TPS65011 Datasheet, PDF (1/52 Pages) Texas Instruments – POWER AND BATTERY MANAGEMENT IC FOR Li-ION POWERED SYSTEMS

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POWER AND BATTERY MANAGEMENT IC
FOR Li-ION POWERED SYSTEMS
TPS65011
SLVS501 – FEBRUARY 2004
FEATURES
• Linear Charger Management for Single Li-Ion
or Li-Polymer Cells
• Dual Input Ports for Charging From USB or
From Wall Plug, Handles 100-mA / 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
APPLICATIONS
• All Single Li-Ion Cell-Operated Products
Requiring Multiple Supplies Including:
– PDA
– Cellular/Smart Phone
– Internet Audio Player
– Digital Still Camera
• Digital Radio Player
• Split Supply DSP and µP Solutions
DESCRIPTION
The TPS65011 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 TPS65011 provides two highly
efficient, 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 LOW_PWR pin allows the core con-
verter to lower its output voltage when the application
processor goes into deep sleep. The TPS65011 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 TPS65011 also has a highly integrated and
flexible Li-Ion linear charger and system power man-
agement. 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.
The TPS65011 charger automatically selects the
USB-Port or the ac-adapter as the power source for
the system. In the USB configuration, the host can
increase the charge current from the default value of
maximum 100 mA to 500 mA via the interface. In the
ac-adapter configuration, an external resistor sets the
maximum value of charge current.
The battery is charged in three phases: conditioning,
constant current, and constant voltage. Charge is
normally terminated based on minimum current. An
internal charge timer provides a safety backup for
charge termination. The TPS65011 automatically
restarts the charge if the battery voltage falls below
an internal threshold. The charger automatically en-
ters sleep mode when both supplies are removed.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
I²C is a trademark of Phillips.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004, Texas Instruments Incorporated