TPS650244RHB

对于锂离子电源管理IC供电系统 Power Management ICs for Li-Ion Powered Systems

Description

The TPS65024x devices are integrated power management ICs for applications powered by one Li-Ion or Li-Polymer cell, which require multiple power rails. The TPS65024x provide three highly efficient, step-down converters targeted at providing the core voltage, peripheral, I/O, and memory rails in a processor-based system.

Features

• 1.6-A, 1.0-A, or 0.8-A, 97% Efficient Step-Down Converter for System Voltage VDCDC1

  – 3.3 V or 2.80 V or Adjustable

• 1.6-A, 1.0-A, or 0.8-A, up to 95% Efficient Step-Down Converter for Memory Voltage VDCDC2

  – 1.8 V or 2.5 V or Adjustable

• 0.8-A, 90% Efficient Step-Down Converter for Processor Core VDCDC3

• Two Selectable Voltages for VDCDC3

  – TPS650240:

    – DEFDCDC3 = LOW: VO = 1.0 V

    – DEFDCDC3 = HIGH: VO = 1.3 V

  – TPS650241:

    – DEFDCDC3 = LOW: VO = 0.9 V

    – DEFDCDC3 = HIGH: VO= 1.375 V

  – TPS650242:

    – DEFDCDC3 = LOW: VO = 1.0 V

    – DEFDCDC3 = HIGH: VO = 1.5 V

  – TPS650243:

    – DEFDCDC3 = LOW: VO = 1.0 V

    – DEFDCDC3 = HIGH: VO = 1.2 V

  – TPS650244:

    – DEFDCDC3 = LOW: VO = 1.55 V

    – DEFDCDC3 = HIGH: VO = 1.6 V

  – TPS650245:

    – DEFDCDC3 = LOW: VO = 0.9 V

    – DEFDCDC3 = HIGH: VO = 1.1 V

• 30-mA LDO for Vdd_alive

• 2 × 200-mA General-Purpose LDOs LDO1 and LDO2

• Dynamic Voltage Management for Processor Core

• LDO1 and LDO2 Voltage Externally Adjustable

• Separate Enable Pins for Inductive Converters

• 2.25-MHz Switching Frequency

• 85-μA Quiescent Current

• Thermal Shutdown Protection

Applications

• Split-Supply DSP and μP Solutions, ARM-Based Processors, and so on

• Cellular and Smart Phones

• GPS

• Digital Cameras

• PDA