My Inquiry
My Account
Texas Instruments LM4050QBEM3-5.0/NOPB
- Part No.:
- LM4050QBEM3-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QBEM3-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,665
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4050QBEM3-5.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SOT-23 package, delivering a fixed 5.0 V reverse breakdown voltage with ±0.1% initial tolerance (A-grade), 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz) at 100 μA. It operates from 60 μA to 15 mA over −40°C to 125°C and requires no output capacitor-enabling stable regulation in battery-powered instrumentation and high-resolution ADC references.
For engineers reviewing the LM4050QBEM3-5.0/NOPB datasheet, LM4050QBEM3-5.0/NOPB pinout, LM4050QBEM3-5.0/NOPB application, or LM4050QBEM3-5.0/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 74 μA minimum operating current (5 V option), thermal hysteresis of 1.4 mV, and compatibility with capacitive loads without external compensation.
Technical Context
The LM4050QBEM3-5.0/NOPB implements a curvature-corrected bandgap reference architecture with Zener-zap trim for ±0.1% accuracy at 25°C. Its internal compensation eliminates need for external stabilization capacitance while maintaining stability across full 60 μA–15 mA operating current range and any capacitive load.
As a shunt regulator, it sinks cathode current to maintain precise 5.0 V between cathode and anode terminals. Its dynamic impedance is 0.5 Ω at 1 mA/120 Hz, and long-term stability is 120 ppm after 1000 hours-critical for metrology-grade data acquisition and automotive sensor signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage-enables direct 12-bit ADC full-scale reference with 1.22 mV LSB when paired with 5 V supply. |
| Initial Tolerance | ±0.1% at 25°C (A-grade)-guarantees ≤ ±5 mV absolute error before temperature or aging effects. |
| Temp. Coefficient | ≤50 ppm/°C over −40°C to 125°C-limits drift to ≤±300 μV/°C across full extended temperature range. |
| Min Operating Current | 74 μA typical at 25°C-supports ultra-low-power operation in energy-harvesting or coin-cell systems. |
| Noise (10 Hz–10 kHz) | 93 μVrms at 100 μA-low enough to avoid degrading ENOB in 16-bit SAR ADCs. |
| Dynamic Impedance | 0.5 Ω at 1 mA/120 Hz-ensures <1 mV load regulation shift for ≤1 mA load transients. |
| Thermal Hysteresis | 1.4 mV (−40°C ↔ 125°C cycling)-quantifies non-recoverable voltage shift due to package stress. |
Pinout & Package
SOT-23 (DBZ) package: 2.92 mm × 1.30 mm body, 3-pin surface-mount, JEDEC MO-178AC compliant. Pin 1 = Cathode (shunt current input), Pin 2 = Anode (ground reference), Pin 3 = NC (no internal connection; must float or tie to Pin 2 per TI layout guidance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / voltage regulation node | Accepts input current from series resistor; voltage develops across cathode–anode to regulate at 5.0 V. |
| Anode (Pin 2) | Reference ground / common return | Must be connected to system ground; serves as voltage reference point for all measurements. |
| NC (Pin 3) | No internal connection | Not bonded internally; TI recommends floating or tying to Pin 2 in EMI-sensitive layouts to reduce noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Internally compensated for stability-eliminates BOM cost, board space, and startup delay from external cap. |
| Tolerates capacitive loads | Stable with any value of output capacitance-simplifies filtering in noisy environments without risk of oscillation. |
| AEC-Q100 Grade 1 qualified | Qualified for automotive applications up to +125°C ambient-validates reliability for engine control and ADAS sensors. |
| Low micropower operation | 74 μA min operating current enables >10-year battery life in 200 μA average-current IoT nodes. |
| Fixed 5.0 V option | Matches standard microcontroller I/O voltage rails and 5 V ADC references-removes need for external divider networks. |
Applications
| Battery-Powered Instrumentation | Precision Data Acquisition |
|---|---|
Use Scenario: Portable multimeter or handheld sensor logger powered by two AA cells with sleep-mode duty cycling. IC Role / Device Role / Timing Role: Shunt reference providing stable 5.0 V excitation and ADC reference for 16-bit sigma-delta converter. Use Value: 93 μVrms noise and 50 ppm/°C TC ensure <0.01% measurement accuracy across −10°C to +50°C field operating range. |
Use Scenario: Industrial PLC analog input module digitizing 4–20 mA loop signals with 24-bit resolution. IC Role / Device Role / Timing Role: Primary voltage reference for precision DAC-based current source and ratiometric ADC front-end. Use Value: ±0.1% initial tolerance and 120 ppm long-term stability maintain calibration integrity over 5+ years without field recalibration. |
| Automotive Sensor Signal Conditioning | Energy Metering Reference |
Use Scenario: Exhaust gas temperature (EGT) sensor interface in under-hood ECU with ambient up to 125°C. IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 shunt reference supplying bias and reference for op-amp signal chain. Use Value: Extended −40°C to +125°C operation and 1.4 mV thermal hysteresis prevent offset drift-induced errors during thermal cycling. |
