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Texas Instruments LM4050QCIM3-5.0/NOPB
- Part No.:
- LM4050QCIM3-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
LM4050QCIM3-5.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.5% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,992
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Product details
Overview
LM4050QCIM3-5.0/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% (A-grade) initial tolerance at 25°C, 50 ppm/°C max temperature coefficient, and 93 μVrms wideband noise (10 Hz–10 kHz). It operates from 60 μA to 15 mA supply current across −40°C to 125°C and requires no output capacitor.
For engineers reviewing the LM4050QCIM3-5.0/NOPB datasheet, LM4050QCIM3-5.0/NOPB pinout, LM4050QCIM3-5.0/NOPB application, or LM4050QCIM3-5.0/NOPB equivalent, this device serves as a space-constrained, low-drift, low-noise voltage reference for high-resolution data acquisition, battery-powered instrumentation, and automotive-grade precision analog systems where stable 5 V reference integrity is critical under varying load and temperature conditions.
Technical Context
The LM4050QCIM3-5.0/NOPB implements a curvature-corrected bandgap shunt architecture with internal Zener-zap trim for ±0.1% accuracy, enabling stable regulation without external compensation. Its dynamic impedance is 0.5 Ω at 1 mA/120 Hz, supporting tight load regulation across its 60 μA–15 mA operating range.
As an AEC-Q100 Grade 1 qualified variant, it features enhanced process control and screening for automotive applications, with thermal hysteresis limited to 1.4 mV over −40°C to 125°C cycling and long-term stability of 120 ppm after 1000 hours at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V nominal reverse breakdown voltage - enables direct use with 5 V ADCs/DACs requiring 1 LSB = ~1.22 mV (12-bit full-scale) |
| Initial Tolerance (A grade) | ±5 mV (±0.1%) at 25°C - ensures minimal calibration burden in production test for high-accuracy measurement systems |
| Temp. Coefficient | ≤50 ppm/°C over −40°C to 125°C - guarantees <±0.31 mV drift across full automotive extended temperature range |
| Wideband Noise | 93 μVrms (10 Hz–10 kHz) - supports 16-bit+ resolution in low-noise sensor front-ends without additional filtering |
| Operating Current Range | 74 μA min / 15 mA max - allows ultra-low-power operation in coin-cell devices while sustaining regulation under heavy load transients |
| Dynamic Impedance | 0.5 Ω at 1 mA - minimizes output voltage shift under load current steps, critical for fast-settling SAR ADC references |
| Thermal Hysteresis | 1.4 mV - limits repeatability error after thermal cycling, essential for field-deployed metering and test equipment |
Pinout & Package
SOT-23 (DBZ) package, 2.92 mm × 1.30 mm body size, surface-mount, 3-pin configuration with exposed die attach pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Shunt current input / reference output node | Connects to series resistor (RS) and load; voltage regulated between Cathode and Anode; must sink 74–15,000 μA for stable 5.0 V operation |
| Anode (Pin 2) | Reference ground / common return | Must be tied to system ground; forms the 0 V reference point for VOUT; all regulation is differential across Cathode–Anode |
| NC (Pin 3) | No internal connection | Must be left floating or connected to Pin 2 (Anode); ties die attach interface - grounding prevents EMI-induced errors near switching noise sources |
Key Features
| Feature | Design Value |
|---|---|
| No output capacitor required | Internally compensated for stability with any capacitive load - eliminates BOM cost, layout area, and startup delay from external COUT |
| AEC-Q100 Grade 1 qualified | Manufactured on automotive-grade flow with enhanced reliability screening - suitable for engine control, ADAS sensors, and infotainment power rails |
| Low micropower operation | 74 μA minimum cathode current - enables >10-year battery life in portable gas meters and wireless sensor nodes |
| Fixed 5.0 V option | Optimized for 5 V supply systems - matches standard microcontroller I/O voltage and simplifies ADC reference design vs. adjustable solutions |
| Tolerates capacitive loads | Stable with ≥1 nF to ≥10 μF bypass caps - supports noise filtering in noisy industrial environments without oscillation risk |
Applications
| Battery-Powered Instrumentation | Precision Data Acquisition |
|---|---|
|
Use Scenario: Handheld multimeter with 16-bit SAR ADC powered by two AA cells. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 5.0 V reference for ADC conversion and microcontroller VREF. Use Value: ±0.1% initial tolerance and 50 ppm/°C TC ensure <±0.5 LSB error over temperature, eliminating field recalibration. |
Use Scenario: Industrial PLC analog input module measuring 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision reference for 24-bit delta-sigma ADC and isolated signal conditioning stage. Use Value: 93 μVrms noise and 0.5 Ω dynamic impedance maintain ENOB >19 bits even under 15 mA load transients. |
| Automotive Sensor Interface | Energy Metering Reference |
|
Use Scenario: Exhaust gas temperature sensor signal conditioner in Tier-1 powertrain module. IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 shunt reference supplying excitation and ADC reference for ratiometric RTD measurement. Use Value: Thermal hysteresis ≤1.4 mV and long-term stability of 120 ppm ensure repeatable calibration over 15-year vehicle lifetime. |
