LM4120 - Precision Micropower Low Dropout Voltage Reference from the PowerWise® Family
Datasheet Packaging Samples & Pricing Reliability Knowledge Base

Features

Small SOT23-5 package

  

Low dropout voltage:

120 mV Typ @ 1 mA

High output voltage accuracy:

0.2%

Source and Sink current output:

±5 mA

Supply current:

160 µA Typ.

Low Temperature Coefficient:

50 ppm/°C

Enable pin

  

Fixed output voltages:

1.8, 2.048, 2.5, 3.0, 3.3, 4.096 and 5.0V

Industrial temperature Range:

-40°C to +85°C

(For extended temperature range, -40°C to 125°C, contact National Semiconductor)

  

General Description

The LM4120 is a precision low power low dropout bandgap voltage reference with up to 5 mA output current source and sink capability.

This series reference operates with input voltages as low as 2V and up to 12V consuming 160 µA (Typ.) supply current. More...


Applications

•Portable, battery powered equipment
•Instrumentation and process control
•Automotive & Industrial
•Test equipment
•Data acquisition systems
•Precision regulators
•Battery chargers
•Base stations
•Communications
•Medical equipment
  Typical Application
*click for larger image


ParametersValues
Initial Accuracy (+/-) Max 0.2, 0.5 %
Reference Voltage 1.8 V, 2.5 V, 5 V, 3 V, 4.096 V, 2.048 V, 3.3 V
Tempco, max (ppm/C) 50 ppm
Input Min Voltage 3.3 Volt
Input Max Voltage 14 Volt
Dropout Voltage 0.18 Volt
Quiescent Current 0.16 mA
Output Current 5 mA
Voltage Noise (rms) 0.33 uV
Long Term Stability (ppm/1000hr) 100 ppm
Temperature Min -40 deg C
Temperature Max 85 deg C
Automotive Yes
PowerWise Yes


Typical Performance

*click for larger image


  Also Recommended
LM4050▲Lower Current Shunt Reference
LM4132▲SOT-23 Precision Series Reference
LM4140▲Ultra High Precision Reference
Block Diagram
click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM4120 Precision Micropower Low Dropout Voltage Reference 723
Kbytes		 24-Mar-05 Download
LM4120 Precision Micropower Low Dropout Voltage Reference (Japanese)
 207 Kbytes   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
LM4120AIM5-1.8SOT-235NOPB1260RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.00reel
of
1000		R21A
XTT
6 weeks20000
LM4120AIM5-2.0SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.00reel
of
1000		R14A
XTT
6 weeks2000
LM4120AIM5-2.5SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.00reel
of
1000		R08A
XTT
6 weeks2000
LM4120AIM5-3.0SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.00reel
of
1000		R15A
XTT
6 weeks2000
LM4120AIM5-3.3SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.00reel
of
1000		R16A
XTT
6 weeks3000
LM4120AIM5-4.1SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.00reel
of
1000		R17A
XTT
6 weeks5000
LM4120AIM5-5.0SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.00reel
of
1000		R18A
XTT
6 weeks2000
LM4120IM5-1.8SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.85reel
of
1000		R21B
XTT
6 weeks2000
LM4120IM5-2.0SOT-235NOPB1260RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.85reel
of
1000		R14B
XTT
6 weeks2000
LM4120IM5-2.5SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.85reel
of
1000		R08B
XTT
6 weeks2500
LM4120IM5-3.0SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.85reel
of
1000		R15B
XTT
6 weeks5000
LM4120IM5-3.3SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.85reel
of
1000		R16B
XTT
6 weeks2000
LM4120IM5-4.1SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.85reel
of
1000		R17B
XTT
6 weeks2000
LM4120IM5-5.0SOT-235NOPB1260RoHS Download Full productionN/A
Samples
Buy Now 		1K+$0.85reel
of
1000		R18B
XTT
6 weeks3000
LM4120AIM5X-1.8SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$1.00reel
of
3000		R21A
XTT
6 weeksN/A
LM4120AIM5X-2.0SOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.00reel
of
3000		R14A
XTT
6 weeks5000
LM4120AIM5X-2.5SOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.00reel
of
3000		R08A
XTT
6 weeks5000
LM4120AIM5X-3.0SOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.00reel
of
3000		R15A
XTT
6 weeks10000
LM4120AIM5X-3.3SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$1.00reel
of
3000		R16A
XTT
6 weeks5000
LM4120AIM5X-4.1SOT-235NOPB
STD		1
1		260
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$1.00reel
of
3000		R17A
XTT
6 weeks5000
LM4120AIM5X-5.0SOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.00reel
of
3000		R18A
XTT
6 weeks5000
LM4120IM5X-1.8SOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$0.85reel
of
3000		R21B
XTT
6 weeksN/A
LM4120IM5X-2.0SOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$0.85reel
of
3000		R14B
XTT
6 weeksN/A
LM4120IM5X-2.5SOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$0.85reel
of
3000		R08B
XTT
6 weeks5000
LM4120IM5X-3.0SOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$0.85reel
of
3000		R15B
XTT
6 weeks7500
LM4120IM5X-3.3SOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$0.85reel
of
3000		R16B
XTT
6 weeks5000
LM4120IM5X-4.1SOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$0.85reel
of
3000		R17B
XTT
6 weeksN/A
LM4120IM5X-5.0SOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$0.85reel
of
3000		R18B
XTT
6 weeksN/A

