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Texas Instruments LM4050BEM3X-10/NOPB
- Part No.:
- LM4050BEM3X-10/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BEM3X-10/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,547
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Product details
Overview
LM4050BEM3X-10/NOPB from Texas Instruments is a precision micropower shunt voltage reference with 10 V nominal reverse breakdown voltage, ±0.2% initial tolerance (B-grade), 50 ppm/°C max temperature coefficient, and 100 μA minimum operating current. It operates across −40°C to 125°C and delivers stable reference voltage in space-constrained analog signal chains for high-resolution ADCs and portable instrumentation.
For engineers reviewing the LM4050BEM3X-10/NOPB datasheet, LM4050BEM3X-10/NOPB pinout, LM4050BEM3X-10/NOPB application, or LM4050BEM3X-10/NOPB equivalent, key selection criteria include its SOT-23 package compatibility, no-output-capacitor-required operation, capacitive load tolerance, 15 mA max operating current, and industrial/automotive-grade thermal performance.
Technical Context
The LM4050BEM3X-10/NOPB uses bandgap reference architecture with curvature-corrected temperature drift compensation and Zener-zap trim at wafer sort to achieve ±0.2% accuracy at 25°C. Its shunt topology requires an external series resistor to set operating current and regulates by sinking variable current to maintain fixed cathode-to-anode voltage.
It exhibits low dynamic impedance (0.7 Ω typical at 1 mA), wideband noise of 150 μVrms (10 Hz–10 kHz), and thermal hysteresis of 2.8 mV over −40°C to 125°C cycling - enabling stable performance in battery-powered and energy-managed systems where supply headroom is limited.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10 V nominal reverse breakdown voltage, calibrated at 150 μA test current |
| Initial Tolerance | ±0.2% at 25°C (B-grade), verified via fuse/Zener-zap trim during wafer sort |
| Temp Coefficient | 50 ppm/°C maximum over −40°C to 125°C, enabling <±10 mV drift in full range |
| Min Operating Current | 100 μA (typical), defining lowest bias for stable regulation in ultra-low-power designs |
| Max Operating Current | 15 mA, setting upper limit for series resistor sizing and power dissipation margin |
| Dynamic Impedance | 0.7 Ω typical at 1 mA, ensuring minimal load-induced voltage shift under varying sink current |
| Wideband Noise | 150 μVrms (10 Hz–10 kHz), critical for high-SNR data acquisition front-ends |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC MO-178AC compliant. Anode (Pin 2) connects to system ground; Cathode (Pin 1) supplies regulated 10 V reference node; Pin 3 is NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current output / reference voltage node | Connects to regulated 10 V output; sinks variable current to maintain precise voltage |
| Anode (Pin 2) | Reference ground return | Mandatory connection to system ground; defines 0 V reference for cathode voltage |
| NC (Pin 3) | No internal connection | Must remain unconnected or floating; no PCB trace or solder mask required |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation without external bypass cap - reduces BOM count and board area in compact layouts |
| Tolerates capacitive loads | Remains stable with any value of output capacitance - simplifies filtering for noise-sensitive ADC references |
| Fixed 10 V breakdown voltage | Eliminates need for external resistor divider; enables direct interface with 10 V full-scale converters |
| Low 100 μA min operating current | Supports >10-year battery life in always-on sensor nodes and portable test equipment |
| −40°C to 125°C extended temp range | Validated for automotive under-hood and industrial control environments without derating |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 5½-digit resolution requiring stable 10 V reference for autoranging. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 10 V reference for successive-approximation ADC and DAC calibration. Use Value: ±0.2% initial tolerance and 50 ppm/°C TC ensure measurement accuracy remains within spec across battery discharge and ambient temperature swings. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA sensor signals with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Precision shunt reference establishing 10 V full-scale range for ADC reference buffer stage. Use Value: 150 μVrms noise and 0.7 Ω dynamic impedance minimize code spread and improve effective number of bits (ENOB). |
| Energy Management Units | Automotive Battery Monitoring |
Use Scenario: Smart grid metering IC monitoring AC line voltage with isolated 10 V reference for ADC scaling. IC Role / Device Role / Timing Role: Low-power shunt reference supplying regulated 10 V to isolated sigma-delta modulator reference input. Use Value: 100 μA min operating current enables operation from auxiliary winding-derived supply without burdening main power path. |
Use Scenario: EV battery pack monitor IC measuring cell voltages up to 4.2 V per cell using 10 V reference for gain-setting resistors. IC Role / Device Role / Timing Role: High-stability shunt reference maintaining 10 V reference across −40°C to 125°C under hood conditions. Use Value: Extended temperature qualification and 2.8 mV thermal hysteresis ensure repeatable cell voltage readings after thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431CDBZR | Adjustable 2.5 V reference (requires two external resistors); 2% initial tolerance; 500 mV dropout headroom needed | Not suitable for fixed 10 V use without resistor network; higher quiescent current (1 mA typical) | Select when design requires programmable reference voltage or cost sensitivity outweighs precision needs |
| REF5010AIDR | Series reference; 10 V output; ±0.05% initial tolerance; 3 μVp-p noise; requires 1.2 V headroom | Higher accuracy and lower noise but demands higher supply voltage and external decoupling | Select for metrology-grade applications where 10× tighter tolerance and 50× lower noise justify added complexity and cost |
Compared with TL431CDBZR and REF5010AIDR, the LM4050BEM3X-10/NOPB uniquely combines fixed 10 V output, SOT-23 footprint, zero external capacitor requirement, and micropower operation - making it optimal for space- and energy-constrained shunt reference roles where simplicity and reliability are prioritized over ultra-high precision.
