V

IN

GND

V

OUT

C2

L1

Totalarea

12mm²

1.8V

V

OUT

2.05V-6V

V

IN

2.2

F

m

C

IN

L

1/2.2

H

m

C

4.7

F

OUT

m

TPS62231

VIN

EN

MODE

SW

FB

GND

TPS62230, TPS62231, TPS62232, TPS62233

TPS62234, TPS62235, TPS62236, TPS62237

TPS62238, TPS62239, TPS622310, TPS622311

www.ti.com

SLVS941B – APRIL 2009 – REVISED DECEMBER 2009

2 MHz / 3 MHz Ultra Small Step Down Converter in 1x1.5 SON Package

Check for Samples: TPS62230, TPS62231, TPS62232, TPS62233,

TPS62234, TPS62235, TPS62236, TPS62237, TPS62238, TPS62239, TPS622310, TPS622311

1

FEATURES

DESCRIPTION

•

2 MHz / 3 MHz Switch Frequency

•

Up to 94% Efficiency

The TPS6223X device family is a high frequency

synchronous step down DC-DC converter optimized

•

Output Peak Current up to 500mA

for battery powered portable applications. It supports

•

Excellent AC and Transient Load Regulation

up to 500mA output current and allows the use of tiny

•

High PSRR (up to 90dB)

and low cost chip inductors and capacitors.

•

Small External Output Filter Components 1

μH/

With a wide input voltage range of 2.05V to 6V the

4.7

μF

device supports applications powered by Li-Ion

batteries with extended voltage range. The minimum

•

input voltage of 2.05V allows as well the operation

•

Optimized Power Save Mode For Low Output

from Li-primary or two alkaline batteries. Different

Ripple Voltage

fixed output voltage versions are available from 1.2V

•

Forced PWM Mode Operation

to 2.5V.

•

Typ. 22

μA Quiescent Current

The TPS6223X series features switch frequency up

•

100% Duty Cycle for Lowest Dropout

to 3.8MHz. At medium to heavy loads, the converter

operates in PWM mode and automatically enters

•

Power Save Mode operation at light load currents to

•

maintain high efficiency over the entire load current

•

Supports 0.6 mm Maximum Solution Height

range.

•

Soft Start with typ. 100

μs Start Up Time

Because

of

its

excellent

PSRR

and

AC

load

regulation performance, the device is also suitable to

APPLICATIONS

replace linear regulators to obtain better power

•

LDO Replacement

conversion efficiency.

•

Portable Audio, Portable Media

The Power Save Mode in TPS6223X reduces the

•

Cell Phones

quiescent current consumption down to 22

μA during

light load operation. It is optimized to achieve very

•

Low Power Wireless

low output voltage ripple even with small external

•

Low Power DSP Core Supply

component and features excellent ac load regulation.

•

Digital Cameras

For very noise sensitive applications, the device can

be forced to PWM Mode operation over the entire

load range by pulling the MODE pin high. In the

shutdown mode, the current consumption is reduced

to less than 1

μA. The TPS6223X is available in a 1 ×

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 © 2009, 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.