Use Scenario: Class 0.2 smart electricity meter requiring metrology-grade voltage reference for revenue-grade kWh calculation. IC Role / Device Role / Timing Role: Stable 5.0 V reference for anti-aliasing filter op-amps and 24-bit ADC sampling grid voltage. Use Value: 0.5 Ω dynamic impedance ensures <0.5 mV load regulation error despite varying filter loading across 50–60 Hz mains cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050IDBZR | Series reference (not shunt); 5.0 V, ±0.05% initial accuracy, 3 μVrms noise, requires 1.2 mA quiescent current. | Requires higher supply headroom (≥6.5 V) and external decoupling; unsuitable for low-voltage or shunt-configured circuits. | Select only if ultra-low noise (<5 μVrms) and tighter initial accuracy justify added complexity and power. |
| TL431CDBZR | Adjustable shunt reference; 2.495 V nominal, ±1% initial tolerance, 200 ppm/°C TC, 25 μVrms noise at 10 mA. | Requires two external resistors to set 5.0 V; accuracy and TC degrade significantly vs. LM4050QBEM3-5.0/NOPB in precision apps. | Use only in cost-sensitive, non-precision applications where ±1% tolerance and higher drift are acceptable. |
Compared with REF5050IDBZR and TL431CDBZR, LM4050QBEM3-5.0/NOPB uniquely combines shunt topology, AEC-Q100 qualification, sub-100 μVrms noise, and zero-output-capacitor operation-making it optimal for space-constrained, low-power, automotive-grade precision references where simplicity and stability are critical.
Availability
LM4050QBEM3-5.0/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision data acquisition, automotive sensor interfaces, and energy metering applications requiring stable component supply across industrial and extended temperature ranges.
Supply support for LM4050QBEM3-5.0/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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs and automotive-qualified components.
The LM4050-N product line delivers micropower shunt voltage references optimized for space-constrained, high-accuracy applications including portable test equipment, automotive sensors, and industrial metrology-where low drift, low noise, and robust thermal performance are essential.
FAQ
What is the minimum operating current for LM4050QBEM3-5.0/NOPB?
The LM4050QBEM3-5.0/NOPB has a typical minimum operating current of 74 μA at 25°C and 80 μA over the full −40°C to 125°C extended temperature range. This low current enables use in ultra-low-power designs such as battery-operated sensors and energy-harvesting systems where supply current must remain below 100 μA.
Is LM4050QBEM3-5.0/NOPB qualified for automotive applications?
Yes, LM4050QBEM3-5.0/NOPB is LM4050-N-Q1 grade and AEC-Q100 Grade 1 qualified, rated for operation from −40°C to +125°C ambient temperature. It is manufactured on an automotive-grade flow and meets stringent reliability and qualification requirements for engine control, ADAS, and body electronics.
Does LM4050QBEM3-5.0/NOPB require an external output capacitor?
No, LM4050QBEM3-5.0/NOPB is internally compensated and stable without any external output capacitor. It tolerates arbitrary capacitive loads-including ceramic, tantalum, and electrolytic-making it ideal for noisy environments where bypass caps are used for EMI suppression without risking instability.
What is the thermal hysteresis specification for LM4050QBEM3-5.0/NOPB?
The LM4050QBEM3-5.0/NOPB exhibits 1.4 mV thermal hysteresis-the voltage shift measured at 25°C after cycling between −40°C and +125°C. This parameter quantifies mechanical stress-induced non-recoverable offset, critical for applications requiring repeatable calibration after thermal exposure.
How does LM4050QBEM3-5.0/NOPB compare to standard TL431 shunt references?
LM4050QBEM3-5.0/NOPB offers ±0.1% initial accuracy (vs. ±1% for TL431C), 50 ppm/°C max TC (vs. 200 ppm/°C), and 93 μVrms noise (vs. 25 μVrms but at 10× higher current). Unlike TL431, it is fixed 5.0 V-eliminating resistor network errors-and requires no external compensation.
LM4050QBEM3-5.0/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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QBEM3-5.0/NOPB FAQ
1.How can I place an order for LM4050QBEM3-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QBEM3-5.0/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 LM4050QBEM3-5.0/NOPB reliable?
The price and inventory of LM4050QBEM3-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QBEM3-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QBEM3-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QBEM3-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QBEM3-5.0/NOPB?
LM4050QBEM3-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QBEM3-5.0/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 LM4050QBEM3-5.0/NOPB?
For technical support, including LM4050QBEM3-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QBEM3-5.0/NOPB requirements.
6.How does Aetrix verify that LM4050QBEM3-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QBEM3-5.0/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 LM4050QBEM3-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QBEM3-5.0/NOPB?
All LM4050QBEM3-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QBEM3-5.0/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 LM4050QBEM3-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050QBEM3-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4050QBEM3-5.0/NOPB Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
