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.