TI TPS65023RSBT

电源管理锂离子/聚合物-40°C ~ 85°C（TA）

Overview

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℃.

• Supply DaVinci™ DSP Family Solutions

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)

• 1.0-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

• I2C? Setup and Hold Timing:

• -TPS65023: 300 ns

• 85-μA Quiescent Current

• Low Ripple PFM Mode

• Thermal Shutdown Protection

• 40-Pin, 5-mm × 5-mm WQFN Package

Applications

• Industrial

• Automotive

• Personal electronics applications