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Texas Instruments LM4132CQ1MFT3.3
- Part No.:
- LM4132CQ1MFT3.3
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132CQ1MFT3.3.pdf
- Description:
- IC VREF SERIES 0.2% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:113
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Product details
Overview
LM4132CQ1MFT3.3 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-accuracy ADC/DAC biasing.
For engineers reviewing the LM4132CQ1MFT3.3 datasheet, LM4132CQ1MFT3.3 pinout, LM4132CQ1MFT3.3 application, or LM4132CQ1MFT3.3 equivalent, this page provides verified electrical specifications, SOT-23-5 package details, enable-controlled shutdown functionality, thermal hysteresis (75 ppm), and automotive AEC-Q100 Grade 1 qualification context.
Technical Context
The LM4132CQ1MFT3.3 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision in cost-effective plastic packaging. It operates as a series reference with no mandatory output capacitor and supports up to 25 mA load current in automotive conditions.
Its enable pin (EN) provides digital control of output state, transitioning between active mode (60 µA IQ) and shutdown mode (3 µA IQ). Dropout voltage is specified at 175 mV (typical, 10 mA load) with VIN ≥ VREF + 400 mV, supporting operation down to 3.7 V input in 3.3 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±0.2% (C grade, 25°C); enables accurate 12-bit+ ADC reference scaling without calibration |
| Tempco | 20 ppm/°C (–40°C to +125°C); ensures ≤±0.83 mV drift across full automotive temperature range |
| Quiescent Current | 60 µA (active), 3 µA (shutdown); extends battery life in portable test equipment and sensor nodes |
| Load Current | 25 mA max (LM4132C-3.3-Q1); drives SAR ADC references, op-amp bias networks, and small logic rails directly |
| Dropout Voltage | 175 mV (typ, 10 mA); allows operation from single-cell Li-ion (3.7 V min) or regulated 3.6 V supplies |
| Output Noise | 310 µVPP (0.1–10 Hz); meets noise requirements for 16-bit precision data converters |
| Line Regulation | 85 ppm/V (VREF + 0.4 V to 5.5 V); maintains stability despite input rail variation in automotive power domains |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 1.0 mm height, gull-wing leads; suitable for space-constrained automotive ECUs and portable instrumentation PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain unconnected; floating; no internal connection or function |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal band-gap circuitry; requires low-impedance PCB tie to system AGND |
| 3 - EN | Enable control input | Active-high logic input; VIH ≥ 65% VIN, VIL ≤ 35% VIN; controls transition between 60 µA active and 3 µA shutdown modes |
| 4 - VIN | Input supply | Accepts 3.7 V to 5.5 V; must exceed VREF by ≥400 mV for regulation; bypass with ≥1 µF ceramic capacitor |
| 5 - VREF | Precision output | 3.3 V reference source; capable of sourcing up to 25 mA; stable with low-ESR ceramic capacitors only (no tantalum required) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in automotive ECUs, ADAS sensors, and infotainment power management |
| EEPROM-trimmed curvature compensation | Eliminates assembly-induced voltage shift in plastic SOT-23 packaging, achieving 0.2% accuracy without laser trimming |
| Capacitor-free stability | Operates reliably with only input capacitor (CIN); no output capacitor (COUT) required - reduces BOM count and board area |
| Low thermal hysteresis | 75 ppm maximum; ensures repeatable output after thermal cycling - critical for calibration-critical test equipment |
| High PSRR | ≥40 dB (10 Hz–100 kHz); suppresses ripple from noisy DC/DC converters feeding VIN in mixed-signal systems |
Applications
| Automotive Sensor Signal Conditioning | Portable Data Logger Reference |
|---|---|
Use Scenario: High-accuracy analog front-end for MEMS pressure and temperature sensors in engine control modules. IC Role / Device Role / Timing Role: Provides stable 3.3 V excitation and ADC reference for ratiometric sensor measurements. Use Value: Enables <±0.1% total measurement error over lifetime and temperature, meeting ASIL-B functional safety requirements. |
Use Scenario: Battery-powered environmental monitoring unit logging temperature, humidity, and CO₂ over weeks on a single charge. IC Role / Device Role / Timing Role: Supplies precision reference for 16-bit sigma-delta ADC and low-power microcontroller VREF input. Use Value: 3 µA shutdown current extends runtime; 20 ppm/°C tempco ensures field calibration validity across seasonal temperature swings. |
| Industrial PLC Analog Input Module | Medical Patient Monitor Bias Supply |
Use Scenario: 4–20 mA loop-powered I/O module requiring isolated, high-stability voltage references for DAC and ADC stages. IC Role / Device Role / Timing Role: Delivers 3.3 V reference to isolated ADC driver and DAC output buffer under varying loop supply conditions. Use Value: 85 ppm/V line regulation maintains accuracy despite 12–30 V loop voltage variation; 25 mA drive supports multiple channel buffers. |
Use Scenario: Portable ECG and SpO₂ monitor requiring ultra-low-noise, low-drift references for biopotential amplification and conversion. IC Role / Device Role / Timing Role: Supplies clean 3.3 V reference to instrumentation amplifier gain-setting network and 16-bit medical-grade ADC. Use Value: 310 µVPP (0.1–10 Hz) noise and 75 ppm thermal hysteresis meet IEC 60601-2-27 ECG accuracy requirements. |
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, 0.04% initial accuracy, 3 ppm/°C tempco, SO-8 package, 12 µA IQ | Higher precision and lower noise, but larger footprint and no enable pin; requires external output capacitor | Preferred where ultimate accuracy and low noise outweigh size and feature constraints - e.g., lab-grade calibrators |
| ADR3433ARJZ-R7 | 3.3 V, 0.1% initial accuracy, 10 ppm/°C tempco, SOT-23-5, 120 µA IQ, no enable | Same package and pinout, but lacks enable control and draws double the quiescent current; higher dropout (250 mV) | Drop-in replacement only if enable functionality is unused and 120 µA IQ is acceptable - e.g., fixed-power industrial controllers |
Compared with MAX6126AASA33+ and ADR3433ARJZ-R7, the LM4132CQ1MFT3.3 uniquely balances AEC-Q100 qualification, integrated enable, ultra-low IQ, and SOT-23-5 size - making it optimal for automotive and portable systems where thermal robustness, power gating, and board space are co-constrained.
