TPS650231

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS650231 SLVSAE3A – AUGUST 2010 – REVISED JANUARY 2016 TPS650231 Power Management IC for Li-Ion Powered Systems 1 Features 1 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 2 Applications Smart Phones Netbooks and MIDs Portable Media Players 3 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 savin...