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Maxim > Products > Voltage References 
LM4050, LM4051
50ppm/°C Precision Micropower Shunt Voltage References with Multiple Reverse Breakdown Voltages

Industry Standard 50ppm/°C Voltage Reference Fits in SC70


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Data Sheet
FULL DATA SHEET (PDF, 292kB)
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Description
The LM4050/LM4051 are precision two-terminal, shuntmode, bandgap voltage references available in fixed reverse breakdown voltages of 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. Ideal for space-critical applications, the LM4050/LM4051 are offered in the subminiature 3-pin SC70 surface-mount packages (1.8mm x 1.8mm), 50% smaller than comparable devices in SOT23 surface-mount package (SOT23 versions are also available).

Laser-trimmed resistors ensure excellent initial accuracy. With a 50ppm/°C temperature coefficient, these devices are offered in three grades of initial accuracy ranging from 0.1% to 0.5%. The LM4050/LM4051 have a 60µA to 15mA shunt-current capability with low dynamic impedance, ensuring stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents. The LM4050/LM4051 do not require an external stabilizing capacitor while ensuring stability with any capacitive loads.

The LM4050/LM4051 specifications are guaranteed over the temperature range of -40°C to +125°C.

Key Features   Applications/Uses
  		• 50ppm/°C (max) Temperature Coefficient Guaranteed over the -40°C to +125°C Temperature Range
  		• Ultra-Small 3-Pin SC70 Package
  		• 0.1% (max) Initial Accuracy
  		• Wide Operating Current Range: 60µA to 15mA
  		• Low 28µVRMS Output Noise (10Hz to 10kHz)
  		• 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V Fixed Reverse Breakdown Voltages
  		• No Output Capacitors Required
  		• Tolerates Capacitive Loads

    		  
  		• Cell Phones
  		• Industrial Process Controls
  		• Notebook Computers
  		• Portable Battery-Powered Equipment

    Key Specifications:   Voltage References
    Part Number Output Voltage (V) Tempco (max) (ppm/°C) Initial Accuracy (% max @ +25°C) Reverse Breakdown Current (min) (µA) Reverse Breakdown Current (max) (mA) Features Package Operating Temp. Range (°C) Price**
    LM4050A  2.048
    2.5
    3.0
    3.3
    4.096
    5.0     		50 0.1 65 15
    •Shunt
    		 SC-70/3
    SOT-23/3     		-40 to +125 $1.25 @ 1k
    LM4050B  2.048
    2.5
    3.0
    3.3
    4.096
    5.0     		0.2 $0.82 @ 1k
    LM4050C  2.048
    2.5
    3.0
    3.3
    4.096
    5.0     		0.5 $0.73 @ 1k
    LM4051A  1.25 0.1 $1.25 @ 1k
    LM4051B  1.25 0.2 $0.82 @ 1k
    LM4051C  1.25 0.5 $0.73 @ 1k
    See All Voltage References (159)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    LM4050, LM4051: Typical Operating Circuit
    Typical Operating Circuit

    LM4050, LM4051: Pin Configuration
    Pin Configuration

    Evaluation Kits
    none

    Design Guides
  		• REFERENCE (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Reliability Report: LM4050xxxx.pdf LM4051xxxx.pdf
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Filter:

    Devices: 1-100 of 241

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    LM4050 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    LM4050DEX3-3.3-T  



    		-40°C to +125°C See data sheet
    LM4050A Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    LM4050AIX3-2.1  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIX3-2.1-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIX3-2.5  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIX3-2.5-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIX3-3.0  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIX3-3.0-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIX3-4.1  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIX3-4.1-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIX3-5.0-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEX3-5.0  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEX3-2.1  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEX3-2.5  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEX3-2.1+T  



    		-40°C to +125°C See data sheet
    LM4050AEX3-3.0  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEX3-4.1+  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AEX3-4.1  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEX3-2.5+  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AIX3-5.0  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEX3-4.1+T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AEX3-3.0+T  



    		-40°C to +125°C See data sheet
    LM4050AEX3-2.5+T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AEX3-5.0+T  



    		-40°C to +125°C See data sheet
    LM4050AEX3-3.3+  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AEX3-2.1-T  



    		-40°C to +125°C See data sheet
    LM4050AEX3-2.5-T  



    		-40°C to +125°C See data sheet
    LM4050AEX3-4.1-T  



    		-40°C to +125°C See data sheet
    LM4050AEX3-3.3  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEX3-5.0-T  



    		-40°C to +125°C See data sheet
    LM4050AEX3-3.0-T  



    		-40°C to +125°C See data sheet
    LM4050AEX3-3.3+T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AEX3-3.3-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEX3-3.0+  



    		-40°C to +125°C See data sheet
    LM4050AEX3-2.1+  



    		-40°C to +125°C See data sheet
    LM4050AEX3-5.0+  



    		-40°C to +125°C See data sheet
    LM4050AEM3-3.0+  



    		-40°C to +125°C See data sheet
    LM4050AEM3-4.1+  



    		-40°C to +125°C See data sheet
    LM4050AEM3-2.1  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEM3-2.1+T  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AEM3-2.5+T  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AIM3-5.0  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEM3-4.1  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEM3-3.0+T  



    		-40°C to +125°C See data sheet
    LM4050AEM3-5.0+  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AEM3-3.0  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEM3-4.1+T  



    		-40°C to +125°C See data sheet
    LM4050AEM3-2.5+  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AEM3-2.1+  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AEM3-5.0+T  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050AIM3-4.1-T  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIM3-4.1  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEM3-5.0  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIM3-5.0-T  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEM3-2.5  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIM3-2.1  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIM3-3.0  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIM3-2.5-T  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIM3-2.5  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIM3-2.1-T  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AIM3-3.0-T  
    		SOT-23;3 pin;
    Dwg: 21-0051 (PDF)
    Use pkgcode/variation: U3-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050AEM3-2.1-T  



    		-40°C to +125°C See data sheet
    LM4050AEM3-3.0-T  



    		-40°C to +125°C See data sheet
    LM4050AEM3-5.0-T  



    		-40°C to +125°C See data sheet
    LM4050AEM3-2.5-T  



    		-40°C to +125°C See data sheet
    LM4050AEM3-4.1-T  



    		-40°C to +125°C See data sheet
    LM4050B Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    LM4050BEX3-4.1+T  



    		-40°C to +125°C See data sheet
    LM4050BEX3-3.0+T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050BEX3-2.5+T  



    		-40°C to +125°C See data sheet
    LM4050BEX3-2.1+T  



    		-40°C to +125°C See data sheet
    LM4050BIX3-4.1  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BIX3-4.1-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BEX3-4.1  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BIX3-5.0  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BIX3-5.0-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BEX3-5.0  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BEX3-3.0+  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050BEX3-5.0+  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050BEX3-5.0+T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050BEX3-2.5  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BIX3-2.1  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BIX3-2.5  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BEX3-2.1  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BIX3-2.5-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BIX3-3.0  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BIX3-3.0-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BEX3-3.0  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BIX3-2.1-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BEX3-3.0-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BEX3-2.5-T  



    		-40°C to +125°C See data sheet
    LM4050BEX3-2.1-T  



    		-40°C to +125°C See data sheet
    LM4050BEX3-4.1-T  



    		-40°C to +125°C See data sheet
    LM4050BEX3-5.0-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BEX3-3.3  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BEX3-3.3+  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3+2*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    LM4050BEX3-3.3-T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgcode/variation: X3-2*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    LM4050BEX3-3.3+T  
    		SC-70;3 pin;
    Dwg: 21-0075 (PDF)
    Use pkgco