LP3971 - Power Management Unit for Advanced Application Processors

	LP3971 - Power Management Unit for Advanced Application Processors from the PowerWise® Family

Datasheet	Packaging	Samples & Pricing	Eval. Boards	Reliability	Design Tools	Reference Designs	Application Notes	Knowledge Base

Features

•	Compatible with advanced applications processors requiring DVM (Dynamic Voltage Management)
•	Three buck regulators for powering high current processor functions or I/O's
•	6 LDO's for powering RTC, peripherals, and I/O's
•	Backup battery charger with automatic switch for lithium-manganese coin cell batteries and Super capacitors
•	I 2C compatible high speed serial interface
•	Software control of regulator functions and settings
•	Precision internal reference
•	Thermal overload protection
•	Current overload protection
•	Tiny 40-pin 5x5 mm LLP package

Key Specification

Buck RegulatorsLDO’s

•	Programmable V_OUT from 0.725 to 3.3V
•	Up to 95% efficiency
•	Up to 1.6A output current
•	±3% output voltage accuracy
•	Programmable V_OUT of 1.0V–3.3V
•	±3% output voltage accuracy
•	150/300/370 mA output currents
•	LDO RTC 30 mA
•	LDO 1 300 mA
•	LDO 2 150 mA
•	LDO 3 150 mA
•	LDO 4 150 mA
•	LDO 5 370 mA
•	100 mV (typ) dropout

General Description

The LP3971 is a multi-function, programmable Power Management Unit, designed especially for advanced application processors. The LP3971 is optimized for low power handheld applications and provides 6 low dropout, low noise linear regulators, three DC/DC magnetic buck regulators, a back-up battery charger and two GPIO’s. More...

Applications

•	PDA phones
•	Smart phones
•	Personal Media Players
•	Digital cameras
•	Application processors
•	Marvell PXA
•	Freescale
•	Samsung

Typical Application

*click for larger image

Parametric Table expand

Parametric Table collapse

Input Min Voltage 2.7 Volt

Input Max Voltage 5.5 Volt

Output Range LDOs: 1.0 to 3.3V; Bucks: 0.8 to 3.3V

Channels 9 Channels

PowerWise Technology Dynamic Voltage Scaling

Topology Buck, LDO

Input Min Voltage 2.7 Volt

Input Max Voltage 5.5 Volt

Output Range LDOs: 1.0 to 3.3V; Bucks: 0.8 to 3.3V

Channels 9 Channels

Dropout Voltage 0.25 Volt

PowerWise Technology Dynamic Voltage Scaling

Feedback Tolerance 3 %

Output1 VoutMin 0.8 Volt

Output1 VoutMax 3.3 Volt

Output1 IoutMax 1600 mA

Output1 Topology Buck

Output2 VoutMin 1 Volt

Output2 VoutMax 3.3 Volt

Output2 IoutMax 370 mA

Output2 Topology LDO

Output3 VoutMin 1.8

Output3 VoutMax 3.3 Volt

Output3 IoutMax 300 mA

Output3 Topology LDO

Output4 VoutMin 1 Volt

Output4 VoutMax 3.3 Volt

Output4 IoutMax 150 mA

Output4 Topology LDO

Special Features 3 buck regulators, 6 LDOs. See datasheet for specific output voltages, currents.

Topology Buck, LDO

Switching Frequency 2000000 Hz

Adj Switch Frequency No

Sync Pin Yes

RegType Power Management Unit

Step-Down Yes

Step-Up No

Inverting No

Flyback No

Adjustable Output Yes

Error Flag Yes

On/Off Pin 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)

Block Diagram

*click for larger image

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
LP3971 Power Management Unit for Advanced Application Processors	1157 Kbytes	23-May-08	View Online	Download	Receive via Email
LP3971 Power Management Unit for Advanced Application Processors (Japanese)	1037 Kbytes

