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Texas Instruments LM4050QBIM3-2.5/NOPB
- Part No.:
- LM4050QBIM3-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBIM3-2.5/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,982
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Product details
Overview
LM4050QBIM3-2.5/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 2.500 V reverse breakdown voltage with ±2.5 mV (±0.1%) initial tolerance at 25°C, 41 μVrms wideband noise (10 Hz–10 kHz), and operation across −40°C to 125°C for automotive-grade applications. It serves as a stable, low-drift reference in high-resolution ADC/DAC biasing, battery-powered instrumentation, and energy metering circuits.
For engineers reviewing the LM4050QBIM3-2.5/NOPB datasheet, LM4050QBIM3-2.5/NOPB pinout, LM4050QBIM3-2.5/NOPB application, or LM4050QBIM3-2.5/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 50 ppm/°C max temperature coefficient, 60 μA min operating current, no-output-capacitor stability, and compatibility with capacitive loads in space-constrained designs.
Technical Context
The LM4050QBIM3-2.5/NOPB implements a curvature-corrected bandgap shunt reference architecture with internal Zener-zap and fuse trimming for ±0.1% initial accuracy. Its dynamic impedance is 0.3 Ω at 1 mA, enabling tight regulation under varying load currents from 60 μA to 15 mA.
It operates as a two-terminal device: cathode accepts input current and regulates voltage relative to anode (ground), with pin 3 unconnected (NC). Thermal hysteresis is limited to 0.7 mV after cycling between −40°C and 125°C, and long-term stability is 120 ppm over 1000 hours at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V nominal at 100 μA - enables precise 12-bit ADC full-scale alignment with 1 mV LSB when paired with 2.5 V rails |
| Initial Tolerance | ±2.5 mV (±0.1%) at 25°C - supports high-accuracy calibration without post-manufacture trimming |
| Tempco (max) | 50 ppm/°C over −40°C to 125°C - ensures < ±0.31 mV drift across full automotive range |
| Wideband Noise | 41 μVrms (10 Hz–10 kHz) - minimizes quantization error in 16-bit+ data acquisition systems |
| Min Operating Current | 60 μA at 25°C - allows ultra-low-power operation in coin-cell or energy-harvesting systems |
| Dynamic Impedance | 0.3 Ω at 1 mA - maintains output stability despite fast load transients up to 15 mA |
| Thermal Hysteresis | 0.7 mV - limits repeatability error after thermal cycling in field-deployed equipment |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, surface-mount, rated for −40°C to 125°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Input/Regulated node | Accepts shunt current (60 μA–15 mA); voltage regulated between this pin and Anode |
| Anode (Pin 2) | Reference ground | Common return path; must be connected to system ground for proper regulation |
| NC (Pin 3) | No internal connection | Must be left floating or tied to Pin 2 per TI layout guidance-prevents EMI-induced instability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for automotive applications with guaranteed operation from −40°C to 125°C ambient |
| No output capacitor required | Internally compensated for unconditional stability-even with 0–100 nF capacitive loads |
| Low micropower operation | 60 μA minimum current enables >10-year battery life in portable gas meters and IoT sensors |
| Fixed 2.5 V output | Eliminates external resistor network-reduces BOM count and layout area in compact PCBs |
| Low dynamic impedance | 0.3 Ω ensures < 1 mV load regulation error across 15 mA current swing |
Applications
| Battery-Powered Instrumentation | Automotive Energy Metering |
|---|---|
Use Scenario: Portable multimeter with 16-bit SAR ADC powered by CR2032 cell. IC Role / Device Role / Timing Role: Precision 2.5 V reference for ADC full-scale calibration and offset nulling. Use Value: Enables ±0.005% measurement accuracy over temperature and battery discharge, with 60 μA quiescent draw extending operational life beyond 5 years. |
Use Scenario: Onboard EV battery pack monitor measuring cell voltages and SOC. IC Role / Device Role / Timing Role: Stable 2.5 V reference for isolated sigma-delta ADC front-end in high-noise traction inverter environment. Use Value: AEC-Q100 Grade 1 rating and 50 ppm/°C tempco ensure consistent 12-bit resolution across −40°C cold cranking to 125°C under-hood conditions. |
| Industrial Process Control Transmitter | Precision Audio DAC Reference |
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART digital overlay. IC Role / Device Role / Timing Role: Shunt reference supplying excitation and ADC reference for bridge sensor interface. Use Value: 41 μVrms noise and 0.3 Ω impedance suppress 50/60 Hz line interference and improve 16-bit effective resolution in noisy factory settings. |
