LP5553 - PowerWise AVS Energy Management Unit with SPMI

Datasheet	Packaging	Samples & Pricing	Eval. Boards	Reliability	Application Notes	Knowledge Base

Features

•	SPMI bus for system-level power management
•	High-efficiency PowerWise ® Technology Adaptive Voltage Scaling for intelligent energy management in AVS and DVS environments
•	Two digitally programmable 3.6 MHz buck regulators to power dual voltage domains
•	Five Programmable LDOs for system functions such as:
•	PLL/Clock Generation
•	I/O
•	Memory Retention
•	Internal soft start
•	Variable regulator power up sequencing.

Key Specification

Programmable DC/DC Buck Converters

Programmable LDOs

•	2.7 to 4.8V Input Voltage Range
•	±2% (typical) Output Voltage Range
•	800 mA Output Current per DC/DC Converter
•	Up to 88% Efficiency
•	Digitally Programmable from 0.6 to 1.235V
•	Five digitally programmable LDOs

General Description

The LP5553 is a System Power Management Interface (SPMI) compliant Energy Management Unit for reducing power consumption of low power hand held applications such as dual-core processors and DSPs.

The LP5553 contains 2 advanced, digitally controlled step-down DC/DC converters for supplying variable voltages to a SoC. The device also incorporates 5 programmable low-dropout, low noise linear regulators for powering I/O, peripheral logic blocks, auxiliary system functions, and maintaining memory retention (dual-domain) in shutdown-mode.

The LP5553 implements 2 Non-Request Capable Slaves that are controlled via the SPMI. More...

Applications

•	GSM/GPRS/EDGE & UMTS cellular handsets
•	Hand-held radios
•	PDAs
•	Battery powered devices
•	Portable instruments

Typical Application

*click for larger image

LP5553 System Block Diagram

Parameters Values

Input Min Voltage 2.7 Volt

Input Max Voltage 4.8 Volt

Output Range Bucks: 0.6 to 1.235V; LDO1: 0.7 to 2.2V; LDO2: 1.5 to 3.3V; LDO3 and LDO4: 0.6 to 1.25V; LDO5: 1.2 to 3.3V

Channels 7 Channels

Dropout Voltage 0.26 Volt

PowerWise Technology Adaptive Voltage Scaling

Output1 VoutMin 0.6 Volt

Output1 VoutMax 1.235 Volt

Output1 IoutMax 800 mA

Output1 Topology Buck

Output2 VoutMin 0.6 Volt

Output2 VoutMax 1.235 Volt

Output2 IoutMax 800 mA

Output2 Topology Buck

Output3 VoutMin 1.5

Output3 VoutMax 3.3 Volt

Output3 IoutMax 250 mA

Output3 Topology LDO

Output4 VoutMin 0.7 Volt

Output4 VoutMax 2.2 Volt

Output4 IoutMax 100 mA

Output4 Topology LDO

Special Features SPMI compliant with 2 slave domains. 2 Buck regulators; 5 LDOs.

Topology Buck, LDO

Switching Frequency 3600 kHz

Adj Switch Frequency No

Sync Pin No

RegType Power Management Unit

Step-Down Yes

Step-Up No

Inverting No

Flyback No

Efficiency (peak) 88 %

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

Additional Resources

Application Notes

Connection Diagram

click for larger image

Chip view, top-down

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
LP5553 PowerWise ® AVS Energy Management Unit with SPMI	3801 Kbytes	5-Mar-09	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

LP5553TLEV-KIT

Evaluation Board for the LP5553TL

Full production

N/A

CALL

N/A

6 weeks

N/A

LP5553TL

MICRO SMD

NOPB

260

RoHS

N/A

Full production

N/A

1K+

$4.50

reel
of
250

XYTT
I 5553

12 weeks

N/A

LP5553TLX

MICRO SMD

NOPB

260

RoHS

N/A

Full production

N/A

1K+

$4.50

reel
of
1000

XYTT
I 5553

12 weeks

N/A

General Description

The LP5553 is a System Power Management Interface (SPMI) compliant Energy Management Unit for reducing power consumption of low power hand held applications such as dual-core processors and DSPs.

The LP5553 implements 2 Non-Request Capable Slaves that are controlled via the SPMI. The LP5553 operates cooperatively with PowerWise ® AVS technology compatible processors to optimize supply voltages adaptively (AVS - Adaptive Voltage Scaling) over process and temperature variations. It also supports dynamic voltage scaling (DVS) using frequency/voltage pairs from pre-characterized look-up tables.

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LP5553TL	CMOS7	0	18406	0	0	1089000	4	309006723
LP5553TLX	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.

Application Notes

Title	Size in Kbytes	Date
AN-1857: Application Note 1857 LP5553 Evaluation Kit	3940 Kbytes	25-Mar-09	Download

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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-1460: Application Note 1460 Emulating the PowerWise Interface Using GPIOs and Software	448 Kbytes	12-Apr-06	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

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[Information as of 7-Nov-2009]