NSC LP8725TLE-A Power management unit for application/multimedia processors and sub-system Datasheet

LP8725 PRODUCT BRIEF
Power Management Unit for Application/Multimedia
Processors and Sub-Systems
General Description
Features
This device is a multi-function, programmable Power Management Unit (PMU), optimized for sub block power solutions.
This device integrates two highly efficient 600 mA step-down
DC/DC converters configurable up to 800 mA load with Dynamic Voltage Scaling (DVS) through an I2C, two low noise
analog LDOs, three digital LDOs for up to 300 mA load current
each, two Low Input Low Output (LILO) regulators and an
I2C-compatible serial interface to allow a host controller access to the internal control registers. The device also features
programmable power-on sequencing. LDO regulators provide high PSRR and low noise ideally suited for supplying
power to both analog and digital loads.
The device can be configured either as a Sub_PMU for modules (for example, camera/multimedia modules) or as a
stand-alone PMU that powers the processor itself.
“Notice: This document is not a datasheet. For more information regarding this product or to order samples
please contact your local National Semiconductor sales
office or visit http://www.national.com/support/dir.html.
■ Two High Efficiency Step-Down DC/DC Convertors,
■
■
■
■
■
■
IOUT = 600 mA, with a 4MHz switching frequency using
small 1µH inductors, with options up to 800 mA.
Three digital LDOs for up to 300 mA load current each
Two low-noise analog 300 mA LDOs
Two low-input low output regulators, IOUT = 300 mA
I2C-compatible interface for the controlling of internal
registers
Adjustable startup sequence through I2C or configuration
Thermal shutdown protection
Key Specifications
■ 190 mV typ. Dropout Voltage on digital LDOs @ 300 mA
■ 2% typ. Output Voltage Accuracy on digital and analog
LDOs
■ 10 µVrms Output Noise on analog LDOs
■ ±2% typ. Output Voltage Bucks up to 93% efficiency
■ 30-bump micro SMD package (0.5 mm pitch)
Applications
■ Multi-media Processors
■ Portable Handheld Products
© 2010 National Semiconductor Corporation
300980
www.national.com
LP8725 PRODUCT BRIEF
October 14, 2010
LP8725 PRODUCT BRIEF
Typical Application (SUB-PMU)
30098001
www.national.com
2
LP8725 PRODUCT BRIEF
Typical Application (PMU)
30098005
3
www.national.com
LP8725 PRODUCT BRIEF
Ordering Information
Order Number
Package Type
Product Identification
Supplied as
LP8725TLE
micro SMD
8725
250 Tape & Reel
LP8725TLX
micro SMD
8725
3000 Tape & Reel
LP8725TLE-A
micro SMD
V023
250 Tape & Reel
LP8725TLX-A
micro SMD
V023
3000 Tape & Reel
LP8725TLE-B
micro SMD
V028
250 Tape & Reel
LP8725TLX-B
micro SMD
V028
3000 Tape & Reel
LP8725TLE-D
micro SMD
V031
250 Tape & Reel
LP8725TLX-D
micro SMD
V031
3000 Tape & Reel
The LP8725-A, LP8725-B and LP8725–D variants offer alternative startup default configurations to the standard LP8725 part (see
Start-up Sequences and Default Output Voltages).
www.national.com
4
LP8725 PRODUCT BRIEF
Physical Dimensions inches (millimeters) unless otherwise noted
30-bump micro SMD Package
NS Package Number TLA30D1A
X1 = 2.568 mm ±0.030 mm
X2 = 2.974 mm ±0.030 mm
X3 = 0.600 mm ±0.075 mm
5
www.national.com
LP8725 PRODUCT BRIEF
Notes
For more National Semiconductor product information and proven design tools, visit the following Web sites at:
www.national.com
Products
Design Support
Amplifiers
www.national.com/amplifiers
WEBENCH® Tools
www.national.com/webench
Audio
www.national.com/audio
App Notes
www.national.com/appnotes
Clock and Timing
www.national.com/timing
Reference Designs
www.national.com/refdesigns
Data Converters
www.national.com/adc
Samples
www.national.com/samples
Interface
www.national.com/interface
Eval Boards
www.national.com/evalboards
LVDS
www.national.com/lvds
Packaging
www.national.com/packaging
Power Management
www.national.com/power
Green Compliance
www.national.com/quality/green
Switching Regulators
www.national.com/switchers
Distributors
www.national.com/contacts
LDOs
www.national.com/ldo
Quality and Reliability
www.national.com/quality
LED Lighting
www.national.com/led
Feedback/Support
www.national.com/feedback
Voltage References
www.national.com/vref
Design Made Easy
www.national.com/easy
www.national.com/powerwise
Applications & Markets
www.national.com/solutions
Mil/Aero
www.national.com/milaero
PowerWise® Solutions
Serial Digital Interface (SDI) www.national.com/sdi
Temperature Sensors
www.national.com/tempsensors SolarMagic™
www.national.com/solarmagic
PLL/VCO
www.national.com/wireless
www.national.com/training
PowerWise® Design
University
THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION
(“NATIONAL”) PRODUCTS. NATIONAL MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY
OR COMPLETENESS OF THE CONTENTS OF THIS PUBLICATION AND RESERVES THE RIGHT TO MAKE CHANGES TO
SPECIFICATIONS AND PRODUCT DESCRIPTIONS AT ANY TIME WITHOUT NOTICE. NO LICENSE, WHETHER EXPRESS,
IMPLIED, ARISING BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS
DOCUMENT.
TESTING AND OTHER QUALITY CONTROLS ARE USED TO THE EXTENT NATIONAL DEEMS NECESSARY TO SUPPORT
NATIONAL’S PRODUCT WARRANTY. EXCEPT WHERE MANDATED BY GOVERNMENT REQUIREMENTS, TESTING OF ALL
PARAMETERS OF EACH PRODUCT IS NOT NECESSARILY PERFORMED. NATIONAL ASSUMES NO LIABILITY FOR
APPLICATIONS ASSISTANCE OR BUYER PRODUCT DESIGN. BUYERS ARE RESPONSIBLE FOR THEIR PRODUCTS AND
APPLICATIONS USING NATIONAL COMPONENTS. PRIOR TO USING OR DISTRIBUTING ANY PRODUCTS THAT INCLUDE
NATIONAL COMPONENTS, BUYERS SHOULD PROVIDE ADEQUATE DESIGN, TESTING AND OPERATING SAFEGUARDS.
EXCEPT AS PROVIDED IN NATIONAL’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, NATIONAL ASSUMES NO
LIABILITY WHATSOEVER, AND NATIONAL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY RELATING TO THE SALE
AND/OR USE OF NATIONAL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR
PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY
RIGHT.
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR
SYSTEMS WITHOUT THE EXPRESS PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
Life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and
whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected
to result in a significant injury to the user. A critical component is any component in a life support device or system whose failure to perform
can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness.
National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other
brand or product names may be trademarks or registered trademarks of their respective holders.
Copyright© 2010 National Semiconductor Corporation
For the most current product information visit us at www.national.com
National Semiconductor
Americas Technical
Support Center
Email: [email protected]
Tel: 1-800-272-9959
www.national.com
National Semiconductor Europe
Technical Support Center
Email: [email protected]
National Semiconductor Asia
Pacific Technical Support Center
Email: [email protected]
National Semiconductor Japan
Technical Support Center
Email: [email protected]
Similar pages