TPS62040

TPS62042, TPS62043

TPS62044, TPS62046

SLVS463B − JUNE 2003 − REVISED OCTOBER 2005

1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER

FEATURES

Currents

APPLICATIONS

DESCRIPTION

The TPS6204x family of devices are high efficiency

synchronous step-down dc-dc converters optimized for

battery powered portable applications. The devices are

ideal for portable applications powered by a single Li-Ion

battery cell or by 3-cell NiMH/NiCd batteries. With an

output voltage range from 6.0 V down to 0.7 V, the devices

support low voltage DSPs and processors in PDAs,

pocket PCs, as well as notebooks and subnotebook

computers. The TPS6204x operates at a fixed switching

frequency of 1.25 MHz and enters the power save mode

operation at light load currents to maintain high efficiency

over the entire load current range. For low noise

applications, the devices can be forced into fixed

frequency PWM mode by pulling the MODE pin high. The

TPS6204x supports up to 1.2-A load current.

7

VIN

VIN

EN

MODE

SW

FB

PGND

PGND

SW

GND

2

3

1

4

9

10

5

8

6

TPS6204x

2.5 V to 6 V

C2

22 µF

C1

22 µF

L1

6.2 µH

Typical Application Circuit 1.2-A Output Current

40

45

50

55

60

65

70

75

80

85

90

95

100

0

0.01

0.1

1

10

100

1 k

10 k

MODE = Low

MODE = High

EFFICIENCY

vs

LOAD CURRENT

PRODUCTION DATA information is current as of publication date. Products

conform to specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

www.ti.com

Copyright © 2003 − 2005, Texas Instruments Incorporated

PowerPAD is a trademark of Texas Instruments.