Availability
LM4050BEM3X-10/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management units requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for LM4050BEM3X-10/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 reference design and high-reliability manufacturing.
The LM4050-N product line delivers micropower shunt voltage references optimized for space-constrained, battery-operated, and thermally demanding applications - emphasizing accuracy, stability, and ease of integration without external components.
FAQ
What is the minimum operating current for LM4050BEM3X-10/NOPB?
The LM4050BEM3X-10/NOPB requires a minimum operating current of 100 μA to maintain regulation within specification. This value is confirmed in Section 6.10 of the SNOS455G datasheet for the 10-V option at 25°C. Below this threshold, the device may not sustain its rated 10 V output voltage or specified tolerance. The LM4050BEM3X-10/NOPB remains functional down to 60 μA in some conditions, but 100 μA is the guaranteed minimum for full-spec operation.
Does LM4050BEM3X-10/NOPB require an output capacitor?
No, the LM4050BEM3X-10/NOPB does not require an output capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including zero capacitance. This eliminates the need for external bypass components and simplifies layout - a key advantage over many competing shunt references. The LM4050BEM3X-10/NOPB achieves this through proprietary dynamic impedance control and internal compensation.
What is the temperature coefficient of LM4050BEM3X-10/NOPB?
The LM4050BEM3X-10/NOPB has a maximum temperature coefficient of 50 ppm/°C over the full −40°C to 125°C range. This means its output voltage drift is bounded to ±5 mV across a 100°C span (e.g., from 25°C to 125°C). The specification is verified per Section 6.10 of the SNOS455G datasheet and applies to the B-grade variant. The LM4050BEM3X-10/NOPB achieves this via curvature-corrected bandgap design and post-trim calibration.
Is LM4050BEM3X-10/NOPB qualified for automotive applications?
The LM4050BEM3X-10/NOPB is not AEC-Q100 qualified. Only the LM4050-N-Q1 variants (e.g., LM4050BEM3X-10Q1) carry AEC-Q100 Grade 1 qualification. The LM4050BEM3X-10/NOPB is rated for industrial and extended temperature operation (−40°C to 125°C) but lacks automotive-specific stress testing, failure analysis, and traceability documentation required for automotive use. For automotive designs, specify the Q1 suffix version.
What package type does LM4050BEM3X-10/NOPB use?
The LM4050BEM3X-10/NOPB uses the SOT-23 (DBZ) package: a 3-pin, surface-mount plastic package measuring 2.92 mm × 1.30 mm. Pin 1 is Cathode, Pin 2 is Anode (ground), and Pin 3 is NC (no internal connection). This package is JEDEC MO-178AC compliant and supports reflow soldering per IPC/JEDEC J-STD-020. The LM4050BEM3X-10/NOPB's small footprint makes it ideal for high-density PCB layouts.
LM4050BEM3X-10/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):
- 10V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 150µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 110 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BEM3X-10/NOPB FAQ
1.How can I place an order for LM4050BEM3X-10/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BEM3X-10/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 LM4050BEM3X-10/NOPB reliable?
The price and inventory of LM4050BEM3X-10/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BEM3X-10/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050BEM3X-10/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BEM3X-10/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BEM3X-10/NOPB?
LM4050BEM3X-10/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BEM3X-10/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 LM4050BEM3X-10/NOPB?
For technical support, including LM4050BEM3X-10/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BEM3X-10/NOPB requirements.
6.How does Aetrix verify that LM4050BEM3X-10/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050BEM3X-10/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 LM4050BEM3X-10/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050BEM3X-10/NOPB?
All LM4050BEM3X-10/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BEM3X-10/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 LM4050BEM3X-10/NOPB part is unused and in its original packaging.
Return procedure for LM4050BEM3X-10/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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