Intersil ISL9305IRTHWBNLZ-T

Description
The ISL9305H is an integrated mini Power Management IC (mini-PMIC) for powering low-voltage microprocessors or applications using a single Li-Ion or Li-Polymer cell battery to power multiple voltage rails. It integrates two high-efficiency 3MHz synchronous step-down converters (DCD1 and DCD2) and two low-input, low-dropout linear regulators (LD01 and LD02).

Features
Dual 1.5A, Synchronous Step-down Converters and Dual 300mA, General-purpose LDOs
Input Voltage Range:
DCD1/DCD2: 2.5V to 5.5V
LD01/LD02: 1.5V to 5.5V
400kb/s I²C-Bus Series Interface Transfers the Control Data Between the Host Controller and the ISL9305H
Adjustable Output Voltage:
DCD1/DCD2: 0.8V to VIN
Fixed Output I²C Programmability: 0.825V to 3.6V at 25mV/step
LD01/LD02: 0.9V to 3.3V
LD01/LD02 Output Voltage I²C Programmability at 50mV/Step
50µA IQ (Typ) with DCD1/DCD2 in Skip Mode; 20µA IQ (Typ) for Each Enabled LDO
On-the-fly C Programming of DC/DC and LDO Output Voltages
DCD1/DCD2 I²C Programmable Skip Mode Under Light Load or Forced Fixed Switching Frequency PWM Mode
Small, Thin 4mmx4mm TQFN Package

Applications
Cellular Phones, Smart Phones
PDAs, Portable Media Players, Portable Instruments
Single Li-Ion/Li-Polymer Battery-Powered Equipment
DSP Core Power