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