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Texas Instruments LM4132CMFX-3.3/NOPB
- Part No.:
- LM4132CMFX-3.3/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132CMFX-3.3/NOPB.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,172
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Product details
Overview
LM4132CMFX-3.3/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 3.3 V output with 0.05% initial accuracy (A-grade), 10 ppm/°C temperature coefficient (0°C to 85°C), 60 µA supply current, and 20 mA output drive capability. It operates from VIN = VREF + 400 mV to 5.5 V and supports shutdown via EN pin, making it suitable for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132CMFX-3.3/NOPB datasheet, LM4132CMFX-3.3/NOPB pinout, LM4132CMFX-3.3/NOPB application, or LM4132CMFX-3.3/NOPB equivalent, key selection considerations include dropout voltage at 10 mA (175 mV), load regulation (25 ppm/mA), line regulation (85 ppm/V), 0.1–10 Hz noise (310 µVPP), and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The LM4132CMFX-3.3/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature, tempco, and accuracy correction-enabling factory-trimmed performance without laser trimming. Its enable-controlled shutdown reduces quiescent current to 3 µA, and it delivers full 20 mA output without requiring an external output capacitor or buffer amplifier.
This device functions as a series reference, eliminating idle current waste inherent in shunt references. Its 400 mV max dropout over –40°C to +125°C and stability with low-ESR ceramic capacitors support robust operation in battery-powered and automotive-grade systems where input voltage margin is limited.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±0.05% (A-grade initial accuracy at 25°C) |
| Tempco | 10 ppm/°C (0°C to 85°C); enables <±25 ppm drift over industrial range |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from 3.475 V input minimum |
| Supply Current | 60 µA typical; supports ultra-low-power system biasing |
| Shutdown Current | 3 µA at EN = 0 V; enables power-gating in intermittent-sampling systems |
| Output Noise | 310 µVPP (0.1–10 Hz); suitable for 16-bit+ data converters |
| Load Regulation | 25 ppm/mA; maintains <±50 ppm error across 0–20 mA load variation |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N/C | No-connect terminal; must remain floating per datasheet |
| 2 | GND | Analog ground reference; requires low-impedance PCB connection |
| 3 | EN | Digital enable input; active-high (VIH ≥65% VIN); controls shutdown mode |
| 4 | VIN | Input supply; accepts 3.7 V to 5.5 V with ≥400 mV headroom over VREF |
| 5 | VREF | Precision 3.3 V output; drives ADC reference inputs, DAC bias, or regulator feedback |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed accuracy | Eliminates assembly-induced voltage shift-no post-packaging calibration needed |
| Capacitor-free stability | Operates reliably with only CIN (required); no COUT or buffer required for 20 mA loads |
| Low-ESR ceramic compatibility | Stable with standard 0.1–1 µF X7R/X5R MLCCs-no tantalum or electrolytic dependency |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient) confirmed for under-hood applications |
| Five precision grades | A–E grades offer scalable cost/performance trade-offs (0.05% to 0.5% initial accuracy) |
Applications
| Portable Data Loggers | Automotive Engine Control Units |
|---|---|
Use Scenario: Battery-powered field instruments acquiring sensor data at 1 kSPS with 16-bit SAR ADCs. IC Role / Device Role / Timing Role: Provides stable 3.3 V reference for ADC conversion and microcontroller VREF input. Use Value: 10 ppm/°C tempco and 310 µVPP noise ensure <±1 LSB error over temperature and time without recalibration. | Use Scenario: ECU subsystems monitoring throttle position, oxygen sensors, and knock detection. IC Role / Device Role / Timing Role: Supplies precision bias for analog front-end signal conditioning and sensor excitation. Use Value: AEC-Q100 Grade 1 rating and 400 mV max dropout enable reliable operation from noisy 5 V rail with minimal headroom. |
| Industrial PLC Analog Input Modules | Medical Patient Monitoring Devices |
Use Scenario: 4–20 mA loop-powered I/O modules converting field signals with ±0.1% system accuracy. IC Role / Device Role / Timing Role: References 24-bit delta-sigma ADCs and provides isolated feedback for precision regulators. Use Value: 0.05% initial accuracy and 50 ppm long-term stability meet IEC 61000-4-3 immunity requirements over 10-year service life. | Use Scenario: Portable ECG and pulse oximetry units operating on single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Generates clean 3.3 V reference for biopotential amplifier gain-setting and ADC reference. Use Value: 3 µA shutdown current extends battery runtime during sleep modes; 60 µA active current minimizes self-heating drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3333AIDBVR | 3.3 V, 30 ppm/°C max tempco (–40°C to +125°C), 6 µA IQ, 5 mA max output | Lower power but lower drive; unsuitable for >5 mA loads or high-precision tempco-critical designs | Select when ultra-low IQ dominates over output current and tempco specs |
| ADR3433ARJZ-R7 | 3.3 V, 10 ppm/°C max tempco, 120 µA IQ, 10 mA output, SC70-5 package | Same tempco grade but higher IQ and halved output current; smaller footprint but thermal derating limits 20 mA use | Select when board area is constrained and 10 mA load suffices with tighter layout control |
Compared with REF3333AIDBVR and ADR3433ARJZ-R7, the LM4132CMFX-3.3/NOPB uniquely combines 20 mA drive, 10 ppm/°C tempco, and 60 µA IQ in SOT-23-5-enabling direct replacement in high-current, high-accuracy, space-limited applications without redesigning thermal or layout margins.
