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FEATURES

DESCRIPTION

APPLICATIONS

VI

1.8 V to 3.8 V

TPS62510

PGND

L1

2.2 H

m

C2

22 F

m

C3

22 pF

R1

300 kW

R2

200 kW

Cf

100 nF

Rf 1 W

VO

1.5 V to 1.5 A

C1

22 F

m

SW

FB

PG

AGND

PVIN

7

AVIN

EN

OVT

MODE

10

5

6

8

9

2

1

4

3

95

50

90

80

70

60

85

75

65

55

0.01

0.1

1

10

10 k

100

I - Load Current- mA

L

1 k

V = 1.2 V

O

V = 1.9 V

(Mode Low)

I

V = 3.2 V

(Mode High)

I

V = 2.4 V

(Mode High)

I

V = 1.9 V

(Mode High)

I

V = 2.4 V

(Mode Low)

I

V = 3.2 V

(Mode Low)

I

TPS62510

SLVS651 – MAY 2006

1.5-A, LOW V

•

1.8-V to 3.8-V Input Voltage Range

The TPS62510 family are high-efficiency step-down

converters targeted for operation from a 1.8-V to

•

Up to 96% High Efficiency Synchronous

3.8-V input voltage rail, ideally suited for 2-cell

Step-Down Converter

Alkaline or NiMHd applications. The TPS62510 is

•

1.5-MHz Fixed Frequency PWM Operation

also ideal as a point-of-load regulator running from a

•

1% Output Voltage Accuracy in Fixed

fixed 3.3-V, 2.5-V or 1.8-V input voltage rail. The

Frequency PWM Mode

converter operates in fixed frequency PWM mode

switching at 1.5 MHz with the MODE pin high.

•

Power Save Mode Operation for High

Pulling the MODE pin low enables the high efficiency

Efficiency Over the Entire Load Current

mode. In high efficiency mode, the device operates

Range

with a 1.5 MHz fixed frequency PWM at nominal load

•

22-

µA Quiescent Current

current, and automatically enters the Power Save

•

Fixed and Adjustable Output Voltage

Mode at light load currents. For maximum system

reliability, the converter features Output Voltage

•

Output Voltage Tracking (OVT) for Reliable

Tracking using the OVT pin to allow sequencing, and

Sequencing

to allow for the output voltage to track an external

•

Available in a 10-Pin QFN (3 x 3 mm) Package

voltage applied to this pin.

•

Portable Devices (Mobile Phone, PDA)

•

2-Cell NiMHd/Alkaline Applications

•

Hard Disc Drives

•

Point-Of-Load Regulation

•

Notebook Computers

•

WiMAX and WLAN Applications

Figure 1. Typical Application

Figure 2. Efficiency vs Load Current

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.

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006, 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.