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Texas Instruments LM4050BEM3-5.0/NOPB
- Part No.:
- LM4050BEM3-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050BEM3-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,024
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Product details
Overview
LM4050BEM3-5.0/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 LM4050BEM3-5.0/NOPB datasheet, LM4050BEM3-5.0/NOPB pinout, LM4050BEM3-5.0/NOPB application, or LM4050BEM3-5.0/NOPB equivalent, key selection criteria include guaranteed 5.0 V output tolerance across temperature, no-output-capacitor operation, capacitive load stability, low dynamic impedance (0.5 Ω), and AEC-Q100 Grade 1 qualification of the automotive variant (LM4050BEM3-5.0Q1/NOPB).
Technical Context
The LM4050BEM3-5.0/NOPB uses bandgap-based Zener-zap trimmed shunt architecture with curvature-corrected temperature drift compensation. Its two-terminal configuration requires only an external current source and load, eliminating series pass transistors or feedback loops.
It achieves stability without output capacitance by integrating low dynamic impedance (0.5 Ω typical at 1 mA) and inherent phase margin against capacitive loads up to 10 μF. Trimmed during wafer sort, the B-grade device guarantees ±0.2% initial accuracy and maintains ≤50 ppm/°C tempco over full operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage, fixed and non-adjustable |
| Initial Tolerance | ±10 mV (±0.2%) at 25°C - enables direct use in 12-bit ADC references without trimming |
| Tempco | ≤50 ppm/°C max over −40°C to +125°C - ensures <±0.65 mV drift across full range |
| Operating Current | 56 μA min to 15 mA max - supports ultra-low-power sensor nodes and high-current DAC buffers |
| Noise (10 Hz–10 kHz) | 93 μVrms typical - suitable for 16-bit SAR ADC reference applications |
| Dynamic Impedance | 0.5 Ω typical at 1 mA - minimizes load-regulation error (<8 mV from 1 mA to 15 mA) |
| Long-Term Stability | 120 ppm over 1000 hrs - predictable aging behavior for calibration-critical systems |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, 3-pin surface-mount with exposed pad not electrically connected. Pin 1 = Cathode (shunt current input), Pin 2 = Anode (ground/common), Pin 3 = NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current sink and reference voltage node | Connects to regulated voltage rail; absorbs excess current to maintain 5.0 V at cathode-to-anode |
| Anode (Pin 2) | Reference ground return | Must be tied to system ground; defines 0 V reference for output voltage measurement |
| 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 | Enables space-constrained designs (e.g., wearables) without stability-compromising external C |
| Tolerates capacitive loads | Stable with up to 10 μF output capacitance - simplifies filtering for noisy supply rails |
| Fixed 5.0 V breakdown | Eliminates external resistor network; reduces BOM count and layout sensitivity |
| Low 56 μA minimum current | Supports battery life >10 years in 10 μA sleep-mode IoT sensors with periodic 5 V reference activation |
| Industrial & extended temp range | Validated operation from −40°C to +125°C - suitable for under-hood automotive and industrial PLC modules |
Applications
| Portable Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Handheld multimeter with 16-bit sigma-delta ADC requiring stable 5 V reference for ratiometric measurements. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 5.0 V bias to ADC's VREF+ input. Use Value: ±0.2% initial tolerance and 50 ppm/°C tempco ensure <±0.01% full-scale error across operating temperature without calibration. | Use Scenario: Modular DAQ card for lab equipment with multiple 12-bit SAR ADCs sharing a common reference rail. IC Role / Device Role / Timing Role: Centralized 5.0 V shunt reference sourcing up to 15 mA for parallel ADC VREF inputs. Use Value: 0.5 Ω dynamic impedance limits load regulation error to <8 mV across full current range, preserving channel-to-channel matching. |
| Energy Management Units | Precision Audio Components |
Use Scenario: Smart electricity meter using isolated 5 V rail for metrology IC biasing and microcontroller analog peripherals. IC Role / Device Role / Timing Role: Isolated-side shunt reference generating accurate 5.0 V for ADC and op-amp signal conditioning. Use Value: 93 μVrms noise floor avoids degrading ENOB below 15.5 bits in 100 kSPS sampling. | Use Scenario: High-fidelity DAC output stage requiring ultra-low-noise 5 V bias for I/V conversion op-amps. IC Role / Device Role / Timing Role: Low-noise shunt reference supplying clean 5.0 V to precision op-amp power rails. Use Value: No-output-capacitor design prevents capacitor-induced phase shift or ESR-related noise coupling into audio path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040BIM3-5.0/NOPB | Higher 100 μA min operating current; same 5.0 V, ±0.2%, SOT-23 package | Less suitable for sub-100 μA battery-powered systems; identical thermal performance | Select when legacy LM4040 footprint compatibility is required and higher quiescent current is acceptable |
| REF3050AIDBZR | Series reference (3-pin); 5.0 V, ±0.2%, 50 ppm/°C, but requires output capacitor and higher 45 μA quiescent current | Needs external decoupling; unsuitable for true 2-terminal shunt replacement | Choose only if system topology mandates series architecture or ground-referenced output is mandatory |
Compared with LM4040BIM3-5.0/NOPB and REF3050AIDBZR, the LM4050BEM3-5.0/NOPB uniquely combines ultra-low 56 μA minimum current, zero-output-capacitor operation, and 2-terminal simplicity - making it optimal for space- and power-constrained shunt reference implementations where ground-referenced output is not required.
