LP5550 - PowerWise Technology Compliant Energy Management Unit

Datasheet Packaging Samples & Pricing Reliability Design Tools Application Notes Knowledge Base

Features
•Supports high-efficiency PowerWise Technology Adaptive Voltage Scaling
•PWI open standard interface for system power management
•Digitally controlled intelligent voltage scaling
•1 MHz PWM switching frequency
•Auto or PWI controlled PFM mode transition
•Internal soft start/startup sequencing.
•3 programmable LDOs for I/O, PLL, and memory retention supply generation.
•Power OK output.

General Description

The LP5550 is a PWI 1.0 compliant Energy Management System for reducing power consumption of stand-alone mobile phone processors such as base-band or applications processors.

The LP5550 contains an advanced, digitally controlled switching regulator for supplying variable voltage to processor core and memory. More...


Applications

•GSM/GPRS/EDGE & UMTS cellular handsets
•Hand-held radios
•PDAs
•Battery powered devices
•Portable instruments
  Typical Application
*click for larger image


Parametric Table     expand
Parametric Table    collapse
Input Min Voltage 3 Volt
Input Max Voltage 5.5 Volt
Output Range Buck: 0.6 to 1.2V; LDO1: 0.7 to 2.2V; LDO2: 1.5 to 3.3V; LDO3: 0.6 to 1.35V
Channels 4 Channels
PowerWise Technology Adaptive Voltage Scaling
Topology Buck, LDO
Input Min Voltage 3 Volt
Input Max Voltage 5.5 Volt
Output Range Buck: 0.6 to 1.2V; LDO1: 0.7 to 2.2V; LDO2: 1.5 to 3.3V; LDO3: 0.6 to 1.35V
Channels 4 Channels
Dropout Voltage 0.26 Volt
PowerWise Technology Adaptive Voltage Scaling
Output1 VoutMin 0.6 Volt
Output1 VoutMax 1.2 Volt
Output1 IoutMax 300 mA
Output1 Topology Buck
Output2 VoutMin 0.7 Volt
Output2 VoutMax 2.2 Volt
Output2 IoutMax 100 mA
Output2 Topology LDO
Output3 VoutMin 1.5
Output3 VoutMax 3.3 Volt
Output3 IoutMax 250 mA
Output3 Topology LDO
Output4 VoutMin 0.6 Volt
Output4 VoutMax 1.35 Volt
Output4 IoutMax 50 mA
Output4 Topology LDO
Special Features PowerWise 1.0 compliant. 1 AVS Buck, 3 LDOs.
Topology Buck, LDO
Switching Frequency 1000 kHz
Adj Switch Frequency No
Sync Pin No
RegType Power Management Unit
Step-Down Yes
Step-Up No
Inverting No
Flyback No
Efficiency (peak) 90 %
Adjustable Output Yes
Error Flag No
On/Off Pin Yes
Multiple Output Capability Yes
Temperature Min -40 deg C
Temperature Max +125 deg C
PowerWise Yes
View Using Catalog


Typical Performance

*click for larger image


  Additional Resources
Design Tools (see below)

Application Notes (see below)


Connection Diagram

*click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LP5550 PowerWise™ Technology Compliant Energy Management Unit 1055 Kbytes 24-Jul-06 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.


Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LP5550SQLLP16NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$4.00reel
of
1000		NS
UZXYTT
L5550SQ
6 weeks10
LP5550SQXLLP16NOPB1260RoHS N/A Full productionN/A
 
Buy Now 		1K+$4.00reel
of
4500		NS
UZXYTT
L5550SQ
6 weeksN/A

General Description

The LP5550 is a PWI 1.0 compliant Energy Management System for reducing power consumption of stand-alone mobile phone processors such as base-band or applications processors.

The LP5550 contains an advanced, digitally controlled switching regulator for supplying variable voltage to processor core and memory. The device also incorporates 3 programmable LDO-regulators for powering I/O, PLLs and maintaining memory retention in shutdown-mode.

The device is controlled via the PWI open-standard interface. The LP5550 operates cooperatively with PowerWise technology compatible processors to optimize supply voltages adaptively over process and temperature variations or dynamically using frequency/voltage pre-characterized look-up tables.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LP5550SQCMOS7016561009540004270700104
LP5550SQXCMOS7016561009540004270700104

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Design Tools

TitleSize in Kbytes Date Click link below to Download    
PowerWise(R) Evaluation Kit Ordering Information     View    
Processor Energy Savings Through Adaptive Voltage Scaling     View    

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1460: Application Note 1460 Emulating the PowerWise Interface Using GPIOs and Software 448 Kbytes 12-Apr-06 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

More Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1653: Application Note 1653 User's Graphical User Interface(GUI) for LP555x Evaluation Board PowerWise™ Technology Compliant Energy Management Unit 1675 Kbytes 7-Jun-07 Download
AN-1857: Application Note 1857 LP5553 Evaluation Kit 3940 Kbytes 25-Mar-09 Download
AN-1610: Application Note 1610 LP5552 Evaluation Board 10829 Kbytes 20-May-08 Download
AN-1467: Application Note 1467 LP5551 Evaluation Board 32843 Kbytes 8-Jun-07 Download
AN-1467 (Japanese): Application Note 1467 LP5551 Evaluation Board
 1847 Kbytes   Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 3-Jul-2009]