ISL80083 is an integrated mini Power Management IC (mini-PMIC) for powering low-voltage microprocessor, or applications using a single Li-Ion or Li-Polymer cell battery to power multiple voltage rails. ISL80083 integrates a high-efficiency 2.5MHz synchronous step-down converter, a

low-input low-dropout linear regulator, 33MHz oscillator, level shift, and input supply select.

Features

• 800mA synchronous step-down converter and 300mA, general-purpose LDO

• 400kb/s I2C-bus series interface transfers the control data between the host controller and the ISL80083

• Fixed SMPS output voltage I2C programmability

- At 25mV/step. . . . . . . . . . . . . . . . . . . . . . 0.625V to 2.225V

•LDO output voltage I2C programmability

- At 50mV/step. . . . . . . . . . . . . . . . . . . . . . . . . . . 0.9V to 3.6V

• 33MHz oscillator

• Level shift from 1.8V to 3V with enable

•Input select

•Switcher I2C programmable skip mode under light load or forced fixed switching frequency PWM mode