LP8720

LP8720 One Step-Down DC/DC and Five Linear Regulators with I2C Compatible Interface November 30, 2009 LP8720 One Step-Down DC/DC and Five Linear Regulators with I2C Compatible Interface General Description The LP8720 is a multi-function, programmable Power Management Unit, optimized for sub block power requirement solution. 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 I2C-compatible interface to allow a host controller access to the internal control registers of the LP8720. The LP8720 additionally 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 micro SMD 20–bump package. Features 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 micro SMD package ■ 5 Low Noise LDO’s for up to 300 mA ■ One high-efficiency Synchronous Magnetic Buck 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 Typical Applicati...