DESCRIPTION
The TPS65023, TPS65023B is an integrated PowerManagement IC for applications powered by one Li-lon or Li-Polymer cell, and which require multiple power rails. The TPS65023, TPS65023B 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 formaximum efficiency across the widest possible range of load currents. The TPS65023, TPS65023B 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 1c specification, allowing transfers at up to 400 kHz. The TPS65023, TPS65023B is available in a 40-pin(RSB) QFN package, and operates over a free-air temperature of-40℃ to 85℃.
FEATURES
• 1.7A,90% Efficient Step-Down Converter for Processor Core(VDCDC1)
• 1.2A, Up to 95% Efficient Step-Down Converter for System Voltage(VDCDC2)
• 1.0A,92% Efficient Step-Down Converter for Memory Voltage(VDCDC3)
• 30 mA LDO/Switch for Real Time Clock(VRTC)
• 2×200mA 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
• 1PcTm Compatible Serial Interface
• PcTw Setup and Hold Timing:
-TPS65023:300ns
-TPS65023B:100ns
• 85-μA Quiescent Current
• Low Ripple PFM Mode
• Thermal Shutdown Protection
• 40Pin,5mm×5mm QFN Package
APPLICATIONS
• Digital Media Players
• Internet Audio Player
• Digital Still Camera
• Smart Phones
• Supply DaVinci™ DSP Family Solutions
(Picture: Pinout)
