1FEATURES

2? 5 Low Noise LDO’s for up to 300 mA

? One High-Efficiency Synchronous Magnetic

Buck Regulator, IOUT 400 mA

– High Efficiency PFM Mode @Low IOUT

– Auto Mode PFM/PWM Switch

– Low Inductance 2.2 μH @ 2 MHz Clock

– Dynamic Voltage Scale Control

? I2C-Compatible Interface for the Controlling of

Internal Registers

? 20-Bump 2.5 x 2.0 mm DSBGA Package

KEY SPECIFICATIONS

? Programmable VOUT from 0.8V to 2.3V on DC-

DC

? Automatic Soft Start on DC-DC

? 200 mV Typ Dropout Voltage at 300 mA on

LDO’s

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

APPLICATIONS

? Cellular Handsets

? Portable Hand-Held Products

DESCRIPTION

The LP8720 is a multi-function, programmable Power

Management Unit, optimized for sub block power

requirement solutions. This device integrates one

highly efficient 400 mA step-down DC-DC converter

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

dropout (LDO) voltage regulators, and a 400 KHz I2Ccompatible

interface to allow a host controller access

to the internal control registers of the LP8720.

Additionally, the LP8720 features programmable

power-on sequencing.

LDO regulators provide high PSRR and low noise

ideally suited for supplying power to both analog and

digital loads. The package will be the smallest 2.5

mm x 2.0 mm 20-bump DSBGA package.