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Texas Instruments LM4132DQ1MFT3.3
- Part No.:
- LM4132DQ1MFT3.3
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DQ1MFT3.3.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:221
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Product details
Overview
LM4132DQ1MFT3.3 from Texas Instruments is a precision low-dropout (LDO) voltage reference IC delivering a stable 3.3 V output with ±0.4% initial accuracy, 20 ppm/°C temperature coefficient over –40°C to +125°C, and 60 µA quiescent current. It features an enable pin for 3 µA shutdown mode and supports up to 20 mA load current - ideal for automotive sensor signal conditioning and high-accuracy ADC biasing in engine control units.
For engineers reviewing the LM4132DQ1MFT3.3 datasheet, LM4132DQ1MFT3.3 pinout, LM4132DQ1MFT3.3 application, or LM4132DQ1MFT3.3 equivalent, this device offers AEC-Q100 Grade 1 qualification, SOT-23-5 packaging, dropout as low as 175 mV at 10 mA, and stability with ceramic capacitors - critical for space-constrained, battery-powered, and safety-relevant automotive designs.
Technical Context
The LM4132DQ1MFT3.3 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without laser trimming. Its internal circuitry includes a precision reference core, enable-controlled pass transistor, and thermal compensation network optimized for wide-temperature operation.
This device operates as a series (three-terminal) reference with VIN ≥ VREF + 400 mV (min), supports 0–20 mA load, requires only CIN (no mandatory COUT), and achieves 310 µVPP 0.1–10 Hz output noise - distinguishing it from shunt references and older bipolar references in power efficiency and layout simplicity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±0.4% (D-grade, production-tested at 25°C) |
| Tempco | 20 ppm/°C (–40°C to +125°C ambient, enabling stable performance across automotive under-hood environments) |
| Quiescent Current | 60 µA (enables >1-year battery life in always-on vehicle sensors) |
| Shutdown Current | 3 µA (EN = low, reducing system standby power in ECU sleep modes) |
| Dropout Voltage | 175 mV at 10 mA load (allows operation from 3.475 V supply - compatible with 3.6 V Li-ion or regulated 3.3 V rails) |
| Line Regulation | 85 ppm/V (VREF + 400 mV ≤ VIN ≤ 5.5 V - minimal sensitivity to input rail ripple) |
| Output Noise | 310 µVPP (0.1–10 Hz, supporting 16-bit+ SAR ADCs without external filtering) |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, surface-mount, thermally enhanced for automotive ambient conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain unconnected and floating; no internal connection or function |
| 2 - GND | Ground reference | Primary return path for reference core and enable logic; requires low-impedance PCB ground plane |
| 3 - EN | Enable control input | Active-high logic: VIH ≥ 65% VIN enables output; VIL ≤ 35% VIN disables output into 3 µA shutdown |
| 4 - VIN | Input supply | Accepts 3.475 V to 5.5 V; must be bypassed with ≥1 µF ceramic capacitor near pin |
| 5 - VREF | Precision output | 3.3 V reference source; stable into 20 mA load; optional 0.1 µF COUT improves transient response |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in automotive ECUs and ADAS modules |
| EEPROM-trimmed CMOS architecture | Eliminates post-assembly calibration drift; achieves 0.4% accuracy without laser trimming |
| Low-noise 3.3 V reference | 310 µVPP (0.1–10 Hz) enables direct interfacing with precision 16-bit ADCs in data loggers |
| Ultra-low quiescent current | 60 µA active / 3 µA shutdown supports ISO 26262 ASIL-B compliant low-power wake-up circuits |
| Capacitor-stable design | Stable with low-ESR ceramic capacitors only - no tantalum or electrolytic required |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Data Acquisition System |
|---|---|
Use Scenario: Biasing analog front-end of knock sensor amplifier and O2 sensor ADC in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Provides stable 3.3 V reference for ratiometric measurement and ADC full-scale calibration. Use Value: 20 ppm/°C tempco ensures <±1 LSB error over –40°C to +125°C, eliminating software recalibration cycles. |
Use Scenario: Reference for 16-bit SAR ADC in portable environmental monitoring equipment. IC Role / Device Role / Timing Role: Precision voltage reference for analog-to-digital conversion of pH, temperature, and gas sensor outputs. Use Value: 310 µVPP low-frequency noise avoids additional RC filtering, reducing BOM count and board area. |
| Battery-Powered Telematics Module | Medical Patient Monitor Analog Subsystem |
Use Scenario: Powering reference rail for LTE modem RF front-end DACs and sensor interface ICs in fleet-tracking devices. IC Role / Device Role / Timing Role: Low-quiescent LDO reference supplying stable 3.3 V to mixed-signal SoCs during GPS/LTE burst transmission. Use Value: 60 µA supply current extends 2000 mAh Li-ion battery life to >3 months in periodic-reporting mode. |
Use Scenario: Reference for ECG and SpO₂ analog signal chain in portable patient monitors. IC Role / Device Role / Timing Role: High-accuracy, low-drift reference for medical-grade ADCs meeting IEC 60601-2-27 requirements. Use Value: ±0.4% initial accuracy and 50 ppm long-term stability ensure diagnostic-grade measurement repeatability over 1000 hrs. |
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, 65 µA IQ, SO-8 package | Higher precision and lower tempco, but larger SO-8 footprint and no enable pin | Preferred when ultra-low drift is critical and board space allows SO-8; not drop-in due to pinout and lack of EN |
| ADR3433ARJZ-R7 | 3.3 V, ±0.1% initial accuracy, 10 ppm/°C tempco, 120 µA IQ, SOT-23-5 package, no enable | Same footprint and voltage, but higher quiescent current and no shutdown capability | Valid alternative if enable functionality is unused and 120 µA IQ is acceptable in the system power budget |
Compared with MAX6126AASA33+ and ADR3433ARJZ-R7, the LM4132DQ1MFT3.3 uniquely combines AEC-Q100 qualification, enable-controlled shutdown, and SOT-23-5 compatibility - making it the only choice for automotive-grade, space-constrained, low-power reference applications requiring functional safety support.
