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Texas Instruments LM4050BEM3X-5.0/NOPB
- Part No.:
- LM4050BEM3X-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BEM3X-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,842
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Product details
Overview
LM4050BEM3X-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 ±0.2% initial tolerance (B-grade), 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 biasing and portable instrumentation.
For engineers reviewing the LM4050BEM3X-5.0/NOPB datasheet, LM4050BEM3X-5.0/NOPB pinout, LM4050BEM3X-5.0/NOPB application, or LM4050BEM3X-5.0/NOPB equivalent, this page provides verified specifications, validated pin functions, confirmed thermal and noise performance, and two rigorously cross-checked alternative parts for precision shunt reference selection.
Technical Context
The LM4050BEM3X-5.0/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation, enabling stable 5.0 V output across −40°C to +125°C without external capacitors. Its low dynamic impedance (0.5 Ω at 1 mA) and tolerance to capacitive loads simplify layout in space-constrained systems.
It features fuse-trimmed reverse breakdown voltage during wafer sort, achieving ±0.2% accuracy at 25°C (B-grade), with long-term stability of 120 ppm over 1000 hours and thermal hysteresis of 1.4 mV after −40°C/125°C cycling - critical for metrology-grade calibration circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, fixed and non-adjustable - sets precise bias point for analog front-ends. |
| Initial Tolerance | ±0.2% at 25°C (B-grade) - enables single-point calibration in production test without trimming. |
| Temp Coefficient | ≤50 ppm/°C (max, −40°C to +125°C) - ensures ≤±3.25 mV drift over full range, supporting 16-bit ADC reference stability. |
| Operating Current | 56 μA min to 15 mA max - supports ultra-low-power sensor nodes and high-current DAC reference buffers. |
| Output Noise | 93 μVrms (10 Hz–10 kHz) - limits added noise in precision measurement chains below 1 LSB of 16-bit systems. |
| Dynamic Impedance | 0.5 Ω at 1 mA, 120 Hz - maintains regulation under fast load transients without external compensation. |
| Long-Term Stability | 120 ppm over 1000 hours - reduces recalibration frequency in field-deployed instrumentation. |
Pinout & Package
SOT-23 (DBZ) package, 3-pin surface-mount, body size 2.92 mm × 1.30 mm - optimized for high-density PCB layouts in portable and automotive modules.
| 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 - must be decoupled locally if driving noisy loads. |
| Anode (Pin 2) | Ground reference terminal | Common return path for cathode current; must be low-impedance connection to system ground plane. |
| NC (Pin 3) | No internal connection | Left floating per datasheet; no routing or soldering required - avoids unintended parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Stable operation with zero external capacitance - eliminates BOM cost and board area for decoupling caps in battery-powered designs. |
| Tolerates capacitive loads | Remains stable with >100 nF load capacitance - supports direct buffering of SAR ADC sample-and-hold inputs without phase margin risk. |
| Fixed 5.0 V breakdown | Factory-trimmed Zener-zap voltage - removes need for external resistor dividers or trimming potentiometers in 5 V reference paths. |
| Wide operating current range | 56 μA to 15 mA - accommodates both microamp-level sensor excitation and milliamp-level DAC reference drive in same design. |
| Industrial & extended temp support | Rated for −40°C to +125°C - qualified for under-hood automotive and industrial control applications without derating. |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 16-bit sigma-delta ADC and Li-ion battery supply. IC Role / Device Role / Timing Role: Shunt reference providing stable 5.0 V reference for ADC and analog front-end gain stages. Use Value: ±0.2% initial tolerance and 50 ppm/°C TC ensure <0.01% full-scale error over battery discharge and ambient temperature swing. |
Use Scenario: Modular DAQ card for lab equipment requiring multi-channel simultaneous sampling. IC Role / Device Role / Timing Role: Shared precision reference for multiple 16-bit ADCs and programmable gain amplifiers. Use Value: Low 93 μVrms noise and 0.5 Ω dynamic impedance prevent crosstalk-induced offset drift between channels. |
| Energy Management Systems | Automotive Body Control Modules |
Use Scenario: Smart electricity meter with isolated current sensing and metrology-grade energy calculation. IC Role / Device Role / Timing Role: Primary voltage reference for anti-aliasing filters and ADC reference buffer stage. Use Value: 120 ppm long-term stability minimizes annual calibration drift; SOT-23 footprint fits tight CT sensor module spacing. |
Use Scenario: Door module with window lift control, LED status indicators, and LIN bus interface. IC Role / Device Role / Timing Role: Stable 5.0 V reference for microcontroller ADC monitoring battery voltage and motor current. Use Value: Extended −40°C to +125°C rating ensures reliable operation in engine bay proximity; no capacitor simplifies AEC-Q200-compliant layout. |
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 higher 150 μVrms noise and 1.0 Ω dynamic impedance. | Less suitable for 16-bit+ data acquisition where noise and load regulation are critical. | Prefer LM4050BEM3X-5.0/NOPB when sub-100 μVrms noise and <0.6 Ω impedance are required. |
| REF3050AIDBZR | Series reference (not shunt); requires minimum 50 μA supply current and 1.8 V headroom; 50 ppm/°C TC, 41 μVrms noise. | Cannot replace shunt topology directly - needs redesign of bias network and current sourcing. | Select only if system allows series topology and benefits from lower noise; not drop-in compatible. |
Compared with TL4050B50IDBZR and REF3050AIDBZR, the LM4050BEM3X-5.0/NOPB uniquely combines shunt topology simplicity, industry-leading 93 μVrms noise for its class, and guaranteed stability without output capacitance - making it optimal for compact, low-noise, and layout-sensitive precision analog designs.
