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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)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail
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
 

Key Specifications:  Voltage References
Part Number VOUT
(V)
Temp. Coeff.
(ppm/°C)
Initial Accuracy
(% max)
IREV
(µA)
IREV
(mA)
Features Oper. Temp.
(°C)
Package/Pins Smallest Available Pckg.
(mm2)
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 -40 to +125
SC70/3
SOT/3
5.3 $1.25 @1k
LM4050B 
2.048
2.5
3
3.3
4.096
5
0.2
SC70/3
SOT/3
5.3 $0.82 @1k
LM4050C 
2.048
2.5
3
3.3
4.096
5
0.5
SC70/3
SOT/3
5.3 $0.73 @1k
LM4051A  1.25 0.1
SC70/3
SOT/3
8 $1.25 @1k
LM4051B  1.25 0.2
SC70/3
SOT/3
8 $0.82 @1k
LM4051C  1.25 0.5
SC70/3
SOT/3
8 $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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