TPS65023 Status:ACTIVE

Product Information

Features

• 1.5 A, 90% Efficient Step-Down Converter for Processor Core (VDCDC1)
• 1.2 A, Up to 95% Efficient Step-Down Converter for System Voltage (VDCDC2)
• 1.0 A, 92% Efficient Step-Down Converter for Memory Voltage (VDCDC3)
• 30 mA LDO/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
• 40 Pin, 5 mm × 5 mm QFN Package
• APPLICATIONS
  • Digital Media Players
  • Internet Audio Player
  • Digital Still Camera
  • Digital Radio Player
  • Supply DaVinci™ DSP Family Solutions

DaVinci, PowerPAD are trademarks of Texas Instruments.
I2C is a trademark of Philips Electronics.

Description

The TPS65023 is an integrated Power Management IC for applications powered by one Li-Ion or Li-Polymer cell, and which require multiple power rails. The TPS65023 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 via serial interface, allowing the system to implement dynamic power savings. All three step-down converters enter a low-power mode at light load for maximum efficiency across the widest possible range of load currents. The TPS65023 also integrates two general-purpose 200 mA LDO voltage regulators, which are enabled with an external input pin. Each LDO operates with an input voltage range between 1.5 V and 6.5 V, allowing them to be supplied from one of the step-down converters or directly from the battery. The default output voltage of the LDOs can be digitally set to 4 different voltage combinations using the DEFLDO1 and DEFLDO2 pins. The serial interface can be used for dynamic voltage scaling, masking interrupts, or for dis/enabling and setting the LDO output voltages. The interface is compatible with the Fast/Standard mode I²C specification, allowing transfers at up to 400 kHz. The TPS65023 is available in a 40-pin (RSB) QFN package, and operates over a free-air temperature of –40°C to 85°C.