specification

TEA1206T

FEATURES

• Fully integrated DC/DC converter circuit

• Up-or-down conversion

• Start-up from 1.8 V input

• Adjustable output voltage

• High efficiency over large load range

• Power handling capability up to 1 A continuous

average current

• 600 kHz switching frequency

• Low quiescent power consumption

• Synchronizes to external 9 to 20 MHz clock

• True current limit for Li-ion battery compatibility

• Up to 100% duty cycle in down mode

• Undervoltage lockout

• 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 TEA1206T (see Fig.1) is a fully integrated DC/DC

converter circuit. 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 fully

synchronous rectification. The device operates at a high

590 kHz switching frequency which enables the use of

minimum size external components. Deadlock is

prevented by an on-chip undervoltage lockout circuit.

Compatibility with Li-ion batteries is guaranteed by an

accurate current limit function.

ORDERING INFORMATION

TYPE NUMBER

TEA1206T

NAME

SO8

PACKAGE

DESCRIPTION

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

VERSION

SOT96-1

1999 Sep 16

2

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