TPS720xx

V

EN

V

BATT

IN

EN

OUT

GND

V

CORE

1.3 V

1.8 V

Standalone

dc/dc

Converter

or PMU

BIAS

C

BIAS

C

OUT

C

IN

Product

Folder

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Reference

Design

TPS720

SBVS100E – JUNE 2008 – REVISED SEPTEMBER 2015

The TPS720 supports a novel feature in which the

1 Features

output of the LDO regulates under light loads when

1

•

350-mA High-Performance LDO

the IN pin is left floating. The light-load drive current

•

Low Quiescent Current: 38

μA

feature

is

particularly

useful

in

power-saving

•

Excellent Load Transient Response:

applications where the DC-DC converter connected

to the IN pin is disabled but the LDO is still required

•

Excellent Line Transient Response:

to regulate the voltage to a light load.

The TPS720 is stable with ceramic capacitors and

uses an advanced BICMOS fabrication process that

•

Low Noise: 48

yields a dropout of 110 mV at a 350-mA output load.

•

The TPS720 has the unique feature of providing a

•

•

Fast Start-Up Time: 140

μs

output capacitor of 2.2

μF.

•

The TPS720 uses a precision voltage reference and

feedback loop to achieve overall accuracy of 2% over

•

Overcurrent and Thermal Protection

load, line, process, and temperature extremes. An

•

ultra-small DSBGA package makes the TPS720 ideal

for handheld applications. The TPS720 is also

•

Stable with 2.2-

μF Output Capacitor

available in a SON-8 package. This family of devices

•

Available in 1.33 mm × 0.96 mm DSBGA-5 and 2

is fully specified over the temperature range of

mm × 2 mm SON-6 Packages

2 Applications

Device Information(1)

•

Digital Cameras

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Cellular Camera Phones

DSBGA (5)

1.36 mm × 0.96 mm

TPS720

SON (6)

2.00 mm × 2.00 mm

•

Wireless LAN

•

Handheld Products

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

3 Description

Simplified Schematic

The TPS720 family of dual rail, low-dropout linear

regulators (LDOs) offers outstanding ac performance

(PSRR, load and line transient response), while

consuming a very low quiescent current of 38

μA.

LDO draws very low current (on the order of the

quiescent current of the LDO) and can be connected

to any power supply that is equal to or greater than

1.4 V above the output voltage. The main power path

efficiency of the solution in many power-sensitive

high-efficiency, DC-DC step-down regulator.

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.