TPS65012

采用 QFN-48 封装的多通道 1 节锂离子电池 PMIC：USB/AC 充电器、2 个 DC/DC、2 个 LDO 和 I2C 接口

The device is an integrated power and battery management IC for applications powered by one Li-Ion or Li-Polymer cell and which require multiple power rails. The TPS65012 device provides two highly efficient, 1.25-MHz step down converters targeted at providing the core voltage and peripheral, I/O rails in a processor-based system. Both step-down converters enter a low-power mode at light load for maximum efficiency across the widest possible range of load currents. The TPS65012 device also integrates two 200-mA LDO voltage regulators, which are enabled via the serial interface. Each LDO operates with an input voltage range between 1.8 V and 6.5 V, allowing them to be supplied from one of the step-down converters or directly from the battery.

The TPS65012 device has a highly integrated and flexible Li-Ion linear charger and system power management. It offers integrated USB-port and AC-adapter supply management with autonomous power-source selection, power FET and current sensor, high accuracy current and voltage regulation, charge status, and charge termination.

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Linear Charger Management for Single Li-Ion or

Li-Polymer Cells

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Dual Input Ports for Charging From USB or From

Wall Plug, Handles 100-mA and 500-mA USB

Requirements

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Charge Current Programmable via External

Resistor

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1-A, 95% Efficient Step-Down Converter for I/O

and Peripheral Components VMAIN

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400-mA, 90% Efficient Step-Down Converter for

Processor Core VCORE

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2x 200-mA LDOs for I/O and Peripheral

Components, LDO Enable via Bus

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Serial Interface Compatible With I2C, Supports

100-kHz, 400-kHz Operation

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LOW_PWR Pin to Lower or Disable Processor

Core Supply Voltage in Deep Sleep Mode

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70-µA Quiescent Current

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1% Reference Voltage

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Thermal Shutdown Protection