LP3990 - 150mA Linear Voltage Regulator for Digital Applications

	LP3990 - 150mA Linear Voltage Regulator for Digital Applications

Datasheet	Packaging	Samples & Pricing	Reliability	Application Notes	Knowledge Base

Features

•	1% Voltage Accuracy at Room Temperature
•	Stable with Ceramic Capacitor
•	Logic Controlled Enable
•	No Noise Bypass Capacitor Required
•	Thermal-Overload and Short-Circuit Protection

Key Specification

Input Voltage Range	2.0 to 6.0V
Output Voltage Range	0.8 to 3.3V
Output Current	150mA
Output Stable - Capacitors	1.0uF
Virtually Zero I_Q (Disabled)	<10nA
Very Low I_Q (Enabled)	43uA
Low Output Noise	150uV_RMS
PSRR	55dB at 1kHz
Fast Start Up	105us

General Description

The LP3990 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low noise, and low quiescent current. More...

Applications

•	Cellular Handsets
•	Hand-Held Information Appliances

Typical Application

click for larger image

Parametric Table expand

Parametric Table collapse

Output Current 150 mA

Output Min 1.8, 0.8, 1.2, 3.3, 2.8, 3.8, 1.5, 1.35, 2.5 Volt

Dropout Voltage 0.06 Volt

Adjustable Output No

Quiescent Current 0.043 mA

Output Current 150 mA

Input Min Voltage 3.3, 3, 2, 3.8, 2.3 Volt

Input Max Voltage 6 Volt

Output Min 1.8, 0.8, 1.2, 3.3, 2.8, 3.8, 1.5, 1.35, 2.5 Volt

Dropout Voltage 0.06 Volt

Adjustable Output No

Quiescent Current 0.043 mA

On/Off Pin Yes

Error Flag No

RegType LDO

Temperature Min -40 deg C

Temperature Max 125 deg C

Output Voltage 1.8, 0.8, 1.2, 3.3, 2.8, 3.8, 1.5, 1.35, 2.5 Volt

Output Max 1.8, 0.8, 1.2, 3.3, 2.8, 3.8, 1.5, 1.35, 2.5 Volt

View Using Catalog

Typical Performance

click for larger image

Also Recommended

800Ma Ldo, Adj Output Down To 1.0V

Additional Resources

Online Seminars

Powering FPGAs: Design Considerations, IC Solutions and Tools

Application Notes (see below)

Connection Diagram

click for larger image

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
LP3990 150mA Linear Voltage Regulator for Digital Applications	711 Kbytes	21-Nov-05	View Online	Download	Receive via Email

