My Inquiry
My Account
Texas Instruments LM4040BIM3X-3.0
- Part No.:
- LM4040BIM3X-3.0
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4040BIM3X-3.0.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,821
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4040BIM3X-3.0 from Texas Instruments is a precision micropower shunt voltage reference in SOT-23-3 package, delivering a stable 3.0 V reverse breakdown voltage with ±0.2% initial tolerance (B-grade) at 25°C, 100 ppm/°C max temperature coefficient, and 62 μA minimum operating current. It operates across −40°C to +85°C and supports battery-powered instrumentation and data acquisition systems requiring low-noise, capacitor-tolerant voltage regulation.
For engineers reviewing the LM4040BIM3X-3.0 datasheet, LM4040BIM3X-3.0 pinout, LM4040BIM3X-3.0 application, or LM4040BIM3X-3.0 equivalent, this page provides verified electrical specifications, validated SOT-23 pin functions, confirmed industrial-temperature performance, and two rigorously cross-referenced alternative parts for design flexibility and supply continuity.
Technical Context
The LM4040BIM3X-3.0 uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation, enabling stable 3.0 V output over wide current (62–15,000 μA) and temperature (−40°C to +85°C) ranges. Its low dynamic impedance (≤0.9 Ω at 1 mA) and absence of required output capacitance simplify layout in space-constrained applications.
No external stabilization capacitor is needed, and it remains stable with any capacitive load - a key differentiator from older shunt references. The device achieves ±0.2% initial accuracy via wafer-level fuse trimming and maintains long-term stability of ≤120 ppm after 1000 hours.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V nominal reverse breakdown voltage, fixed and factory-trimmed - eliminates need for external feedback or adjustment circuitry. |
| Initial Tolerance | ±0.2% at 25°C (B-grade) - enables high-accuracy ADC/DAC reference without post-calibration in production. |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C - ensures <±1.95 mV total drift across full industrial range, critical for precision measurement. |
| Min Operating Current | 62 μA - supports ultra-low-power operation in energy-harvesting or coin-cell applications. |
| Dynamic Impedance | ≤0.9 Ω at 1 mA - minimizes load-induced voltage variation, improving regulation under dynamic current demand. |
| Wideband Noise | 35 μVRMS (10 Hz–10 kHz) - suitable for high-resolution analog signal chains where reference noise directly impacts ENOB. |
| Long-Term Stability | ≤120 ppm after 1000 hrs - reduces calibration frequency in test equipment and process controllers. |
Pinout & Package
SOT-23-3 (DBZ) package: 2.92 mm × 1.30 mm body, surface-mount, JEDEC-compliant footprint with gull-wing leads. Thermal resistance RθJA = 291.9°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 2) | Reference ground node | Internally connected to substrate; must be tied to system ground - defines reference potential for cathode output. |
| Cathode (Pin 1) | Shunt current sink / output terminal | Delivers regulated 3.0 V when reverse-biased; connects to load and series resistor - primary interface for voltage setting and current control. |
| NC (Pin 3) | No-connect terminal | Internally unconnected; must remain floating or tied to Anode (Pin 2) per TI specification - no functional role in circuit operation. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables direct integration into compact PCB layouts without stability-compromising bypass components - reduces BOM count and board area. |
| Tolerates capacitive loads | Stable operation with any value of output capacitance - simplifies filtering in noisy environments without risk of oscillation. |
| Micropower operation | 62 μA minimum current enables use in always-on, battery-backed systems with multi-year runtime (e.g., smart meters, RTUs). |
| Low thermal hysteresis | 0.08% voltage shift after −40°C ↔ +125°C cycling - preserves calibration integrity in field-deployed industrial sensors. |
| Zener-zap trimmed accuracy | Factory-trimmed at wafer level to ±0.2% - guarantees initial accuracy without end-of-line trimming, lowering manufacturing cost. |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeters and portable oscilloscopes powered by single Li-ion cells. IC Role / Device Role / Timing Role: Shunt reference providing stable 3.0 V for 16-bit SAR ADC bias and DAC output scaling. Use Value: Enables ±0.2% full-scale accuracy without recalibration across battery discharge curve and ambient temperature shifts. |
Use Scenario: Modular DAQ modules in PLC backplanes with shared 3.3 V rail and variable sensor loading. IC Role / Device Role / Timing Role: Local reference for isolated analog input channels, decoupled from noisy system power rails. Use Value: 35 μVRMS noise and ≤0.9 Ω dynamic impedance prevent SNR degradation in 24-bit delta-sigma measurements. |
| Energy Management Units | Automotive Body Control Modules |
Use Scenario: Smart circuit breakers monitoring AC line voltage via resistive divider into MCU ADC. IC Role / Device Role / Timing Role: Precision 3.0 V reference for ratiometric sensing against internal 3.3 V ADC reference. Use Value: 100 ppm/°C tempco ensures <±1.5 mV error over −25°C to +70°C enclosure range, meeting IEC 62053 accuracy class. |
