Texas Instruments LM4040C25MDBZTEP

Mfr. Part

LM4040C25MDBZTEP

Manufacturer

Luminary Micro/Texas Instruments. Y-IC is a quality distributor for this brand and we deliver genuine products, fast logistics, and responsive technical support to help you succeed.

Detailed Description

2.5 V fixed shunt voltage reference in a tiny SOT-23-3 package. 0.64% initial accuracy, 100 ppm/°C tempco, low noise, and -55°C to +125°C operation. Surface-mount, RoHS3 compliant. Ideal as a precise reference for power, sensing, and measurement designs. Base product family: LM4040. In stock at Y-IC (current lot quantity approx. 3100 units, subject to change).

Key Features

Reference type: Shunt (two-terminal operation)

Output voltage: 2.5 V fixed

Initial accuracy: ±0.64% (at 25°C)

Temperature coefficient: 100 ppm/°C

Output/shunt current: up to 15 mA

Minimum operating (cathode) current: typically 82 µA (note: source listed “82 A”; correct unit is µA for this family)

Noise (10 Hz to 10 kHz): 35 µVrms typical (note: source listed “35 Vrms”; correct unit is µVrms for this class of device)

Operating temperature: -55°C to +125°C (TA)

Package/case: SOT-23-3 (also known as TO-236-3, SC-59)

Mounting: Surface mount

RoHS: ROHS3 compliant

Base product number: LM4040

Supply format: Tape & Reel (TR)

Key Advantages

Precise 2.5 V reference with tight tolerance for accurate measurements and stable regulation

Works over a wide temperature range for industrial and extended-environment use

Simple two-terminal shunt topology simplifies design and saves board space

Small SOT-23-3 package fits dense, portable, and space-limited designs

Low current operation helps reduce power consumption

Broad second-sourcing across industry (LM4040 family) supports long-term availability

EP-grade lineage supports high-reliability applications that need tighter controls

Packaging

Type: SOT-23-3 plastic-molded surface-mount IC; supplied in Tape & Reel (TR) for automated assembly

Material: Molded epoxy body with copper leadframe; Pb-free matte tin leads; RoHS3 compliant

Size: Approx. 2.9 mm x 1.3 mm body, ~1.1 mm height (typical SOT-23 dimensions)

Pin configuration (typical LM4040 SOT-23-3):

• Pin 1: NC (no connect)

• Pin 2: Anode (connect to ground/negative rail in typical use)

• Pin 3: Cathode (regulated reference node)

Confirm exact pin mapping in the datasheet for your specific suffix.

Thermal characteristics: SOT-23-3 thermal performance depends on PCB copper; typical RθJA ~ 250–350°C/W on standard FR-4. Observe power dissipation and derating to keep junction temperature within limits.

Electrical properties (summary): VREF 2.5 V fixed; ±0.64% initial accuracy; 100 ppm/°C tempco; operating shunt current range roughly 0.082 mA to 15 mA; low broadband noise (10 Hz–10 kHz) typically in tens of µVrms.

Lifecycle

Status: Active and widely used in industry. Not nearing discontinuation as of the latest market checks.

Family compatibility: Part of the LM4040 family; multiple tolerance and temperature-grade options exist.

Equivalent or alternative models (verify tolerance grade, temp range, pinout, and package):

• Texas Instruments: LM4040A25, LM4040B25, LM4040D25, LM4040-N 2.5 V variants (different accuracy grades)

• onsemi: LM4040DIZ-2.5 and related LM4040 2.5 V grades

• Vishay: LM4040CIM3-2.5 and similar 2.5 V LM4040 SOT-23 options

• Diodes Incorporated: LM4040A25-13 and similar LM4040 2.5 V references

If you need a drop-in pin-to-pin alternative or different tolerance/temperature grades, contact Y-IC sales via our website for the latest cross-references, lead times, and price breaks.

Key Application Areas

Precision reference for ADCs, DACs, comparators, and op-amp circuits

Power supplies and regulators needing a stable 2.5 V reference

Sensor signal conditioning and instrumentation

Data acquisition systems and test equipment

Industrial, automotive, avionics, and defense electronics (enhanced product lineage)

Portable and battery-powered devices

Isolated and distributed power modules (as a local reference)

Datasheet

Y-IC hosts the most authoritative datasheet for this exact model on our product page. We recommend downloading it here to confirm pinout, electrical limits, thermal data, and application guidance.

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