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Texas Instruments LM4050BIM3-5.0/NOPB
- Part No.:
- LM4050BIM3-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BIM3-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,983
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Product details
Overview
LM4050BIM3-5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a stable 5.0 V reverse breakdown voltage with ±10 mV (±0.2%) initial tolerance at 25°C, 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 56 μA to 15 mA and supports industrial (−40°C to +85°C) and extended (−40°C to +125°C) temperature ranges - ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4050BIM3-5.0/NOPB datasheet, LM4050BIM3-5.0/NOPB pinout, LM4050BIM3-5.0/NOPB application, or LM4050BIM3-5.0/NOPB equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal and noise performance, and two rigorously cross-checked alternative parts for precision analog design.
Technical Context
The LM4050BIM3-5.0/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its dynamic impedance remains ≤0.5 Ω at 1 mA, enabling stable regulation under varying load currents without external capacitors.
It tolerates any capacitive load and requires no output capacitor - unlike series references - simplifying layout while maintaining stability across 56 μA–15 mA operating current and −40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, fixed and unadjustable - sets precise bias point for analog signal chains. |
| Initial Tolerance | ±10 mV (±0.2%) at 25°C - enables single-point calibration in 12-bit+ data acquisition systems. |
| Temp Coefficient | ≤50 ppm/°C over −40°C to +125°C - contributes <0.625 mV drift across full range, critical for field-deployed sensors. |
| Operating Current | 56 μA min to 15 mA max - supports ultra-low-power battery operation and high-current reference buffering. |
| Wideband Noise | 93 μVrms (10 Hz–10 kHz) - limits added noise in precision 16-bit ADC front-ends. |
| Dynamic Impedance | 0.5 Ω typical at 1 mA - ensures minimal load-induced voltage shift during fast digital sampling transitions. |
| Long-Term Stability | 120 ppm after 1000 hrs - guarantees <0.6 mV drift over 1 year, supporting 10-year product lifecycle designs. |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC MO-178AC compliant. Thermal resistance RθJA = 287°C/W (board mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage sense node | Connects to regulated supply rail; sinks all reference current plus load current - determines accuracy via external resistor selection. |
| Anode (Pin 2) | Common return / ground reference | Must be connected to system ground; establishes 0 V reference for cathode voltage - floating anode invalidates regulation. |
| NC (Pin 3) | No internal connection | Left unconnected per TI specification; no routing or soldering required - avoids parasitic coupling or ESD path errors. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Enables zero-component reference design - eliminates capacitor aging, leakage, and board space in wearables and IoT nodes. |
| Tolerates capacitive loads | Stable with >100 nF output capacitance - allows direct connection to ADC sample-hold inputs without phase-margin risk. |
| Fuse/Zener-zap voltage trim | Ensures ±0.2% initial accuracy without post-package trimming - reduces test cost and improves lot-to-lot consistency. |
| Low 56 μA minimum current | Supports 10-year coin-cell operation in remote sensor transmitters - extends battery life beyond competing 100+ μA references. |
| AEC-Q100 Grade 1 option available | LM4050BIM3-5.0/Q1 variant qualified for automotive ambient temperatures up to +125°C - same pinout and specs as /NOPB. |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC and lithium coin-cell power. IC Role / Device Role / Timing Role: Shunt reference providing 5.0 V bias for ADC reference input and op-amp rails. Use Value: 56 μA min current enables >5-year battery life; ±10 mV tolerance ensures 0.02% measurement accuracy without calibration. |
Use Scenario: Industrial PLC analog input module measuring 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision voltage reference for 24-bit delta-sigma ADC reference buffer stage. Use Value: 50 ppm/°C tempco holds gain error <0.008% over −25°C to +70°C operating range; 93 μVrms noise avoids SNR degradation. |
| Energy Management Systems | Precision Audio Components |
Use Scenario: Smart electricity meter with isolated metrology IC and anti-tampering monitoring. IC Role / Device Role / Timing Role: Stable 5.0 V reference for metrology ADC and auxiliary microcontroller VREF. Use Value: 120 ppm long-term stability ensures meter calibration validity over 10-year utility deployment; NC pin simplifies layout isolation. |
Use Scenario: High-fidelity DAC-based headphone amplifier with discrete op-amp output stage. IC Role / Device Role / Timing Role: Low-noise 5.0 V reference for DAC internal bias and analog output stage offset nulling. Use Value: 93 μVrms noise prevents audible hiss; 0.5 Ω dynamic impedance maintains THD+N <0.001% during dynamic audio transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL4050B50IDBZR | Same 5.0 V, ±0.2% tolerance, SOT-23 package, but 75 μA min operating current and 100 μVrms noise. | Higher min current reduces battery life in ultra-low-power designs; higher noise limits use in 18-bit+ systems. | Preferred where TI second-source assurance is required and 19 μA higher quiescent current is acceptable. |
| ADR3450ARJZ-R7 | 5.0 V series reference, ±0.1% initial accuracy, 300 μA quiescent current, requires output capacitor, SOIC-8 package. | Not pin-compatible; larger footprint and higher power draw preclude drop-in replacement in space-constrained SOT-23 layouts. | Select only when series topology is mandated (e.g., low-impedance source needed) and PCB redesign is feasible. |
Compared with TL4050B50IDBZR, LM4050BIM3-5.0/NOPB offers 19 μA lower minimum current and 7 μVrms less noise - directly extending battery life and improving ADC ENOB. Against ADR3450ARJZ-R7, it provides true SOT-23 drop-in capability with 24× lower quiescent current, though lacks series-reference output drive strength.