Use Scenario: High-fidelity audio DAC in studio-grade headphone amplifier with discrete op-amp output stage. IC Role / Device Role / Timing Role: Low-noise 2.5 V reference for DAC VREF input, decoupled from noisy digital supply rails. Use Value: 41 μVrms noise floor directly translates to >108 dB SNR-meeting THX and ESS-certified performance thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3025AIDBZR | 2.5 V, ±0.2% initial accuracy, 50 ppm/°C tempco, 50 μA min current, SOT-23 | Non-automotive grade; industrial temp only (−40°C to 85°C) | Preferred for cost-sensitive industrial designs where AEC-Q100 compliance is unnecessary |
| ADR3425ARJZ-R7 | 2.5 V, ±0.1% initial accuracy, 10 ppm/°C tempco, 120 μA min current, SOT-23 | Lower tempco but higher min current; not AEC-Q100 qualified | Selected when ultra-low drift (< ±0.05 mV over temp) outweighs automotive qualification needs |
Compared with LM4050QBIM3-2.5/NOPB, REF3025AIDBZR offers lower cost and same package but lacks automotive qualification and has looser initial tolerance; ADR3425ARJZ-R7 delivers superior temperature stability but requires higher minimum current and does not support extended-temperature automotive use.
Availability
LM4050QBIM3-2.5/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive energy metering, and industrial process control requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4050QBIM3-2.5/NOPB 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 analog ICs and automotive-qualified components.
The LM4050-N series was designed specifically for space-constrained, high-accuracy shunt reference applications demanding micropower operation, low noise, and robust thermal performance-targeting automotive, industrial, and portable test equipment markets.
FAQ
What is the maximum operating current for LM4050QBIM3-2.5/NOPB?
The LM4050QBIM3-2.5/NOPB supports a maximum operating current of 15 mA. Exceeding this value risks exceeding the 280 mW power dissipation limit at 25°C ambient and may cause thermal shutdown or permanent damage. Derating is required above 25°C using RθJA = 287°C/W.
Does LM4050QBIM3-2.5/NOPB require an external output capacitor?
No, LM4050QBIM3-2.5/NOPB is internally compensated and stable without any output capacitor. It tolerates capacitive loads up to 100 nF while maintaining regulation-eliminating board space and cost associated with external bypass components.
Is LM4050QBIM3-2.5/NOPB qualified for automotive applications?
Yes, LM4050QBIM3-2.5/NOPB is LM4050-N-Q1 variant and AEC-Q100 Grade 1 qualified, rated for operation from −40°C to 125°C ambient temperature and manufactured on an automotive-grade flow with enhanced reliability testing.
What is the thermal hysteresis specification for LM4050QBIM3-2.5/NOPB?
The thermal hysteresis of LM4050QBIM3-2.5/NOPB is 0.7 mV, defined as the voltage shift measured at 25°C before and after cycling between −40°C and 125°C. This parameter reflects mechanical stress-induced drift in the SOT-23 package and impacts repeatability in field-referenced calibrations.
Can LM4050QBIM3-2.5/NOPB be used with a 3.3 V supply?
Yes, LM4050QBIM3-2.5/NOPB can operate from a 3.3 V supply when paired with an appropriate series resistor (RS). For example, with 3.3 V input and 2.5 V output, RS must limit cathode current between 60 μA and 15 mA-e.g., 10 kΩ yields ~80 μA, well within safe operating range.
LM4050QBIM3-2.5/NOPB 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:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 41µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QBIM3-2.5/NOPB FAQ
1.How can I place an order for LM4050QBIM3-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBIM3-2.5/NOPB 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 LM4050QBIM3-2.5/NOPB reliable?
The price and inventory of LM4050QBIM3-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBIM3-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBIM3-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBIM3-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBIM3-2.5/NOPB?
LM4050QBIM3-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBIM3-2.5/NOPB 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 LM4050QBIM3-2.5/NOPB?
For technical support, including LM4050QBIM3-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBIM3-2.5/NOPB requirements.
6.How does Aetrix verify that LM4050QBIM3-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBIM3-2.5/NOPB 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 LM4050QBIM3-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBIM3-2.5/NOPB?
All LM4050QBIM3-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBIM3-2.5/NOPB, 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 LM4050QBIM3-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBIM3-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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