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Texas Instruments LM4132CQ1MFR3.3
- Part No.:
- LM4132CQ1MFR3.3
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132CQ1MFR3.3.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,940
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Product details
Overview
LM4132CQ1MFR3.3 from Texas Instruments is a precision low-dropout (LDO) voltage reference IC delivering a stable 3.3 V output with ±0.2% initial accuracy, 20 ppm/°C temperature coefficient over –40°C to +125°C, and 60 µA quiescent current - designed for automotive-grade instrumentation, battery-powered data acquisition, and high-stability analog signal chains.
For engineers reviewing the LM4132CQ1MFR3.3 datasheet, LM4132CQ1MFR3.3 pinout, LM4132CQ1MFR3.3 application, or LM4132CQ1MFR3.3 equivalent, this page provides verified specifications, SOT-23-5 pin mapping, automotive AEC-Q100 Grade 1 qualification details, load regulation performance up to 25 mA, and validated alternative options for precision reference design.
Technical Context
The LM4132CQ1MFR3.3 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level accuracy in cost-effective plastic packaging. It operates as a series reference with enable-controlled shutdown mode (3 µA), eliminating need for output buffer or mandatory output capacitor.
Its input range spans VREF + 400 mV to 5.5 V, supporting operation from single Li-ion or regulated 5 V rails. The device delivers 25 mA maximum load current (Q1 variant), maintains 0.5% output accuracy down to 175 mV dropout at 10 mA, and achieves 310 µVPP (0.1–10 Hz) noise - critical for 12–16-bit ADC biasing and sensor excitation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V nominal, ±0.2% initial accuracy (C grade) - ensures ≤6.6 mV absolute error at 25°C for calibration-critical systems |
| Tempco | 20 ppm/°C (–40°C to +125°C) - limits drift to ±660 ppm (±2.18 mV) across full automotive temperature range |
| Quiescent Current | 60 µA typical - enables >1-year battery life in 10 µA-sleep IoT sensors using periodic reference activation |
| Shutdown Current | 3 µA max - reduces standby power by 20× vs active mode, essential for always-on automotive modules |
| Max Load Current | 25 mA - supports direct driving of SAR ADC references, op-amp bias networks, and DAC voltage references |
| Dropout Voltage | 175 mV at 10 mA - allows operation from 3.475 V input, compatible with 3.3 V LDOs or partially discharged batteries |
| Noise (0.1–10 Hz) | 310 µVPP - meets SNR requirements for 14-bit ADCs (≥86 dB) without external filtering |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, thermal resistance RθJA = 164.1°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N/C | No-connect terminal - must remain unconnected and floating per datasheet; not internally bonded |
| 2 | GND | Analog ground reference - requires low-impedance connection to system AGND plane for noise immunity |
| 3 | EN | Active-high enable input - asserts reference when ≥65% of VIN; disables output and reduces IQ to 3 µA |
| 4 | VIN | Input supply - accepts 3.675 V to 5.5 V; minimum headroom 400 mV above VREF for regulation |
| 5 | VREF | Precision 3.3 V output - supplies stable reference to ADCs, DACs, or comparator thresholds; requires 1 µF ceramic CIN |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for –40°C to +125°C ambient operation - suitable for engine control units, ADAS sensors, and under-hood electronics |
| EEPROM-trimmed curvature compensation | Eliminates assembly-induced tempco shift - achieves 20 ppm/°C over full range without laser trimming or external calibration |
| Stable with low-ESR ceramics only | Requires only 1 µF input capacitor (CIN); no output capacitor needed - saves board space and avoids ESR-related instability |
| 25 mA output drive capability | Directly powers reference inputs of multiple 12-bit ADCs or op-amp gain stages - removes need for external buffers |
| 3 µA shutdown mode | EN pin reduces supply current by 20× - enables micro-power wake-up architectures in telematics and predictive maintenance nodes |
Applications
| Automotive Engine Control Unit (ECU) | Portable Data Logger |
|---|---|
Use Scenario: High-accuracy analog front-end for oxygen sensor and knock sensor signal conditioning in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Primary voltage reference for 16-bit ADC sampling of sensor outputs under wide temperature and vibration conditions. Use Value: 20 ppm/°C tempco and AEC-Q100 qualification ensure <±2.5 mV reference error across –40°C to +125°C, meeting ASIL-B functional safety margin. |
Use Scenario: Battery-powered environmental monitoring node logging temperature, humidity, and pressure over multi-week deployments. IC Role / Device Role / Timing Role: Low-power reference for successive-approximation ADCs during intermittent measurement bursts. Use Value: 60 µA quiescent current and 3 µA shutdown enable >18-month battery life on two AA cells, while 310 µVPP noise preserves 14-bit effective resolution. |
| Industrial PLC Analog Input Module | Medical Patient Monitor Signal Chain |
Use Scenario: 4–20 mA loop-powered I/O module requiring precise 3.3 V reference for current-to-voltage conversion and ADC biasing. IC Role / Device Role / Timing Role: Stable reference source for ratiometric measurements and isolated sigma-delta ADCs in noisy factory environments. Use Value: 25 mA drive capability supports simultaneous powering of isolation amplifiers and ADC references; 85 ppm/V line regulation rejects supply ripple from shared 5 V rail. |
Use Scenario: ECG/EEG front-end where reference stability directly impacts baseline wander and diagnostic accuracy. IC Role / Device Role / Timing Role: Ultra-low-noise reference for instrumentation amplifiers and 16-bit medical-grade ADCs. Use Value: 310 µVPP (0.1–10 Hz) noise and 75 ppm thermal hysteresis prevent false arrhythmia detection caused by reference drift during patient temperature shifts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AASA33+ | 3.3 V, ±0.06% initial accuracy, 3 ppm/°C tempco, 12 µA IQ, SO-8 package | Higher accuracy and lower noise (12 µVPP), but 2× larger footprint and no enable pin | Select for metrology-grade lab equipment where size and shutdown are secondary to stability |
| ADR3433ARJZ-R7 | 3.3 V, ±0.1% initial accuracy, 10 ppm/°C tempco, 120 µA IQ, SOT-23-5 package | Same footprint and pinout, but higher IQ and no automotive qualification; lacks enable function | Choose for industrial non-automotive designs needing drop-in replacement without layout change, accepting higher power |
Compared with MAX6126AASA33+ and ADR3433ARJZ-R7, the LM4132CQ1MFR3.3 uniquely combines AEC-Q100 Grade 1 qualification, integrated enable, and 25 mA drive in SOT-23-5 - making it optimal for space-constrained automotive and portable systems requiring both low power and robustness.
