Texas Instruments LM4040CIM3-2.5/NOPB

Mfr. Part

LM4040CIM3-2.5/NOPB

Manufacturer

Luminary Micro/Texas Instruments. Y-IC is a quality distributor of Texas Instruments and we will provide you with the best products and services

Detailed Description

2.5 V fixed shunt voltage reference, 0.5% initial accuracy, low noise, SOT-23-3 package, -40°C to +85°C operating range, RoHS3 compliant. Part of the LM4040 family for precision, low-power reference applications

Key Features

2.5 V fixed reference

Shunt topology (works like a precision Zener)

Initial accuracy ±0.5%

Temperature coefficient about 100 ppm/°C

Operating cathode current from about 65 µA to 15 mA

Low noise around 35 µVrms in the 10 Hz to 10 kHz band

Small SOT-23-3 footprint (also referenced as TO-236-3, SC-59)

Surface-mount for automated assembly

RoHS3 compliant lead-free /NOPB

Supplied in Tape & Reel for high-volume production

Key Advantages

Simple reference solution using only one resistor

Stable voltage over supply and load changes

Tiny footprint reduces PCB area and BOM cost

Low power for battery-powered designs

Reliable performance across -40°C to +85°C

Widely used, well-supported, and long-term availability

Packaging

Type: SOT-23-3 (also known as TO-236-3, SC-59); Supplier Device Package SOT-23-3

Material: epoxy molding compound with copper leadframe (typical for SOT-23)

Size: approximately 2.9 mm × 1.3 mm × 1.1 mm body

Pin configuration: Pin 1 Anode, Pin 2 Cathode, Pin 3 No Connect (device top marking may vary)

Mounting: Surface mount; delivered in Tape & Reel (TR)

Thermal characteristics: ensure adequate copper area for heat spreading; typical junction-to-ambient resistance depends on PCB (roughly 300–500 °C/W)

Electrical properties summary: 2.5 V fixed output; ±0.5% tolerance; about 100 ppm/°C tempco; minimum cathode current around 65 µA; maximum recommended cathode current about 15 mA; low noise ~35 µVrms (10 Hz to 10 kHz); RoHS3 compliant

Lifecycle

Current status: Active and not nearing discontinuation based on the present TI portfolio

Same-family equivalents and alternatives:

- LM4040AIM3-2.5/NOPB (higher precision ~0.1% accuracy)

- LM4040BIM3-2.5/NOPB (~0.2% accuracy)

- LM4040CIZ-2.5/NOPB (same 2.5 V reference in TO-92 package)

- LM4041CIM3-2.5/NOPB (low-current shunt reference option at 2.5 V)

- Adjustable shunt option: TLV431/TL431 (set to ~2.5 V with resistor network; not fixed 2.5 V)

- Comparable 2.5 V shunt from other vendors (for example Analog Devices ADR510). For exact cross-part numbers, verify specs

If you need drop-in or alternate models tailored to your constraints, please contact our sales team via our website. We will provide a precise cross-reference and availability guidance

Key Application Areas

Precision reference for ADCs and DACs

Microcontroller ADC reference and sensor biasing

Portable and battery-powered equipment

Industrial control and instrumentation

Power supply monitoring, calibration, and test equipment

Datasheet

Our website hosts the most authoritative datasheet for LM4040CIM3-2.5/NOPB. Download it on this page now for complete specifications, pinouts, layout tips, and application examples

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