Availability
LM4132CQ1MFT3.3 is available at Aetrix Electronics and suitable for automotive sensor modules, portable data loggers, industrial PLC analog inputs, and medical patient monitors requiring stable component supply with guaranteed long-term continuity.
Supply support for LM4132CQ1MFT3.3 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 power management technologies, with decades of automotive and industrial qualification expertise.
The LM4132 family was engineered to deliver laser-trimmed voltage reference performance using cost-effective CMOS and EEPROM trimming - targeting high-reliability automotive, test equipment, and precision data acquisition systems.
FAQ
What is the operating temperature range for the LM4132CQ1MFT3.3?
The LM4132CQ1MFT3.3 is qualified per AEC-Q100 Grade 1, with a guaranteed operating ambient temperature range of –40°C to +125°C. This rating applies across all electrical specifications including initial accuracy, tempco, load regulation, and shutdown current - validated for automotive engine bay and transmission control environments.
Does the LM4132CQ1MFT3.3 require an output capacitor (COUT)?
No, the LM4132CQ1MFT3.3 is stable without an output capacitor and does not require COUT for regulation. The datasheet explicitly states COUT is optional. Only the input capacitor (CIN) is mandatory - typically ≥1 µF ceramic - to ensure transient response and input ripple rejection.
What is the minimum input voltage required for the LM4132CQ1MFT3.3 to maintain regulation?
The LM4132CQ1MFT3.3 requires VIN ≥ VREF + 400 mV for proper regulation. For its 3.3 V output, the minimum valid input is therefore 3.7 V. At 10 mA load, typical dropout is 175 mV; the absolute maximum dropout (over temperature and process) is 400 mV, defining the worst-case minimum VIN as 3.7 V.
How does the enable (EN) pin function on the LM4132CQ1MFT3.3?
The EN pin is an active-high digital control input. When pulled ≥65% of VIN, the device operates normally (60 µA IQ, 3.3 V output). When pulled ≤35% of VIN, it enters shutdown mode (3 µA IQ, VREF disabled). No external pull-up/down is required; logic-level interfacing with MCU GPIO is direct and robust.
Is the LM4132CQ1MFT3.3 pin-compatible with other LM4132-Q1 variants?
Yes - all LM4132-Q1 variants (e.g., LM4132AQ1MFT3.3, LM4132DQ1MFT3.3) share identical SOT-23-5 (DBV) pinout, package dimensions, and terminal functions. Only initial accuracy and tempco differ between grades; electrical interface, enable behavior, and thermal specs are consistent across the Q1 family.
LM4132CQ1MFT3.3 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
LM4132CQ1MFT3.3 FAQ
1.How can I place an order for LM4132CQ1MFT3.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132CQ1MFT3.3 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 LM4132CQ1MFT3.3 reliable?
The price and inventory of LM4132CQ1MFT3.3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132CQ1MFT3.3 is usually 5 days.
3.What payment methods are accepted for LM4132CQ1MFT3.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132CQ1MFT3.3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132CQ1MFT3.3?
LM4132CQ1MFT3.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132CQ1MFT3.3 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 LM4132CQ1MFT3.3?
For technical support, including LM4132CQ1MFT3.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132CQ1MFT3.3 requirements.
6.How does Aetrix verify that LM4132CQ1MFT3.3 is sourced from the original manufacturer or authorized distributors?
All LM4132CQ1MFT3.3 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 LM4132CQ1MFT3.3 meets industry standards.
7.What is the process for return or replacement of LM4132CQ1MFT3.3?
All LM4132CQ1MFT3.3 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132CQ1MFT3.3, 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 LM4132CQ1MFT3.3 part is unused and in its original packaging.
Return procedure for LM4132CQ1MFT3.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132CQ1MFT3.3 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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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
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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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