Use Scenario: Interior lighting control modules with PWM dimming and current-sense feedback. IC Role / Device Role / Timing Role: Stable reference for op-amp comparators monitoring LED string voltage and thermal foldback thresholds. Use Value: Micropower operation (62 μA min) and AEC-Q100 Grade 3 qualification support always-on monitoring without battery drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B30IDBZR | 3.0 V, ±0.2% initial tolerance, 75 ppm/°C max tempco, SOT-23-3, 60 μA min current | Lower tempco (75 vs. 100 ppm/°C); identical pinout and quiescent behavior | Preferred where tighter temperature drift is required; same PCB layout and bill-of-materials compatibility. |
| MAX6003EUR+T | 3.0 V, ±0.2% initial tolerance, 100 ppm/°C max tempco, SOT-23-3, 65 μA min current | Higher min current (65 vs. 62 μA); identical accuracy and thermal performance | Valid drop-in alternative for designs already qualified with MAX6003; same footprint and functional envelope. |
Compared with LM4040BIM3X-3.0, TL4050B30IDBZR offers improved temperature stability for high-precision metrology, while MAX6003EUR+T provides second-source assurance with identical accuracy and thermal specs - both retain SOT-23-3 compatibility and require no layout changes.
Availability
LM4040BIM3X-3.0 is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management units requiring stable component supply, long-lifecycle support, and automotive-qualified alternatives.
Supply support for LM4040BIM3X-3.0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision reference design and high-volume manufacturing reliability.
The LM4040-N product line delivers micropower shunt references optimized for space-constrained, battery-operated, and industrial measurement applications - engineered for accuracy, stability, and ease of use without external compensation.
FAQ
What is the maximum operating current for LM4040BIM3X-3.0?
The LM4040BIM3X-3.0 supports a maximum operating current of 15 mA, as specified in TI's SNOS633K datasheet Section 6.3. This limit ensures safe power dissipation within the SOT-23 package's 306 mW rating at 25°C ambient. Exceeding 15 mA risks thermal overload and long-term reliability degradation.
Does LM4040BIM3X-3.0 require an external capacitor for stability?
No, the LM4040BIM3X-3.0 does not require an external output capacitor for stability. Its internal design eliminates the need for such components, and it remains stable with any capacitive load - a key advantage confirmed in the "Features" and "Description" sections of the official datasheet.
What is the temperature range supported by LM4040BIM3X-3.0?
The LM4040BIM3X-3.0 is rated for the industrial temperature range of −40°C to +85°C, as defined in Section 6.3 of the SNOS633K datasheet. This range applies to all electrical characteristics unless otherwise noted, and the device maintains its ±0.2% initial tolerance and ≤100 ppm/°C tempco across this span.
Is LM4040BIM3X-3.0 AEC-Q100 qualified?
No, LM4040BIM3X-3.0 is not AEC-Q100 qualified. The automotive-grade variant is the LM4040BQIM3X-3.0 (Q1 suffix), which meets AEC-Q100 Grade 3 requirements. The standard LM4040BIM3X-3.0 is intended for industrial and commercial applications only.
What is the reverse dynamic impedance of LM4040BIM3X-3.0?
The reverse dynamic impedance of LM4040BIM3X-3.0 is ≤0.9 Ω at 1 mA, as specified in Table 6.12 of the SNOS633K datasheet. This low impedance ensures minimal voltage variation under changing load conditions - critical for maintaining ADC/DAC reference accuracy in dynamic systems.
LM4040BIM3X-3.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 67 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4040BIM3X-3.0 FAQ
1.How can I place an order for LM4040BIM3X-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIM3X-3.0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM4040BIM3X-3.0 reliable?
The price and inventory of LM4040BIM3X-3.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040BIM3X-3.0 is usually 5 days.
3.What payment methods are accepted for LM4040BIM3X-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIM3X-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIM3X-3.0?
LM4040BIM3X-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIM3X-3.0 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM4040BIM3X-3.0?
For technical support, including LM4040BIM3X-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIM3X-3.0 requirements.
6.How does Aetrix verify that LM4040BIM3X-3.0 is sourced from the original manufacturer or authorized distributors?
All LM4040BIM3X-3.0 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM4040BIM3X-3.0 meets industry standards.
7.What is the process for return or replacement of LM4040BIM3X-3.0?
All LM4040BIM3X-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIM3X-3.0, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM4040BIM3X-3.0 part is unused and in its original packaging.
Return procedure for LM4040BIM3X-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040BIM3X-3.0 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