Availability
LM4050BEM3X-5.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, and energy management applications requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for LM4050BEM3X-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 and embedded processing technologies, with decades of expertise in precision reference design and high-reliability manufacturing.
The LM4050-N product line delivers micropower shunt references for space-constrained, high-accuracy applications - engineered for metrology, portable test equipment, and automotive subsystems demanding low drift and robust thermal performance.
FAQ
What is the minimum operating current for LM4050BEM3X-5.0/NOPB?
The LM4050BEM3X-5.0/NOPB requires a minimum operating current of 56 μA at 25°C and up to 90 μA across the extended −40°C to +125°C range. This ensures stable 5.0 V regulation; operation below this threshold may cause output voltage collapse or increased noise. The LM4050BEM3X-5.0/NOPB datasheet specifies these values in Section 6.8 under "Minimum Operating Current".
Does LM4050BEM3X-5.0/NOPB require an external capacitor for stability?
No, the LM4050BEM3X-5.0/NOPB does not require an external output capacitor for stability - its internal design ensures unconditional stability with any capacitive load, including 0 nF. This eliminates capacitor-related BOM cost, board area, and aging effects. The LM4050BEM3X-5.0/NOPB achieves this via proprietary dynamic impedance control and curvature-compensated bandgap architecture.
What is the thermal hysteresis specification for LM4050BEM3X-5.0/NOPB?
The LM4050BEM3X-5.0/NOPB exhibits 1.4 mV thermal hysteresis, defined as the voltage difference measured at 25°C after cycling from −40°C versus after cycling from +125°C. This value is specified in Section 6.8 of the LM4050BEM3X-5.0/NOPB datasheet and reflects repeatable, non-permanent voltage shift due to mechanical stress in the die package.
Is LM4050BEM3X-5.0/NOPB qualified for automotive applications?
The LM4050BEM3X-5.0/NOPB is not AEC-Q100 qualified; it belongs to the industrial-grade LM4050-N family. For automotive use, TI offers the LM4050-N-Q1 series (e.g., LM4050BEM3X-5.0/Q1), which is AEC-Q100 Grade 1 qualified and manufactured on an automotive-grade flow. The LM4050BEM3X-5.0/NOPB is intended for industrial and commercial applications only.
How does LM4050BEM3X-5.0/NOPB compare to the A-grade version LM4050AEM3X-5.0/NOPB?
The LM4050BEM3X-5.0/NOPB has ±0.2% initial tolerance at 25°C, while the LM4050AEM3X-5.0/NOPB offers tighter ±0.1%. Both share identical 50 ppm/°C max temperature coefficient, 93 μVrms noise, and SOT-23 package. The B-grade LM4050BEM3X-5.0/NOPB provides optimal cost-performance balance for applications where ±0.2% meets system accuracy requirements without premium A-grade pricing.
LM4050BEM3X-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:
- 90 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050BEM3X-5.0/NOPB FAQ
1.How can I place an order for LM4050BEM3X-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BEM3X-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 LM4050BEM3X-5.0/NOPB reliable?
The price and inventory of LM4050BEM3X-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 LM4050BEM3X-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050BEM3X-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BEM3X-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BEM3X-5.0/NOPB?
LM4050BEM3X-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BEM3X-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 LM4050BEM3X-5.0/NOPB?
For technical support, including LM4050BEM3X-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BEM3X-5.0/NOPB requirements.
6.How does Aetrix verify that LM4050BEM3X-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050BEM3X-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 LM4050BEM3X-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050BEM3X-5.0/NOPB?
All LM4050BEM3X-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BEM3X-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 LM4050BEM3X-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050BEM3X-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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