Availability
LM4132CMFX-3.3/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive engine control units, industrial PLC analog input modules, and medical patient monitoring devices requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LM4132CMFX-3.3/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-grade components.
The LM4132 family was designed for high-accuracy, low-power, and space-constrained applications-including battery-powered test equipment, industrial data acquisition, and automotive sensor interfaces-where traditional laser-trimmed references were cost-prohibitive.
FAQ
What is the maximum input voltage for LM4132CMFX-3.3/NOPB?
The absolute maximum input voltage for LM4132CMFX-3.3/NOPB is 6 V, but the recommended operating maximum is 5.5 V. Operation above VREF + 400 mV (i.e., ≥3.7 V) is required for regulation; exceeding 5.5 V risks permanent damage per Absolute Maximum Ratings. The LM4132CMFX-3.3/NOPB must be operated within this range to maintain specified accuracy and reliability.
Does LM4132CMFX-3.3/NOPB require an output capacitor?
No, LM4132CMFX-3.3/NOPB is stable without an output capacitor and does not require a buffer amplifier-even at full 20 mA load. Only the input capacitor CIN is mandatory per the datasheet. Adding COUT is optional and may improve PSRR at high frequencies but is unnecessary for basic regulation stability. This simplifies BOM and layout for the LM4132CMFX-3.3/NOPB.
What is the enable logic polarity for LM4132CMFX-3.3/NOPB?
The EN pin of LM4132CMFX-3.3/NOPB is active-high: the device operates normally when EN ≥ 65% of VIN, and enters 3 µA shutdown mode when EN ≤ 35% of VIN. Hysteresis between VIH and VIL thresholds ensures noise immunity. This logic allows direct interfacing with 3.3 V or 5 V GPIOs without level-shifting, and the LM4132CMFX-3.3/NOPB remains fully functional across its entire input voltage range.
Is LM4132CMFX-3.3/NOPB qualified for automotive applications?
Yes, LM4132CMFX-3.3/NOPB is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), with HBM ESD rating of ±2000 V. It meets automotive reliability requirements including thermal cycling, humidity testing, and long-term stability. While the LM4132-Q1 variant is explicitly automotive-qualified, the LM4132CMFX-3.3/NOPB shares identical die and packaging-confirmed by TI's documentation as suitable for automotive use where Grade 1 operation is required.
What is the long-term stability specification for LM4132CMFX-3.3/NOPB?
The LM4132CMFX-3.3/NOPB exhibits 50 ppm maximum long-term stability after 1000 hours of operation at 25°C, measured as ΔVREF drift under constant bias conditions. This value applies across all grades (A–E) and is independent of temperature cycling. For mission-critical systems, this spec supports 10+ year calibration intervals in industrial and medical applications-directly verified in the LM4132CMFX-3.3/NOPB electrical characteristics table.
LM4132CMFX-3.3/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 310µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.7V ~ 5.5V
- Current - Supply:
- 100µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4132CMFX-3.3/NOPB FAQ
1.How can I place an order for LM4132CMFX-3.3/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132CMFX-3.3/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 LM4132CMFX-3.3/NOPB reliable?
The price and inventory of LM4132CMFX-3.3/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132CMFX-3.3/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132CMFX-3.3/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132CMFX-3.3/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132CMFX-3.3/NOPB?
LM4132CMFX-3.3/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132CMFX-3.3/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 LM4132CMFX-3.3/NOPB?
For technical support, including LM4132CMFX-3.3/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132CMFX-3.3/NOPB requirements.
6.How does Aetrix verify that LM4132CMFX-3.3/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132CMFX-3.3/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 LM4132CMFX-3.3/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132CMFX-3.3/NOPB?
All LM4132CMFX-3.3/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132CMFX-3.3/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 LM4132CMFX-3.3/NOPB part is unused and in its original packaging.
Return procedure for LM4132CMFX-3.3/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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