LM4040AIM3X-2.5/NOPB
Texas InstrumentsLM4040AIM3X-2.5/NOPB is a Texas Instruments 2.5 V precision shunt voltage reference in 3-pin SOT-23 — for cost-effective precision references in power-supply feedback and ADC reference inputs: flyback error amplifiers, battery monitors and sensor biasing. ±0.1% initial accuracy (A grade), 100 ppm/°C temperature coefficient, 65 µA minimum cathode current, 15 mA maximum, -40 to +85 °C. The shunt topology is the selection point: a two-terminal programmable-Zener behavior that drops into existing TL431 sockets as a precision upgrade, with no supply pin to route. Selection advice: the /NOPB code is the lead-free reel version — TI discontinued the SnPb-plated LM4040AIM3-2.5, so specify /NOPB for all new builds; the A grade (±0.1%) suits precision loops while the C grade costs less for supervisory use. Match the full code including /NOPB for RoHS compliance. Parameters verified against Texas Instruments documentation.
- MPN
- LM4040AIM3X-2.5/NOPB
- Manufacturer
- Texas Instruments
- Family
- Precision voltage reference
- Package
- SOT-23-3
- Manufacturer channel coverage
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