1

FEATURES

APPLICATIONS

DESCRIPTION

0

10

20

30

40

50

60

70

80

90

100

0.01

0.1

1

10

100

1000

V

=2.7V

IN

V

=3V

IN

V

=3.6V

IN

V

=4.5V

IN

V

=1.8V

MODE=GND

L =2.2 H

DCR110mR

OUT

m

I

– OutputCurrent – mA

OUT

GND

EN

FB

SW

TPS62560DRV

L

C

10 F

OUT

m

C

4.7 F

IN

m

2.2 H

m

C

22pF

1

V

=2.5Vto5.5V

IN

Upto600mA

MODE

TPS62560

TPS62561, TPS62562

2.25-MHz, 600-mA Step-Down Converter in TSOT and 2- × 2- × 0,8-mm SON Package

With a wide input voltage range of 2.5 V to 5.5 V, the

devices support applications powered by Li-Ion

• High-Efficiency Step-Down Converter

batteries with extended voltage range, two- and

• Output Current up to 600 mA

three-cell alkaline batteries, 3.3-V and 5-V input

voltage

rails.

They

operate

at

2.25-MHz

fixed

• Wide V

switching frequency and enter power-save mode

Batteries With Extended Voltage Range

operation at light load currents to maintain high

• Adjustable and Fixed Output-Voltage Options

efficiency over the entire load-current range.

• 2.25-MHz Fixed-Frequency Operation

The

power-save

mode

is

optimized

for

low

• Power-Save Mode at Light Load Currents

output-voltage ripple. For low-noise applications, the

• Output Voltage Accuracy in PWM Mode ±2.5%

devices can be forced into the fixed-frequency PWM

mode

by

pulling

the

MODE

terminal

high.

In

• Typical 15-µA Quiescent Current

shutdown mode, the current consumption is reduced

• 100% Duty Cycle for Lowest Dropout

to less than 1

µA. Switching at 2.25-MHz allows the

• Soft Start

use of small inductors and capacitors to achieve a

small solution size.

• Voltage Positioning at Light Loads

• Available in a Small TSOT, and

Operating in a forced fixed-frequency PWM mode,

2-mm × 2-mm × 0,8-mm SON Package

the TPS62561 devices allow simple filtering of the

switching

frequency,

e.g.,

for

noise-sensitive

• Allows < 1-mm Solution Height

applications.

TPS62560 and TPS62562 are available in a 2-mm ×

2-mm 6-terminal SON package, whereas TPS62561

• PDAs, Pocket PCs, Portable Media Players

is

available

in

a

5-terminal

TSOT23

package.

• Low-Power DSP Supply

Providing

a

fixed-output-voltage

version,

this

• POL Applications

TPS62562 enables a even smaller solution size with

no external resistors needed.

The TPS6256x devices are efficient synchronous

step-down

dc-dc

converters

optimized

for

battery-powered applications. They provide up to

600-mA output current from a single Li-Ion cell and

are ideal to power mobile phones and other portable

applications.

1

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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.