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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 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 ACadapter supply management with autonomous powersource 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.
TPS65012
SLVS504B – MARCH 2004 – REVISED SEPTEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History..................................................... 2 5 Pin Configuration and Functions ......................... 3 6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5 6.2 ESD Ratings.............................................................. 5 6.3 Recommended Operating Conditions....................... 5 6.4 Thermal Information .................................................. 5 6.5 Electrical Characteristics........................................... 6 6.6 Battery Charger Electrical Characteristics ................ 8 6.7 Serial Interface Timing Requirements..................... 11 6.8 Dissipation Ratings ................................................ 11 6.9 Typical Characteristics ............................................ 12 7 Detailed Description ............................................ 17 7.1 Overview ................................................................. 17 7.2 Functional Block Diagram ....................................... 18
7.3 Feature Description................................................. 19 7.4 Device Functional Modes........................................ 28 7.5 Programming........................................................... 35 7.6 Register Maps ......................................................... 39 8 Application and Implementation ........................ 48 8.1 Application Information..................