CSP-6

VIN

SW

FB

MODE

EN

GND

V

OUT

1.8V@1000mA

C

4.7

F

I

m

TPS62661

L

0.47

H

m

C

4.7

F

O

m

V

BAT

3.0V..5.5V

0

10

20

30

40

50

60

70

80

90

100

0.1

1

10

100

1000

I

-LoadCurrent-mA

O

0

50

100

150

200

250

300

350

400

450

500

PowerLoss

PFM/PWMOperation

Efficiency

PFM/PWMOperation

V =3.6V,

V =1.8V

I

O

TPS6266x

www.ti.com

SLVS871A – FEBRUARY 2010 – REVISED MARCH 2010

1000-mA, 6-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER

IN CHIP SCALE PACKAGING

Check for Samples: TPS6266x

1

FEATURES

DESCRIPTION

2

•

91% Efficiency at 6MHz Operation

The

TPS6266x

device

is

a

high-frequency

•

31mA Quiescent Current

synchronous step-down dc-dc converter optimized for

•

battery-powered portable applications. Intended for

•

6MHz Regulated Frequency Operation

low-power applications, the TPS6266x supports up to

1000mA peak load current, and allows the use of low

•

Best in Class Load and Line Transient

cost chip inductor and capacitors.

•

±2% Total DC Voltage Accuracy

With a wide input voltage range of 2.3V to 5.5V, the

•

Automatic PFM/PWM Mode Switching

device supports applications powered by Li-Ion

•

Low Ripple Light-Load PFM Mode

batteries with extended voltage range. Different fixed

•

Fast Turn-On Time, <60-ms Start-Up Time

voltage output versions are available from 1.2V to

2.3V.

•

Integrated Active Power-Down Sequencing

(Optional)

The TPS6266x operates at a regulated 6-MHz

switching frequency and enters the power-save mode

•

Current Overload and Thermal Shutdown

operation at light load currents to maintain high

Protection

efficiency over the entire load current range.

•

Three Surface-Mount External Components

Required (One MLCC Inductor, Two Ceramic

The PFM mode extends the battery life by reducing

the quiescent current to 31mA (typ) during light load

Capacitors)

and

standby

operation.

For

noise-sensitive

•

Complete Sub 1-mm Component Profile

applications, the device can be forced into fixed

Solution

frequency PWM mode by pulling the MODE pin high.

•

In the shutdown mode, the current consumption is

reduced to less than 1mA.

•

Available in a 6-Pin NanoFree™ (CSP)

The TPS6266x is available in an 6-pin chip-scale

APPLICATIONS

package (CSP).

•

Cell Phones, Smart-Phones

•

PDAs, Pocket PCs

•

Portable Hard Disk Drives

•

DC/DC Micro Modules

Figure 1. Smallest Solution Size Application

Figure 2. Efficiency vs Load Current

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

NanoFree is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2010, 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.