LM4051A, LM4051B, LM4051C:50ppm/°C Precision Micropower Shunt Voltage References with Multiple Reverse Breakdown Voltages

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

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
  • 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
LM4050, LM4051: Typical Operating Circuit
LM4050, LM4051: Typical Operating Circuit
Applications/Uses
  • Cell Phones
  • Industrial Process Controls
  • Notebook Computers
  • Portable Battery-Powered Equipment
DataSheet
titleDownload file
LM4050-LM4051C Data SheetLM4050-LM4051C.pdf
Parametrics
Part NumberVOUT
(V)
Temp. Coeff.
(ppm/°C)
Initial Accuracy
(% max)
IREV
(µA)
IREV
(mA)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
max@ +25°CminmaxSee Notes
LM4050A2.048
2.5
3
3.3
4.096
5
500.16515-40 to +125SC-70/3
SOT/3
$1.44 @1k
LM4050B2.048
2.5
3
3.3
4.096
5
0.2SC-70/3
SOT/3
$0.43 @1k
LM4050C2.048
2.5
3
3.3
4.096
5
0.5SC-70/3
SOT/3
$0.37 @1k
LM4051A1.250.1SC-70/3
SOT/3
$1.50 @1k
LM4051B1.250.2SC-70/3
SOT/3
$1.05 @1k
LM4051C1.250.5SC-70/3
SOT/3
$0.99 @1k
Quality and Environmental Data
Related Products
  • LM4040:Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
LM4051AEM3-1.2+ActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
LM4051AEM3-1.2+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
LM4051AEM3-1.2-TNo Longer AvailableLM4051AEM3-1.2+TSOT,;3 pin;8 mm²-40°C to +125°CNo
LM4051AEX3-1.2+ActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4051AEX3-1.2+TActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4051AEX3-1.2-TNo Longer AvailableLM4051AEX3-1.2+TSC-70,;3 pin;5.3 mm²-40°C to +125°CNo
LM4051AIM3-1.2+TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +85°CLead Free
LM4051AIM3-1.2-TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +85°CNo
LM4051AIX3-1.2-TNo Longer AvailableSC-70,;3 pin;5.3 mm²-40°C to +85°CNo
LM4050-LM4051C.pdf LM4051C
LM4051A.pdf LM4051C
LM4050-LM4051C.pdf LM4050