Datasheet
TPS65020
www.ti.com
SLVS607C –SEPTEMBER 2005– REVISED SEPTEMBER 2011
POWER MANAGEMENT IC FOR LI-ION POWERED SYSTEMS
Check for Samples: TPS65020
1
FEATURES
DESCRIPTION
234
• 1.2 A, 97% Efficient Step-Down Converter for
The TPS65020 is an integrated Power Management
System Voltage (VDCDC1)
IC for applications powered by one Li-Ion or
• 1 A, Up to 95% Efficient Step-Down Converter
Li-Polymer cell, and which require multiple power
for Memory Voltage (VDCDC2)
rails. The TPS65020 provides three highly efficient,
• 800 mA, 90% Efficient Step-Down Converter
step-down converters targeted at providing the core
voltage, peripheral, I/O and memory rails in a
for Processor Core (VDCDC3)
processor based system. All three step-down
• 20 mA LDO/Switch for Real Time Clock (VRTC)
converters enter a low-power mode at light load for
• 2 × 200 mA LDO for SRAM and PLL
maximum efficiency across the widest possible range
• Dynamic Voltage Management for Processor
of load currents. The TPS65020 also integrates two
200-mA LDO voltage regulators, which are enabled
Core
with an external input pin. Each LDO operates with
• Externally Adjustable Reset Delay Time
an input voltage range between 1.5 V and 6.5 V,
• Battery Backup Functionality
allowing them to be supplied from one of the
• Separate Enable Pins for Inductive Converters step-down converters or directly from the main
battery. The two 200-mA LDO voltage regulators are
• I
2
C™ Compatible Serial Interface
intended for use with the SDRAM and PLL power
• 85-μA Quiescent Current
supply in a Intel PXA270 based system. The serial
• Low Ripple PFM Mode
interface is used for dynamic voltage scaling of the
core voltage, masking interrupts, or for dis/enabling
• Thermal Shutdown Protection
and setting the LDO output voltages. The interface is
• Push Button I/O
compatible with the Fast/Standard mode I
2
C™
specification, allowing transfers at up to 400 kHz.
APPLICATIONS
The TPS65020 incorporates a push button
• PDA
debounced input and latched output for
• Cellular/Smart Phone
implementation of a push-button turn-on feature,
typically required in smartphones or wireless PDAs.
• Internet Audio Player
• Digital Still Camera
• Digital Radio Player
• Split Supply TMS320™ DSP Family and μP
Solutions:
OMAP™1610, OMAP1710, OMAP330
• Intel
®
PXA270, etc.
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.
2TMS320, OMAP, PowerPAD are trademarks of Texas Instruments.
3Intel is a registered trademark of Intel Corporation.
4I
2
C is a trademark of Philips Electronics.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005–2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.