1 Features

1• Linear Charger Management for Single Li-Ion or ACLi-

Polymer Cells

• Dual Input Ports for Charging From USB or From

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

Requirements

• Charge Current Programmable via External

Resistor

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

and Peripheral Components (VMAIN)

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

Processor Core (VCORE)

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

Components, LDO Enable via Bus

• Serial Interface Compatible With I2C, Supports

100-kHz, 400-kHz Operation

• LOW_PWR Pin to Lower or Disable Processor

Core Supply Voltage in Deep Sleep Mode

• 70-μA Quiescent Current

• 1% Reference Voltage

• Thermal Shutdown Protection

2 Applications

• All Single Li-Ion Cell-Operated Products Requiring

Multiple Supplies Including:

– PDA

– Cellular and Smart Phone

– Internet Audio Player

– Digital Still Camera

• Digital Radio Player

• Split Supply DSP and μP Solutions

3 Description

The TPS65012 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 stepdown

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 ACLi-

adapter supply management with autonomous power-

source selection, power FET and current sensor, high

accuracy current and voltage regulation, charge

status, and charge termination.