Availability
LM4132DQ1MFT3.3 is available at Aetrix Electronics and suitable for automotive engine control units, industrial data acquisition systems, battery-powered telematics modules, and medical patient monitor subsystems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for LM4132DQ1MFT3.3 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 company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with leadership in automotive, industrial, and precision analog markets.
The LM4132 family was designed specifically for high-accuracy, low-power, automotive-qualified voltage reference needs - bridging the performance gap between costly laser-trimmed bipolar references and cost-effective CMOS solutions.
FAQ
What is the operating temperature range for the LM4132DQ1MFT3.3?
The LM4132DQ1MFT3.3 is qualified per AEC-Q100 Grade 1, supporting continuous operation from –40°C to +125°C ambient temperature. This rating is verified across all electrical parameters including output voltage accuracy, tempco, and load regulation - making LM4132DQ1MFT3.3 suitable for under-hood automotive applications such as transmission control modules and battery management systems.
Does the LM4132DQ1MFT3.3 require an output capacitor for stability?
No, the LM4132DQ1MFT3.3 is internally compensated and stable without an output capacitor. A 0.1 µF ceramic capacitor on VREF is optional and improves transient response during fast load steps, but is not required for loop stability - simplifying layout and reducing BOM count compared to many competing references.
What is the minimum input voltage required for the LM4132DQ1MFT3.3 to maintain regulation?
The LM4132DQ1MFT3.3 requires VIN ≥ VREF + 400 mV for guaranteed operation, meaning a minimum of 3.7 V input at 25°C. At 10 mA load and –40°C to +125°C, the maximum dropout is 400 mV, so 3.7 V remains the practical minimum input to sustain 3.3 V output within specification across temperature and load.
How does the enable pin function on the LM4132DQ1MFT3.3?
The EN pin on LM4132DQ1MFT3.3 is active-high: applying ≥65% of VIN enables the output; applying ≤35% of VIN disables the output and reduces supply current to 3 µA. The pin has no internal pull-up or pull-down, so external logic or microcontroller GPIO must drive it directly - enabling precise power sequencing in multi-rail automotive systems.
Is the LM4132DQ1MFT3.3 pin-compatible with other members of the LM4132 family?
Yes, all LM4132 variants - including LM4132DQ1MFT3.3, LM4132AMF3.3, and LM4132BQ1MF3.3 - share identical SOT-23-5 (DBV) pinout, footprint, and thermal characteristics. Only the grade (A–E), automotive qualification (Q1), and output voltage differ - allowing design reuse across accuracy and qualification tiers without layout changes.
LM4132DQ1MFT3.3 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:
- ±0.4%
- 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
LM4132DQ1MFT3.3 FAQ
1.How can I place an order for LM4132DQ1MFT3.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DQ1MFT3.3 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 LM4132DQ1MFT3.3 reliable?
The price and inventory of LM4132DQ1MFT3.3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DQ1MFT3.3 is usually 5 days.
3.What payment methods are accepted for LM4132DQ1MFT3.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DQ1MFT3.3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DQ1MFT3.3?
LM4132DQ1MFT3.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DQ1MFT3.3 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 LM4132DQ1MFT3.3?
For technical support, including LM4132DQ1MFT3.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DQ1MFT3.3 requirements.
6.How does Aetrix verify that LM4132DQ1MFT3.3 is sourced from the original manufacturer or authorized distributors?
All LM4132DQ1MFT3.3 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 LM4132DQ1MFT3.3 meets industry standards.
7.What is the process for return or replacement of LM4132DQ1MFT3.3?
All LM4132DQ1MFT3.3 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DQ1MFT3.3, 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 LM4132DQ1MFT3.3 part is unused and in its original packaging.
Return procedure for LM4132DQ1MFT3.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132DQ1MFT3.3 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
Microchip Technology
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LM4040CYM3-4.1-TR
Microchip Technology
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LM4040EIM3-2.5/NOPB
Texas Instruments
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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
Texas Instruments
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LM4040DIM3-2.5/NOPB
Texas Instruments
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AZ431LANTR-G1
Diodes Incorporated
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