General Description

The LM4120 is a precision low power low dropout bandgap voltage reference with up to 5 mA output current source and sink capability.

This series reference operates with input voltages as low as 2V and up to 12V consuming 160 µA (Typ.) supply current. In power down mode, device current drops to less than 2 µA.

The LM4120 comes in two grades (A and Standard) and seven voltage options for greater flexibility. The best grade devices (A) have an initial accuracy of 0.2%, while the standard have an initial accuracy of 0.5%, both with a tempco of 50ppm/°C guaranteed from -40°C to +125°C.

The very low dropout voltage, low supply current and power-down capability of the LM4120 makes this product an ideal choice for battery powered and portable applications.

The device performance is guaranteed over the industrial temperature range (-40°C to +85°C), while certain specs are guaranteed over the extended temperature range (-40°C to +125°C). Please contact National for full specifications over the extended temperature range. The LM4120 is available in a standard 5-pin SOT-23 package.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM4120AIM5-1.8LFAST10195100026050002739175862
LM4120AIM5-2.0LFAST10195100026050002739175862
LM4120AIM5-2.5LFAST10195100026050002739175862
LM4120AIM5-3.0LFAST10195100026050002739175862
LM4120AIM5-3.3LFAST10195100026050002739175862
LM4120AIM5-4.1LFAST10195100026050002739175862
LM4120AIM5-5.0LFAST10195100026050002739175862
LM4120AIM5X-1.8LFAST10195100026050002739175862
LM4120AIM5X-2.0LFAST10195100026050002739175862
LM4120AIM5X-2.5LFAST10195100026050002739175862
LM4120AIM5X-3.0LFAST10195100026050002739175862
LM4120AIM5X-3.3LFAST10195100026050002739175862
LM4120AIM5X-4.1LFAST10195100026050002739175862
LM4120AIM5X-5.0LFAST10195100026050002739175862
LM4120IM5-1.8LFAST10195100026050002739175862
LM4120IM5-2.0LFAST10195100026050002739175862
LM4120IM5-2.5LFAST10195100026050002739175862
LM4120IM5-3.0LFAST10195100026050002739175862
LM4120IM5-3.3LFAST10195100026050002739175862
LM4120IM5-4.1LFAST10195100026050002739175862
LM4120IM5-5.0LFAST10195100026050002739175862
LM4120IM5X-1.8LFAST10195100026050002739175862
LM4120IM5X-2.0LFAST10195100026050002739175862
LM4120IM5X-2.5LFAST10195100026050002739175862
LM4120IM5X-3.0LFAST10195100026050002739175862
LM4120IM5X-3.3LFAST10195100026050002739175862
LM4120IM5X-4.1LFAST10195100026050002739175862
LM4120IM5X-5.0LFAST10195100026050002739175862

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

TitleSize in Kbytes Date Click link below to Download
AN-1932: Application Note 1932 LMP2021MAEVAL - Bridge Sensor Instrumentation Amplifier Evaluation Board User Guide 176
Kbytes		 10-Dec-08 Download

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

[Information as of 7-Nov-2009]