TPS65023_12 Datasheet, PDF (1/55 Pages) Texas Instruments – POWER MANAGEMENT IC FOR LI-ION POWERED SYSTEMS

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TPS65023, TPS65023B
SLVS670J – JUNE 2006 – REVISED SEPTEMBER 2011
POWER MANAGEMENT IC FOR LI-ION POWERED SYSTEMS
Check for Samples: TPS65023, TPS65023B
FEATURES
1
•23 1.7 A, 90% Efficient Step-Down Converter for
Processor Core (VDCDC1)
• 1.2 A, Up to 95% Efficient Step-Down
Converter for System Voltage (VDCDC2)
• 1.0 A, 92% Efficient Step-Down Converter for
Memory Voltage (VDCDC3)
• 30 mA LDO/Switch for Real Time Clock (VRTC)
• 2 × 200 mA General-Purpose LDO
• Dynamic Voltage Management for Processor
Core
• Preselectable LDO Voltage Using Two Digital
Input Pins
• Externally Adjustable Reset Delay Time
• Battery Backup Functionality
• Separate Enable Pins for Inductive Converters
• I²C™ Compatible Serial Interface
• I²C™ Setup and Hold Timing:
– TPS65023: 300ns
– TPS65023B: 100ns
• 85-μA Quiescent Current
• Low Ripple PFM Mode
• Thermal Shutdown Protection
• 40 Pin, 5 mm × 5 mm QFN Package
APPLICATIONS
• Digital Media Players
• Internet Audio Player
• Digital Still Camera
• Smart Phones
• Supply DaVinci™ DSP Family Solutions
DESCRIPTION
The TPS65023, TPS65023B is an integrated Power
Management IC for applications powered by one
Li-Ion or Li-Polymer cell, and which require multiple
power rails. The TPS65023, TPS65023B provides
three highly efficient, step-down converters targeted
at providing the core voltage, peripheral, I/O and
memory rails in a processor based system. The core
converter allows for on-the-fly voltage changes via
serial interface, allowing the system to implement
dynamic power savings. All three step-down
converters enter a low-power mode at light load for
maximum efficiency across the widest possible range
of load currents. The TPS65023, TPS65023B also
integrates two general-purpose 200 mA LDO voltage
regulators, which are enabled with an external input
pin. Each LDO operates with an input voltage range
between 1.5 V and 6.5 V, allowing them to be
supplied from one of the step-down converters or
directly from the battery. The default output voltage of
the LDOs can be digitally set to 4 different voltage
combinations using the DEFLDO1 and DEFLDO2
pins. The serial interface can be used for dynamic
voltage scaling, masking interrupts, or for dis/enabling
and setting the LDO output voltages. The interface is
compatible with the Fast/Standard mode I²C
specification, allowing transfers at up to 400 kHz. The
TPS65023, TPS65023B is available in a 40-pin (RSB)
QFN package, and operates over a free-air
temperature of –40°C to 85°C.
1
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.
DaVinci, PowerPAD are trademarks of Texas Instruments.
2
I²C is a trademark of NXP Semiconductors.
3
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 © 2006–2011, Texas Instruments Incorporated