LDO1

1 µF

1.2V-3.3V

@300 mA

1 µF

1.2V-3.3V

@300 mA

VDD

1.2V-3.3V

@300 mA

1 µF

LDO3

1 µF

0.8V-2.85V

@300 mA

LDO4

LDO5

1 µF

1.2V-3.3V

@300 mA

LDO2

A-type

LDO1

D-type

LDO3

A-type

LDO4

LO-type

LDO5

D-type

VBATT

2.2 µF

2.2 µF

LP8720

Voltage

Reference

Thermal

Shutdown

2.2 µF

LDO2

0.8V...2.3V

@400mA

Buck

10 µF

2.2 µH

SW

FB

GNDB

VINB

10 µF

VBATT

10k

1.5k

1.5k

VSI

SDA

IRQ_N

SCL

EN

DVS

Serial Interface

and

Control

VBATT

DEFSEL

VBATT

IDSEL

GND

LP8720

www.ti.com

SNVS575B – JULY 2008 – REVISED MAY 2013

LP8720 One Step-Down DC-DC and Five Linear Regulators with I2C-Compatible Interface

Check for Samples: LP8720

1

FEATURES

APPLICATIONS

2

•

5 Low Noise LDO’s for up to 300 mA

•

Cellular Handsets

•

One High-Efficiency Synchronous Magnetic

•

Portable Hand-Held Products

Buck Regulator, IOUT 400 mA

DESCRIPTION

–

High Efficiency PFM Mode @Low IOUT

The LP8720 is a multi-function, programmable Power

–

Auto Mode PFM/PWM Switch

Management Unit, optimized for sub block power

–

Low Inductance 2.2 µH @ 2 MHz Clock

requirement solutions. This device integrates one

–

Dynamic Voltage Scale Control

highly efficient 400 mA step-down DC-DC converter

with Dynamic Voltage Scale (DVS), five low-noise low

•

I2C-Compatible Interface for the Controlling of

dropout (LDO) voltage regulators, and a 400 KHz I2C-

Internal Registers

compatible interface to allow a host controller access

•

20-Bump 2.5 x 2.0 mm DSBGA Package

to the internal control registers of the LP8720.

Additionally, the LP8720 features programmable

KEY SPECIFICATIONS

power-on sequencing.

•

Programmable VOUT from 0.8V to 2.3V on DC-

LDO regulators provide high PSRR and low noise

DC

ideally suited for supplying power to both analog and

digital loads. The package will be the smallest 2.5

•

Automatic Soft Start on DC-DC

mm x 2.0 mm 20-bump DSBGA package.

•

200 mV Typ Dropout Voltage at 300 mA on

LDO’s

•

2% (Typ) Output Voltage Accuracy on LDO’s

Typical Application Diagram

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

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008–2013, 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.