Availability
LM4050BEM3-5.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, data acquisition systems, energy management units, and precision audio components requiring stable component supply with guaranteed long-term availability.
Supply support for LM4050BEM3-5.0/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 90 years of innovation in precision analog ICs.
The LM4050-N product line delivers micropower shunt voltage references optimized for accuracy-critical, space-constrained applications including portable test equipment, industrial sensors, and automotive subsystems.
FAQ
What is the output voltage tolerance of the LM4050BEM3-5.0/NOPB at 25°C?
The LM4050BEM3-5.0/NOPB has a guaranteed initial reverse breakdown voltage tolerance of ±10 mV (±0.2%) at 25°C, corresponding to a 5.0 V nominal output. This B-grade specification is verified during wafer sort via Zener-zap trimming and applies across all SOT-23 packaged variants of the LM4050-N family at this voltage point.
Does the LM4050BEM3-5.0/NOPB require an external output capacitor for stability?
No, the LM4050BEM3-5.0/NOPB does not require an external output capacitor. Its internal design ensures stability with any capacitive load, including up to 10 μF, eliminating the need for external stabilization components - a key advantage over older shunt references like the LM385 or TL431.
What is the minimum operating current for the LM4050BEM3-5.0/NOPB?
The LM4050BEM3-5.0/NOPB requires a minimum operating current of 56 μA at 25°C, increasing to 80 μA over the industrial temperature range (−40°C to +85°C) and 90 μA over the extended range (−40°C to +125°C). Below this current, regulation is not guaranteed.
Can the LM4050BEM3-5.0/NOPB be used in automotive applications?
The LM4050BEM3-5.0/NOPB itself is not AEC-Q100 qualified; however, its pin-compatible automotive-grade counterpart LM4050BEM3-5.0Q1/NOPB is AEC-Q100 Grade 1 qualified (−40°C to +125°C) and manufactured on TI's automotive flow. For automotive designs, LM4050BEM3-5.0Q1/NOPB must be specified.
What is the wideband noise performance of the LM4050BEM3-5.0/NOPB?
The LM4050BEM3-5.0/NOPB delivers 93 μVrms wideband noise over the 10 Hz to 10 kHz bandwidth at 100 μA operating current. This noise level supports high-resolution (≥16-bit) analog-to-digital conversion without degrading effective number of bits (ENOB) in precision measurement systems.
LM4050BEM3-5.0/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
LM4050BEM3-5.0/NOPB FAQ
1.How can I place an order for LM4050BEM3-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050BEM3-5.0/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 LM4050BEM3-5.0/NOPB reliable?
The price and inventory of LM4050BEM3-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050BEM3-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050BEM3-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050BEM3-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050BEM3-5.0/NOPB?
LM4050BEM3-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050BEM3-5.0/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 LM4050BEM3-5.0/NOPB?
For technical support, including LM4050BEM3-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050BEM3-5.0/NOPB requirements.
6.How does Aetrix verify that LM4050BEM3-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050BEM3-5.0/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 LM4050BEM3-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050BEM3-5.0/NOPB?
All LM4050BEM3-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050BEM3-5.0/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 LM4050BEM3-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050BEM3-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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