Availability
LM4050BIM3-5.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial data acquisition, and energy management systems requiring stable component supply, long-term calibration integrity, and consistent SOT-23 sourcing.
Supply support for LM4050BIM3-5.0/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, embedded processing, and connectivity technologies, with over 50 years of analog design heritage and broad manufacturing scale.
The LM4050-N family was engineered for high-accuracy, low-power shunt reference applications in space-constrained and battery-operated systems - emphasizing micropower operation, capacitor-free stability, and robust thermal performance.
FAQ
What is the minimum operating current for LM4050BIM3-5.0/NOPB?
The LM4050BIM3-5.0/NOPB has a minimum operating current of 56 μA at 25°C, rising to 80 μA across the industrial temperature range (−40°C to +85°C) and 90 μA across the extended range (−40°C to +125°C). This value is specified in Section 6.8 of the SNOS455G datasheet and defines the lowest current at which the device maintains its rated 5.0 V output within tolerance. Operating below this current risks loss of regulation and increased voltage error in the LM4050BIM3-5.0/NOPB.
Does LM4050BIM3-5.0/NOPB require an output capacitor?
No, the LM4050BIM3-5.0/NOPB does not require an output capacitor for stability - a key differentiator from most series references. Its internal design ensures unconditional stability with any capacitive load, including direct connection to ADC input capacitors or long PCB traces. This capability is explicitly stated in the "Features" section and validated in Figure 15 (Load Transient Response) of the SNOS455G datasheet. The LM4050BIM3-5.0/NOPB achieves this via optimized dynamic impedance and internal compensation.
What is the temperature coefficient of LM4050BIM3-5.0/NOPB?
The LM4050BIM3-5.0/NOPB has a maximum average temperature coefficient of 50 ppm/°C over the full operating range of −40°C to +125°C. At 25°C, the typical coefficient is ±20 ppm/°C. This parameter quantifies how much the 5.0 V output drifts per degree Celsius change - resulting in a worst-case drift of ±0.625 mV across the full temperature span. This value is guaranteed in the Electrical Characteristics table (Section 6.8) and is critical for maintaining accuracy in uncontrolled environments using the LM4050BIM3-5.0/NOPB.
Is LM4050BIM3-5.0/NOPB pin-compatible with other LM4050 variants?
Yes, all LM4050xIM3-x.x/NOPB variants (e.g., LM4050AIM3-5.0/NOPB, LM4050CIM3-5.0/NOPB) share identical SOT-23 (DBZ) pinout: Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = NC. The LM4050BIM3-5.0/NOPB differs only in initial tolerance (±0.2% vs ±0.1% for 'A' grade or ±0.5% for 'C' grade) and minimum operating current - all electrical and mechanical interfaces remain fully compatible. No PCB changes are needed when upgrading or downgrading grade within the same voltage option.
What is the wideband noise performance of LM4050BIM3-5.0/NOPB?
The LM4050BIM3-5.0/NOPB delivers 93 μVrms wideband noise over the 10 Hz to 10 kHz frequency range, measured at 100 μA operating current. This noise level is specified in Section 6.8 of the SNOS455G datasheet and directly impacts effective number of bits (ENOB) in high-resolution ADC applications. For example, in a 16-bit, 100 kSPS SAR ADC with 5 V full-scale range, this noise contributes ~0.15 LSB RMS - making the LM4050BIM3-5.0/NOPB suitable for precision measurement where sub-LSB error is required.
LM4050BIM3-5.0/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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 93µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BIM3-5.0/NOPB FAQ
1.How can I place an order for LM4050BIM3-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BIM3-5.0/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 LM4050BIM3-5.0/NOPB reliable?
The price and inventory of LM4050BIM3-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BIM3-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050BIM3-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BIM3-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BIM3-5.0/NOPB?
LM4050BIM3-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BIM3-5.0/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 LM4050BIM3-5.0/NOPB?
For technical support, including LM4050BIM3-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BIM3-5.0/NOPB requirements.
6.How does Aetrix verify that LM4050BIM3-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050BIM3-5.0/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 LM4050BIM3-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050BIM3-5.0/NOPB?
All LM4050BIM3-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BIM3-5.0/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 LM4050BIM3-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050BIM3-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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