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

Parameters Values

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

Typical Performance

*click for larger image

Additional Resources

Design Tools

Application Notes

Connection Diagram

*click for larger image

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
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 Number

Package

Factory Lead Time

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking
Format

Type

Pins

Spec.

MSL
Rating

Peak
Reflow

RoHS
Report

CAD
Symbols

Weeks

Qty

$US each

LP5550SQ

LLP

NOPB

260

RoHS

N/A

Full production

N/A

1K+

$4.00

reel
of
1000

NS
UZXYTT
L5550SQ

6 weeks

LP5550SQX

LLP

NOPB

260

RoHS

N/A

Full production

N/A

1K+

$4.00

reel
of
4500

NS
UZXYTT
L5550SQ

6 weeks

N/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)
LP5550SQ	CMOS7	0	18406	0	0	1089000	4	309006723
LP5550SQX	CMOS7	0	18406	0	0	1089000	4	309006723

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

Title	Size in Kbytes	Date
PowerWise(R) Evaluation Kit Ordering Information			View
Article - Processor Energy Savings Through Adaptive Voltage Scaling			View

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

Application Notes

Title	Size in Kbytes	Date
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

Title	Size in Kbytes	Date
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

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

[Information as of 7-Nov-2009]