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Analog Devices LM4050CEM3-2.1+T — DC-DC Power Modules
Analog Devices

LM4050CEM3-2.1+T Shunt Voltage Reference

MPNLM4050CEM3-2.1+T
End of Life

Maxim Integrated LM4050CEM3-2.1+T precision shunt voltage reference, fixed 2.048 V output, ±0.5% tolerance, 50 ppm/°C, SOT-23-3, -40°C to 125°C.

$2.7Ref. price · indicative, final on quote
LM4050CEM3-2.1+T datasheet
PackagingTO-236-3, SC-59, SOT-23-3
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

LM4050CEM3-2.1+T Technical Specifications
ParameterValue
Output typeFixed
Mounting typeSurface Mount
Reference typeShunt
Voltage - output (Min (Fixed))2.048V
Current - output15 mA
Current - cathode65 µA
Operating temperature-40°C ~ 125°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±0.5%
CaseTO-236-3, SC-59, SOT-23-3
Noise - 10Hz to 10kHz28µVrms
Temperature coefficient50ppm/°C

Product details

Precision 2.048 V shunt reference in a SOT-23-3

The Maxim Integrated LM4050CEM3-2.1+T is a precision shunt voltage reference delivering a fixed 2.048 V output with a tight ±0.5% initial tolerance. Housed in a SOT-23-3 package, it is a surface-mount part suited for ADC biasing, comparator thresholds, and power-supply monitoring in industrial and automotive temperature environments spanning -40°C to 125°C.

What the ratings mean for the BOM

The shunt architecture draws a cathode current of 65 µA typical, and the part can source up to 15 mA to the load. That 65 µA quiescent is the minimum bias current needed to keep the reference in regulation — budget it in the supply rail alongside the load current. For battery-powered designs, the 65 µA floor is low enough to leave the reference on continuously without draining the cell overnight.

Package and rework notes

The SOT-23-3 package (TO-236 / SC-59 equivalent) is a three-pin body. It reflows cleanly with a standard hot-air profile — no hidden thermal pad, no risk of tombstoning if the paste stencil is right.

Lifecycle and sourcing

This part carries an Active lifecycle status and is ROHS3 compliant.

Frequently asked questions

Can LM4050CEM3-2.1+T be used as a replacement for LM4050CEM3-2.5?

The LM4050CEM3-2.5 outputs 2.5 V, while this part outputs 2.048 V. They are pin-compatible in the same SOT-23-3 package but the voltage difference means the circuit must be designed for the 2.048 V level — they are not drop-in replacements without adjusting the ADC reference or comparator threshold.