LM4040A:Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages

The LM4040 is a precision two-terminal shunt mode, bandgap voltage reference available in fixed reverse breakdown voltages of 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. Ideal for space-critical applications, the LM4040 is offered in the subminiature 3-pin SC70 surface-mount package (1.8mm x 1.8mm), 50% smaller than comparable devices in SOT23 surface-mount packages (SOT23 versions are also available). Laser-trimmed resistors ensure precise initial accuracy. With a 100ppm/°C temperature coefficient, the device is offered in four grades of initial accuracy ranging from 0.1% to 1%. The LM4040 has 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 LM4040 does not require an external stabilizing capacitor while ensuring stability with any capacitive load. The LM4040 is guaranteed over the temperature range of -40°C to +125°C. For a 1.225V output version, refer to the LM4041 data sheet.

Key Features
  • Ultra-Small 3-Pin SC70 Package
  • 0.1% (max) Initial Accuracy
  • 100ppm/°C (max) Temperature Coefficient Guaranteed over -40°C to +125°C Temperature Range
  • Wide Operating Current Range: 60µA to 15mA
  • Low 28µVRMS Output Noise (10Hz to 10kHz)
  • 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V Fixed Reverse Breakdown Voltages
  • No Output Capacitors Required
  • Tolerates Capacitive Loads
LM4040: Typical Operating Circuit
LM4040: Typical Operating Circuit
Applications/Uses
  • Cell Phones
  • Industrial Process Controls
  • Notebook Computers
  • Portable Battery-Powered Equipment
DataSheet
titleDownload file
LM4040-LM4040D Data SheetLM4040-LM4040D.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
LM4040A2.048
2.5
3
3.3
4.096
5
1000.16515-40 to +85
-40 to +125
SC-70/3
SOT/3
$0.95 @1k
LM4040B1000.265SC-70/3
SOT/3
$0.43 @1k
LM4040C1000.565SC-70/3
SOT/3
$0.37 @1k
LM4040D150170SC-70/3
SOT/3
$0.32 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
LM4040AEM3-2.1No Longer AvailableLM4040AEM3-2.1+SOT,;3 pin;8 mm²-40°C to +125°CNo
LM4040AEM3-2.1+ActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
LM4040AEM3-2.1+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
LM4040AEM3-2.1-TNo Longer AvailableLM4040AEM3-2.1+TSOT,;3 pin;8 mm²-40°C to +125°CNo
LM4040AEM3-2.5No Longer AvailableLM4040AEM3-2.5+SOT,;3 pin;8 mm²-40°C to +125°CNo
LM4040AEM3-2.5+ActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
LM4040AEM3-2.5+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
LM4040AEM3-2.5-TNo Longer AvailableLM4040AEM3-2.5+TSOT,;3 pin;8 mm²-40°C to +125°CNo
LM4040AEM3-3.0+ActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
LM4040AEM3-3.0+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
LM4040AEM3-3.0-TNo Longer AvailableLM4040AEM3-3.0+TSOT,;3 pin;8 mm²-40°C to +125°CNo
LM4040AEM3-3.0/V+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
LM4040AEM3-4.1No Longer AvailableLM4040AEM3-4.1+SOT,;3 pin;8 mm²-40°C to +125°CNo
LM4040AEM3-4.1+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
LM4040AEM3-4.1-TNo Longer AvailableLM4040AEM3-4.1+TSOT,;3 pin;8 mm²-40°C to +125°CNo
LM4040AEM3-5.0+ActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
LM4040AEM3-5.0+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
LM4040AEM3-5.0-TNo Longer AvailableLM4040AEM3-5.0+TSOT,;3 pin;8 mm²-40°C to +125°CNo
LM4040AEX3-2.1+TActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4040AEX3-2.1-TNo Longer AvailableLM4040AEX3-2.1+TSC-70,;3 pin;5.3 mm²-40°C to +125°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
LM4040AEX3-2.5+ActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4040AEX3-2.5+TActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4040AEX3-2.5-TNo Longer AvailableLM4040AEX3-2.5+TSC-70,;3 pin;5.3 mm²-40°C to +125°CNo
LM4040AEX3-3.0+ActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4040AEX3-3.0+TActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4040AEX3-3.0-TNo Longer AvailableLM4040AEX3-3.0+TSC-70,;3 pin;5.3 mm²-40°C to +125°CNo
LM4040AEX3-3.3+ActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4040AEX3-3.3+TActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4040AEX3-3.3-TNo Longer AvailableLM4040AEX3-3.3+TSC-70,;3 pin;5.3 mm²-40°C to +125°CNo
LM4040AEX3-4.1+ActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
LM4040AEX3-4.1+TActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4040AEX3-4.1-TNo Longer AvailableLM4040AEX3-4.1+TSC-70,;3 pin;5.3 mm²-40°C to +125°CNo
LM4040AEX3-5.0+ActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4040AEX3-5.0+TActiveSC-70,;3 pin;5.3 mm²-40°C to +125°CLead Free
LM4040AEX3-5.0-TNo Longer AvailableLM4040AEX3-5.0+TSC-70,;3 pin;5.3 mm²-40°C to +125°CNo
LM4040AIM3-2.1No Longer AvailableLM4040AIM3-2.1+SOT,;3 pin;8 mm²-40°C to +85°CNo
LM4040AIM3-2.1+ActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
LM4040AIM3-2.1+TActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
LM4040AIM3-2.1-TNo Longer AvailableLM4040AIM3-2.1+TSOT,;3 pin;8 mm²-40°C to +85°CNo
LM4040AIM3-2.5No Longer AvailableLM4040AIM3-2.5+SOT,;3 pin;8 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
LM4040AIM3-2.5+ActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
LM4040AIM3-2.5+TActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
LM4040AIM3-2.5-TNo Longer AvailableLM4040AIM3-2.5+TSOT,;3 pin;8 mm²-40°C to +85°CNo
LM4040AIM3-3.0No Longer AvailableLM4040AIM3-3.0+SOT,;3 pin;8 mm²-40°C to +85°CNo
LM4040AIM3-3.0+ActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
LM4040AIM3-3.0+TActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
LM4040AIM3-3.0-TNo Longer AvailableLM4040AIM3-3.0+TSOT,;3 pin;8 mm²-40°C to +85°CNo
LM4040AIM3-4.1No Longer AvailableLM4040AIM3-4.1+SOT,;3 pin;8 mm²-40°C to +85°CNo
LM4040AIM3-4.1+ActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
LM4040AIM3-4.1+TActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
LM4040-LM4040D.pdf LM4040D
LM4040A.pdf LM4040A