Availability
LM4132CQ1MFR3.3 is available at Aetrix Electronics and suitable for automotive engine control, portable data acquisition, and industrial PLC analog input modules requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LM4132CQ1MFR3.3 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 decades of expertise in precision analog ICs and automotive-grade components.
The LM4132 family was engineered to deliver laser-trimmed reference performance using cost-effective CMOS + EEPROM trimming - targeting automotive, industrial, and portable instrumentation where accuracy, temperature stability, and small size are critical.
FAQ
What is the operating temperature range for the LM4132CQ1MFR3.3?
The LM4132CQ1MFR3.3 is qualified per AEC-Q100 Grade 1, supporting continuous operation from –40°C to +125°C ambient temperature. This rating is validated across all electrical parameters including initial accuracy, tempco, and load regulation - making it suitable for under-hood automotive applications and industrial environments with extreme thermal cycling.
Does the LM4132CQ1MFR3.3 require an output capacitor for stability?
No, the LM4132CQ1MFR3.3 is designed to be stable without an output capacitor. The datasheet explicitly states COUT is optional, and the device maintains regulation with only the required 1 µF ceramic input capacitor (CIN). This eliminates ESR dependency and simplifies layout in space-constrained designs.
What is the maximum load current supported by the LM4132CQ1MFR3.3?
The LM4132CQ1MFR3.3 supports up to 25 mA of continuous output current, as specified in Section 6.10 (Electrical Characteristics LM4132-3.3-Q1) of the TI datasheet. This exceeds the 20 mA limit of standard LM4132-3.3 variants and enables direct driving of multiple analog components without external buffering.
How does the enable pin (EN) function on the LM4132CQ1MFR3.3?
The EN pin on the LM4132CQ1MFR3.3 is an active-high digital control input. When pulled to ≥65% of VIN, the reference activates and delivers full 3.3 V output. When held ≤35% of VIN, the device enters shutdown mode with supply current reduced to 3 µA max - enabling ultra-low-power duty-cycled operation in battery-powered systems.
Is the LM4132CQ1MFR3.3 pin-compatible with other LM4132-Q1 variants?
Yes, all LM4132-Q1 variants - including LM4132CQ1MFR18, LM4132CQ1MFR25, and LM4132CQ1MFR33 - share identical SOT-23-5 (DBV) packaging and pinout (Pin 1: N/C, Pin 2: GND, Pin 3: EN, Pin 4: VIN, Pin 5: VREF). This allows hardware reuse across voltage options in automotive platforms with minimal BOM changes.
LM4132CQ1MFR3.3 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4132CQ1MFR3.3 FAQ
1.How can I place an order for LM4132CQ1MFR3.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132CQ1MFR3.3 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 LM4132CQ1MFR3.3 reliable?
The price and inventory of LM4132CQ1MFR3.3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132CQ1MFR3.3 is usually 5 days.
3.What payment methods are accepted for LM4132CQ1MFR3.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132CQ1MFR3.3 transactions.
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LM4132CQ1MFR3.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132CQ1MFR3.3 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 LM4132CQ1MFR3.3?
For technical support, including LM4132CQ1MFR3.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132CQ1MFR3.3 requirements.
6.How does Aetrix verify that LM4132CQ1MFR3.3 is sourced from the original manufacturer or authorized distributors?
All LM4132CQ1MFR3.3 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 LM4132CQ1MFR3.3 meets industry standards.
7.What is the process for return or replacement of LM4132CQ1MFR3.3?
All LM4132CQ1MFR3.3 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132CQ1MFR3.3, 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 LM4132CQ1MFR3.3 part is unused and in its original packaging.
Return procedure for LM4132CQ1MFR3.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132CQ1MFR3.3 Tags
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TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
Texas Instruments
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LM4041DIM3-ADJ/NOPB
Texas Instruments
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
Diodes Incorporated
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