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

LP3990MF-1.2

5

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
1000

12 weeks

2500

LP3990MF-1.5

5

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
1000

12 weeks

5000

LP3990MF-1.8

5

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
1000

8 weeks

15000

LP3990MF-2.5

5

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
1000

16 weeks

2000

LP3990MF-2.8

5

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
1000

16 weeks

2000

LP3990MF-3.3

5

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
1000

12 weeks

5000

LP3990MFX-1.2

5

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

12 weeks

5000

LP3990MFX-1.5

5

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

12 weeks

N/A

LP3990MFX-1.8

5

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

12 weeks

10000

LP3990MFX-2.5

5

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

12 weeks

5000

LP3990MFX-2.8

5

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

12 weeks

N/A

LP3990MFX-3.3

5

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

12 weeks

5000

LP3990SD-0.8

6

NOPB

1

260

Full production

N/A

Samples

1K+

$0.32

reel
of
1000

12 weeks

N/A

LP3990SD-1.2

6

NOPB

1

260

Full production

N/A

Samples

1K+

$0.32

reel
of
1000

12 weeks

15000

LP3990SD-1.35

6

NOPB

1

260

Full production

N/A

Samples

1K+

$0.32

reel
of
1000

12 weeks

50

LP3990SD-1.5

6

NOPB

1

260

Full production

N/A

Samples

1K+

$0.32

reel
of
1000

12 weeks

3000

LP3990SD-1.8

6

NOPB

1

260

Full production

N/A

Samples

1K+

$0.32

reel
of
1000

12 weeks

5000

LP3990SD-2.5

6

NOPB

1

260

Full production

N/A

Samples

1K+

$0.32

reel
of
1000

12 weeks

15000

LP3990SD-2.8

6

NOPB

1

260

Full production

N/A

Samples

1K+

$0.32

reel
of
1000

12 weeks

50

LP3990SDX-0.8

6

NOPB

1

260

Full production

N/A

1K+

$0.32

reel
of
4500

12 weeks

N/A

LP3990SDX-1.2

6

NOPB

1

260

Full production

N/A

1K+

$0.32

reel
of
4500

12 weeks

N/A

LP3990SDX-1.35

6

Full production

N/A

1K+

$0.32

reel
of
4500

16 weeks

N/A

LP3990SDX-1.5

6

NOPB

1

260

Full production

N/A

1K+

$0.32

reel
of
4500

12 weeks

N/A

LP3990SDX-1.8

6

NOPB

1

260

Full production

N/A

1K+

$0.32

reel
of
4500

12 weeks

N/A

LP3990SDX-2.5

6

NOPB

1

260

Full production

N/A

1K+

$0.32

reel
of
4500

12 weeks

N/A

LP3990SDX-2.8

6

NOPB

1

260

Full production

N/A

1K+

$0.32

reel
of
4500

12 weeks

N/A

LP3990TL-0.8

4

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
250

16 weeks

2000

LP3990TL-1.2

4

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
250

12 weeks

500

LP3990TL-1.35

4

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
250

12 weeks

2000

LP3990TL-1.5

4

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
250

16 weeks

2000

LP3990TL-1.8

4

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
250

12 weeks

5000

LP3990TL-2.5

4

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
250

12 weeks

1000

LP3990TL-2.8

4

NOPB

1

260

Full production

N/A

Samples

1K+

$0.30

reel
of
250

12 weeks

1000

LP3990TLX-0.8

4

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

16 weeks

N/A

LP3990TLX-1.2

4

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

12 weeks

7500

LP3990TLX-1.35

4

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

12 weeks

N/A

LP3990TLX-1.5

4

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

16 weeks

10000

LP3990TLX-1.8

4

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

6 weeks

40000

LP3990TLX-2.5

4

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

6 weeks

15000

LP3990TLX-2.8

4

NOPB

1

260

Full production

N/A

1K+

$0.30

reel
of
3000

12 weeks

7500

Obsolete Parts

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LP3990YD-1.5	NONE	NONE	11/16/2008

General Description

The LP3990 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low noise, and low quiescent current. The LP3990 will provide a 0.8V output from the low input voltage of 2V at up to 150mA load current. When switched into shutdown mode via a logic signal at the enable pin, the power consumption is reduced to virtually zero.

The LP3990 is designed to be stable with space saving ceramic capacitors as small as 1.0µF.

Performance is specified for a -40°C to 125°C junction temperature range.

For output voltages other than 0.8V, 1.2, 1.35V, 1.5V, 1.8V, 2.5V, 2.8V, or 3.3V please contact your local NSC sales office.

Reliability Metrics

Part Number	Process	Early Failure Rate - Rejects	Sample Size (EFR)	PPM *	Rel. Rejects	Device Hours	Long Term Failure Rates (FITS)	MTTF
LP3990MF-1.2	CMOS7	0	9586	0	0	637500	6	180892365
LP3990MF-1.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990MF-1.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990MF-2.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990MF-2.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990MF-3.3	CMOS7	0	9586	0	0	637500	6	180892365
LP3990MFX-1.2	CMOS7	0	9586	0	0	637500	6	180892365
LP3990MFX-1.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990MFX-1.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990MFX-2.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990MFX-2.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990MFX-3.3	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SD-0.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SD-1.2	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SD-1.35	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SD-1.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SD-1.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SD-2.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SD-2.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SDX-0.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SDX-1.2	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SDX-1.35	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SDX-1.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SDX-1.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SDX-2.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990SDX-2.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TL-0.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TL-1.2	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TL-1.35	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TL-1.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TL-1.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TL-2.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TL-2.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TLX-0.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TLX-1.2	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TLX-1.35	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TLX-1.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TLX-1.8	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TLX-2.5	CMOS7	0	9586	0	0	637500	6	180892365
LP3990TLX-2.8	CMOS7	0	9586	0	0	637500	6	180892365

For more information on Reliability Metrics, please click here.

Application Notes

Title	Size in Kbytes	Date
AN-1342: Application Note 1342 LP3994 microSMD Evaluation Board Information	79 Kbytes	13-Oct-04	View Online	Download	Receive via Email
AN-1416: Application Note 1416 LP3991TL micro SMD Evaluation Board Information	1212 Kbytes	11-Mar-07	View Online	Download	Receive via Email
AN-1416 (Chinese): Application Note 1416 LP3991TL micro SMD Evaluation Board Information	210 Kbytes
AN-1377: Application Note 1377 LP3996 / LP5996 Application Board Information	514 Kbytes	3-Nov-06	View Online	Download	Receive via Email
AN-1377 (Chinese): Application Note 1377 LP3996 / LP5996 Application Board Information	232 Kbytes

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

[Information as of 25-Jul-2008]