TPS650245

面向锂离子电池供电系统的电源管理 IC PMIC

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. 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 converters can be forced into fixed-frequency PWM mode by pulling the MODE pin high.

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

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3.3 V or 2.80 V or Adjustable

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

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1.8 V or 2.5 V or Adjustable

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

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Two Selectable Voltages for VDCDC3

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TPS650240:

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DEFDCDC3 = LOW: VO = 1.0 V

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DEFDCDC3 = HIGH: VO = 1.3 V

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TPS650241:

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DEFDCDC3 = LOW: VO = 0.9 V

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DEFDCDC3 = HIGH: VO= 1.375 V

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TPS650242:

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DEFDCDC3 = LOW: VO = 1.0 V

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DEFDCDC3 = HIGH: VO = 1.5 V

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TPS650243:

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DEFDCDC3 = LOW: VO = 1.0 V

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DEFDCDC3 = HIGH: VO = 1.2 V

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TPS650244:

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DEFDCDC3 = LOW: VO = 1.55 V

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DEFDCDC3 = HIGH: VO = 1.6 V

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DEFDCDC3 = LOW: VO = 0.9 V

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DEFDCDC3 = HIGH: VO = 1.1 V

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30-mA LDO for Vdd_alive

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

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Dynamic Voltage Management for Processor Core

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LDO1 and LDO2 Voltage Externally Adjustable

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Separate Enable Pins for Inductive Converters

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2.25-MHz Switching Frequency

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85-μA Quiescent Current

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Thermal Shutdown Protection

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