1

FEATURES

DESCRIPTION

APPLICATIONS

GND

EN

FB

SW

TPS62243DRV

2.2µH

4.7µF

10µF

Upto300mA

MODE

0

10

20

30

40

50

60

70

80

90

100

0.01

0.1

1

10

100

1000

I

-OutputCurrent-mA

O

V =2V

I

V =4.5

I

V =3.6

I

V =4.5

I

V =3V

I

V =2.7

I

V =2V

I

V =1.8V,

MODE=GND,

L =2.2 H,

DCR110m

O

m

TPS62240, TPS62242, TPS62243

SLVS762B – JUNE 2007 – REVISED SEPTEMBER 2007

www.ti.com

2.25 MHz 300 mA Step Down Converter in 2x2SON/TSOT23 Package

23

• High Efficiency Step Down Converter

• Output Current up to 300 mA

The

TPS62240

device

is

a

high

efficiency

synchronous step down dc-dc converter optimized for

• V

battery powered portable applications. It provides up

With Extended Voltage Range

to 300 mA output current from a single Li-Ion cell and

• 2.25 MHz Fixed Frequency Operation

is ideal to power portable applications like mobile

• Power Save Mode at Light Load Currents

phones and other portable equipment..

• Output Voltage Accuracy in PWM Mode ±1.5%

With an input voltage range of 2 V to 6 V, the device

supports applications powered by Li-Ion batteries with

• Adjustable Output Voltage from 0.6 V to V

IN

extended voltage range, two- and three-cell alkaline,

• Typical 15 µA Quiescent Current

3.3-V and 5-V input voltage rails.

• 100% Duty Cycle for Lowest Dropout

The TPS62240 operates at 2.25 MHz fixed switching

• Available in a TSOT23 and 2×2×0,8 mm SON

frequency and enters Power Save Mode operation at

• Allows < 1 mm Solution Height

light load currents to maintain high efficiency over the

entire load current range.

The Power Save Mode is optimized for low output

• Bluetooth™ Headset

voltage ripple. For low noise applications, the device

• Cell Phones, Smart-phones

can be forced into fixed frequency PWM mode by

pulling the MODE pin high. In the shutdown mode,

• WLAN

the current consumption is reduced to less than 1

µA.

• PDAs, Pocket PCs

TPS62240 allows the use of small inductors and

• Low Power DSP Supply

capacitors to achieve a small solution size.

• Portable Media Players

The TPS62240 is available in a 5-pin TSOT23 and

• Digital Cameras

6-pin 2mm

×2mm SON package.

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.

2

PowerPAD is a trademark of Texas Instruments.

3

Bluetooth is a trademark of Bluetooth SIG, Inc..

PRODUCTION DATA information is current as of publication date.

Copyright © 2007, 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.