Description
●The TPS650231 device is an integrated power management IC for applications powered by one Li-Ion or Li-Polymer cell, and which requires multiple power rails. The TPS650231 provides three highly efficient step-down converters targeted at providing the core voltage, peripheral, I/O, and memory rails in a processor-based system. The core converter allows for on-the-fly voltage changes through serial interface, allowing the system to implement dynamic power savings.
●Features
●• 1.7-A, 90% Efficient Step-Down Converter for Processor Core (VDCDC1)
●• 1.2-A, Up to 95% Efficient Step-Down Converter for System Voltage (VDCDC2)
●• 0.8-A, 92% Efficient Step-Down Converter for Memory Voltage (VDCDC3)
●• 30-mA LDO and Switch for Real-Time Clock (VRTC)
●• 2 × 200-mA General-Purpose LDO
●• Dynamic Voltage Management for Processor Core
●• Preselectable LDO Voltage Using Two Digital Input Pins
●• Externally Adjustable Reset Delay Time
●• Battery Backup Functionality
●• Separate Enable Pins for Inductive Converters
●• I2C™-Compatible Serial Interface
●• 85-μA Quiescent Current
●• Low-Ripple PFM Mode
●• Thermal Shutdown Protection
●• Available in 40-Pin, 5-mm × 5-mm VQFN (RSB) or 49-Ball, 3-mm × 3-mm DSBGA (YFF) Package
●Applications
●• Smart Phones
●• Netbooks and MIDs
●• Portable Media Players
