TPS62290DRV

V

2.7Vto6.3V

IN

R

360k

1

W

V

1.8V,

1000mA

OUT

R

180k

2

W

VIN

GND

EN

FB

SW

COUT

MODE

C

10 F

IN

m

L1

2.2 H

m

C

22pF

1

30

40

50

60

70

80

90

100

0.00001 0.0001

0.001

0.01

0.1

1

I -OutputCurrent- A

O

V =4.2V

IN

V =3.8V

IN

V =5V

IN

V =4.5V

IN

V

=3.3V,

MODE=GND,

L =2.2 H

OUT

m

TPS62290-Q1, TPS62291-Q1, TPS62293-Q1

www.ti.com

SLVSAI5 – SEPTEMBER 2010

1-A Step Down Converter in 2 x 2 SON Package

Check for Samples: TPS62290-Q1, TPS62291-Q1, TPS62293-Q1

1

FEATURES

DESCRIPTION

•

Qualified for Automotive Applications

•

High Efficiency Step Down Converter

The TPS6229x-Q1 is a highly efficient synchronous

step

down

dc-dc

converters

optimized

for

•

Output Current up to 1000 mA

battery-powered portable applications. TPS6229x-Q1

•

provides up to 1000-mA output current from a single

•

2.25 MHz Fixed Frequency Operation

Li-Ion cell.

•

Power Save Mode at Light Load Currents

With an input voltage range of 2.3 V to 6 V, the

•

Output Voltage Accuracy in PWM mode ±1.5%

device supports batteries with extended voltage

range and are ideal to power portable applications

•

Fixed Output Voltage Options

like mobile phones and other portable equipment.

•

Typ. 15-mA Quiescent Current

The

TPS6229x-Q1

operates

at

2.25-MHz

fixed

•

100% Duty Cycle for Lowest Dropout

switching frequency and enters Power Save Mode

•

Voltage Positioning at Light Loads

operation at light load currents to maintain high

•

Available in a 2 × 2 × 0,8 mm SON Package

efficiency over the entire load current range.

The Power Save Mode is optimized for low output

voltage ripple. For low noise applications, the device

can be forced into fixed frequency PWM mode by

pulling the MODE pin high. In the shutdown mode,

the current consumption is reduced to less than 1 mA.

The TPS6229x-Q1 allows the use of small inductors

and capacitors to achieve a small solution size.

The TPS6229x-Q1 is available in a 2-mm × 2-mm

6-pin 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.

UNLESS

OTHERWISE

NOTED

this

document

contains

Copyright © 2010, Texas Instruments Incorporated

PRODUCTION DATA information 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.