TPS65012_15 Datasheet, PDF (1/63 Pages) Texas Instruments – Power and Battery Management IC for Li-Ion Powered Systems

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TPS65012
SLVS504B – MARCH 2004 – REVISED SEPTEMBER 2015
TPS65012 Power and Battery Management IC for Li-Ion Powered Systems
1 Features
•1 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 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 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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS65012
VQFN (48)
7.00 mm x 7.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Block Diagram
AC
USB
ISET
TS
MAX(AC,USB,VBAT)
Linear Charge Controller
VBAT
PG
AGND2
SCLK
SDAT
IFLSB
PS_SEQ
LOW_PWR
PB_ONOFF
BATT_COVER
HOT_RESET
RESPWRON
MPU_RESET
INT
PWRFAIL
GPIO1
GPIO2
GPIO3
GPIO4
VIB
LED2
Serial
Interface
Control
UVLO
VREF
OSC
GPIOs
Thermal
Shutdown
VMAIN
Step-Down
Converter
VCORE
Step-Down
Converter
VLDO1
200-mA LDO
VLDO2
200-mA LDO
VINMAIN
L1
VMAIN
DEFMAIN
PGND1
VCC
AGND3
VINCORE
L2
VCORE
DEFCORE
PGND2
VINLDO1
VLDO1
VFB_LDO1
AGND1
VINLDO2
VLDO2
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.