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LM4050, LM4050A, LM4050B, LM4050C, LM4051, LM4051A, LM4051B, LM4051C
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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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 252kB)
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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 VOUT
    (V)
    Temp. Coeff.
    (ppm/°C)
    Initial Accuracy
    (% max)
    IREV
    (µA)
    IREV
    (mA)
    Features Package/Pins Smallest Available Pckg.
    (mm2)
    Oper. Temp.
    (°C)
    Price
    max @ +25°C min max max w/pins See Notes
    LM4050A 
    2.048
    2.5
    3
    3.3
    4.096
    5
    50 0.1 65 15 Shunt
    SC70/3
    SOT/3
    5 -40 to +125 $1.25 @1k
    LM4050B 
    2.048
    2.5
    3
    3.3
    4.096
    5
    0.2
    SC70/3
    SOT/3
    $0.82 @1k
    LM4050C 
    2.048
    2.5
    3
    3.3
    4.096
    5
    0.5
    SC70/3
    SOT/3
    $0.73 @1k
    LM4051A  1.25 0.1
    SC70/3
    SOT/3
    $1.25 @1k
    LM4051B  1.25 0.2
    SC70/3
    SOT/3
    $0.82 @1k
    LM4051C  1.25 0.5
    SC70/3
    SOT/3
    $0.73 @1k
    See All Voltage References (162)

    Diagram
    LM4050, LM4051: Typical Operating Circuit
    Typical Operating Circuit

    LM4050, LM4051: Pin Configuration
    Pin Configuration

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    Document Ref.: 19-2563; Rev 4; 2009-09-03
    This page last modified: 2009-09-03


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