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

Qty

Qty

$US each

LP3971SQ-B410EV

Power Management Unit for Advanced Application Processors

Full production

N/A

1+

$150.00

1

N/A

N/A

LP3971SQ-2G16

40

NOPB

1

260

Full production

N/A

Samples

reel
of
N/A

NS
UZXYTT
71-2G16

6 weeks

N/A

LP3971SQ-8858

40

NOPB

1

260

Full production

N/A

Samples

reel
of
N/A

NS
UZXYTT
71-8858

6 weeks

N/A

LP3971SQ-O509

40

NOPB

1

260

Full production

N/A

Samples

reel
of
N/A

NS
UZXYTT
71-O509

6 weeks

N/A

LP3971SQ-U511

40

NOPB

1

260

Full production

N/A

Samples

reel
of
N/A

NS
UZXYTT
71-U511

8 weeks

N/A

LP3971SQX-2G16

40

NOPB

1

260

Full production

N/A

reel
of
N/A

NS
UZXYTT
71-2G16

8 weeks

N/A

LP3971SQX-8858

40

NOPB

1

260

Full production

N/A

reel
of
N/A

NS
UZXYTT
71-8858

6 weeks

N/A

LP3971SQX-O509

40

NOPB

1

260

Full production

N/A

reel
of
N/A

NS
UZXYTT
71-O509

6 weeks

N/A

LP3971SQX-U511

40

NOPB

1

260

Full production

N/A

reel
of
N/A

NS
UZXYTT
71-U511

8 weeks

N/A

LP3971SQ-B510

40

NOPB

1

260

Full production

N/A

Samples

1K+

$3.25

reel
of
1000

NS
UZXYTT
71-B510

16 weeks

N/A

LP3971SQ-G824

40

NOPB

1

260

Full production

N/A

Samples

1K+

$3.25

reel
of
1000

NS
UZXYTT
71-G824

16 weeks

N/A

LP3971SQ-N510

40

NOPB

1

260

Full production

N/A

1K+

$3.25

reel
of
1000

NS
UZXYTT
71-N510

12 weeks

N/A

LP3971SQ-P55A

40

NOPB

1

260

Full production

N/A

Samples

1K+

$3.25

reel
of
1000

NS
UZXYTT
71-P55A

16 weeks

N/A

LP3971SQ-Q418

40

NOPB

1

260

Full production

N/A

Samples

1K+

$3.25

reel
of
1000

NS
UZXYTT
71-Q418

8 weeks

N/A

LP3971SQ-W416

40

NOPB

1

260

Full production

N/A

Samples

1K+

$3.25

reel
of
1000

NS
UZXYTT
71W416

16 weeks

N/A

LP3971SQ-B410

40

NOPB

1

260

Full production

N/A

Samples

1K+

$3.25

reel
of
1000

NS
UZXYTT
71-B410

16 weeks

5000

LP3971SQ-D510

40

NOPB

1

260

Full production

N/A

Samples

1K+

$3.25

reel
of
1000

NS
UZXYTT
71-D510

16 weeks

1000

LP3971SQ-F211

40

NOPB

1

260

Full production

N/A

Samples

1K+

$3.25

reel
of
1000

NS
UZXYTT
71-F211

16 weeks

1000

LP3971SQX-B510

40

NOPB

1

260

Full production

N/A

1K+

$3.25

reel
of
4500

NS
UZXYTT
71-B510

16 weeks

N/A

LP3971SQX-G824

40

NOPB

1

260

Full production

N/A

1K+

$3.25

reel
of
4500

NS
UZXYTT
71-G824

16 weeks

N/A

LP3971SQX-N510

40

NOPB

1

260

Full production

N/A

1K+

$3.25

reel
of
4500

NS
UZXYTT
71-N510

16 weeks

N/A

LP3971SQX-P55A

40

NOPB

1

260

Full production

N/A

1K+

$3.25

reel
of
4500

NS
UZXYTT
71-P55A

16 weeks

N/A

LP3971SQX-Q418

40

NOPB

1

260

Full production

N/A

1K+

$3.25

reel
of
4500

NS
UZXYTT
71-Q418

8 weeks

N/A

LP3971SQX-W416

40

NOPB

1

260

Full production

N/A

1K+

$3.25

reel
of
4500

NS
UZXYTT
71W416

16 weeks

N/A

LP3971SQX-B410

40

NOPB

1

260

Full production

N/A

1K+

$3.25

reel
of
4500

NS
UZXYTT
71-B410

16 weeks

15000

LP3971SQX-D510

40

NOPB

1

260

Full production

N/A

1K+

$3.25

reel
of
4500

NS
UZXYTT
71-D510

16 weeks

N/A

LP3971SQX-F211

40

NOPB

1

260

Full production

N/A

1K+

$3.25

reel
of
4500

NS
UZXYTT
71-F211

16 weeks

N/A

General Description

The LP3971 is a multi-function, programmable Power Management Unit, designed especially for advanced application processors. The LP3971 is optimized for low power handheld applications and provides 6 low dropout, low noise linear regulators, three DC/DC magnetic buck regulators, a back-up battery charger and two GPIO’s. A high speed serial interface is included to program individual regulator output voltages as well as on/off control.

Reliability Metrics

Part Number	Process	Early Failure Rate - Rejects	Sample Size (EFR)	PPM *	Rel. Rejects	Device Hours	Long Term Failure Rates (FITS)	MTTF
LP3971SQ-2G16	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-8858	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-B410	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-B510	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-D510	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-F211	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-G824	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-N510	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-O509	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-P55A	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-Q418	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-U511	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQ-W416	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-2G16	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-8858	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-B410	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-B510	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-D510	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-F211	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-G824	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-N510	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-O509	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-P55A	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-Q418	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-U511	CMOS7	0	9586	0	0	637500	6	180892365
LP3971SQX-W416	CMOS7	0	9586	0	0	637500	6	180892365

For more information on Reliability Metrics, please click here.

Design Tools

Title	Size in Kbytes	Date
Managing Power Consumption on Your Portable Applications Processor Design			View

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

Reference Designs

•	RD-139 - LP3971 Smart Power Reference Design - 8 outputs

Application Notes

Title	Size in Kbytes	Date
AN-1620: Application Note 1620 LP3971 USB Evaluation Board	1648 Kbytes	4-May-07	View Online	Download	Receive via Email
AN-1621: Application Note 1621 LP3972 USB Evaluation Board REV B/5x5	2422 Kbytes	4-May-07	View Online	Download	Receive via Email

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

[Information as of 24-Jul-2008]