Use Scenario: Revenue-grade electricity meter with metrology SoC and anti-tampering isolation. IC Role / Device Role / Timing Role: Primary 5.0 V reference for polyphase energy measurement IC and tamper-detection comparators. Use Value: No-output-capacitor operation avoids electrolytic aging failure modes; 125°C rating supports sealed transformer-coupled enclosure designs. |
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 tol, 3 μVp-p noise (0.1–10 Hz), requires 1.2 mA quiescent current | Requires higher supply headroom (>6.5 V) and external decoupling; unsuitable for low-voltage or high-side sensing | Select when ultra-low noise and tighter initial accuracy justify added complexity and power |
| ADR3450ARJZ-R7 | Series reference; 5.0 V, ±0.1% initial tol, 10 μVrms (0.1–10 Hz), 125 μA IQ, SOT-23-5 | Higher pin count, needs external bypass cap, lower noise but no AEC-Q100 qualification | Prefer for non-automotive portable instruments needing lower IQ and better low-frequency noise than LM4050QCIM3-5.0/NOPB |
Compared with REF5050IDBZR and ADR3450ARJZ-R7, LM4050QCIM3-5.0/NOPB offers unique advantages in shunt topology simplicity, zero-output-capacitor operation, and AEC-Q100 compliance - making it optimal for space-constrained, low-headroom, and automotive-qualified 5 V reference designs where load current varies widely.
Availability
LM4050QCIM3-5.0/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 with guaranteed long-term continuity.
Supply support for LM4050QCIM3-5.0/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, power management, and automotive electronics.
The LM4050-N family was designed specifically for space-constrained, high-accuracy shunt reference applications in industrial, medical, and automotive systems where micropower operation, low drift, and robustness to capacitive loading are mandatory.
FAQ
What is the minimum operating current for LM4050QCIM3-5.0/NOPB?
The LM4050QCIM3-5.0/NOPB requires a minimum cathode current of 74 μA at 25°C to maintain regulation, rising to 90 μA across the full −40°C to 125°C extended temperature range. This value is confirmed in Section 5.8 of the TI datasheet and reflects the device's optimized 5.0 V bandgap-Zener hybrid structure.
Is LM4050QCIM3-5.0/NOPB AEC-Q100 qualified?
Yes, LM4050QCIM3-5.0/NOPB is AEC-Q100 Grade 1 qualified (−40°C to 125°C), manufactured on an automotive-grade flow with enhanced wafer-level screening and reliability testing per TI's automotive product requirements. This is explicitly stated in the "Features" and "Device Information" sections of the official datasheet.
Can LM4050QCIM3-5.0/NOPB drive capacitive loads without oscillation?
Yes, LM4050QCIM3-5.0/NOPB is internally compensated and remains stable with any capacitive load - from 0 pF up to ≥10 μF - without requiring an external output capacitor. This capability is verified in TI's typical characteristics (Figure 5-1, 5-2) and is a core feature highlighted in the device description and functional block diagram.
What is the thermal hysteresis specification for LM4050QCIM3-5.0/NOPB?
The thermal hysteresis for LM4050QCIM3-5.0/NOPB is 1.4 mV, defined as the voltage shift measured at 25°C before and after cycling between −40°C and 125°C. This parameter is specified in Section 5.8 (Electrical Characteristics: 5V Option) and directly impacts repeatability in field-deployed metering and test equipment.
Does LM4050QCIM3-5.0/NOPB require an external capacitor for stability?
No, LM4050QCIM3-5.0/NOPB does not require an external capacitor for stability. Its internal compensation ensures unconditional stability with any capacitive load, including zero capacitance. While a bypass capacitor may be added for additional noise filtering, it is never necessary for loop stability - a key differentiator from older shunt references.
LM4050QCIM3-5.0/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:
- ±0.5%
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
LM4050QCIM3-5.0/NOPB FAQ
1.How can I place an order for LM4050QCIM3-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4050QCIM3-5.0/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 LM4050QCIM3-5.0/NOPB reliable?
The price and inventory of LM4050QCIM3-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4050QCIM3-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4050QCIM3-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4050QCIM3-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4050QCIM3-5.0/NOPB?
LM4050QCIM3-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4050QCIM3-5.0/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 LM4050QCIM3-5.0/NOPB?
For technical support, including LM4050QCIM3-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4050QCIM3-5.0/NOPB requirements.
6.How does Aetrix verify that LM4050QCIM3-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4050QCIM3-5.0/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 LM4050QCIM3-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4050QCIM3-5.0/NOPB?
All LM4050QCIM3-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4050QCIM3-5.0/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 LM4050QCIM3-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM4050QCIM3-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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