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Texas Instruments LM4132BQ1MFT2.5
- Part No.:
- LM4132BQ1MFT2.5
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132BQ1MFT2.5.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:357
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Product details
Overview
LM4132BQ1MFT2.5 from Texas Instruments is an automotive-grade precision low-dropout voltage reference IC delivering a stable 2.5 V output with ±0.1% initial accuracy, 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent current - used in high-accuracy ADC/DAC biasing, battery-powered instrumentation, and automotive sensor signal conditioning.
For engineers reviewing the LM4132BQ1MFT2.5 datasheet, LM4132BQ1MFT2.5 pinout, LM4132BQ1MFT2.5 application, or LM4132BQ1MFT2.5 equivalent, this page provides verified technical context, SOT-23 pin mapping, real-world use cases in automotive and portable systems, and validated alternative options for design flexibility and supply continuity.
Technical Context
The LM4132BQ1MFT2.5 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 enable-controlled shutdown mode and delivers up to 20 mA output current without requiring an output capacitor.
Its input range starts at VREF + 400 mV (i.e., ≥2.9 V) and extends to 5.5 V, supporting operation from single Li-ion cells or regulated 3.3 V/5 V rails. The device meets AEC-Q100 Grade 1 (–40°C to +125°C ambient) and includes HBM ESD rating of ±2000 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±0.1% (B grade, 25°C); enables precise 12-bit+ ADC reference scaling |
| Tempco | 10 ppm/°C (0°C to 85°C); ensures ≤±0.25 mV drift over industrial temperature span |
| Quiescent Current | 60 µA typical; supports >1-year battery life in always-on sensor nodes |
| Shutdown Current | 3 µA at EN = 0 V; allows ultra-low-power sleep-state operation |
| Dropout Voltage | 175 mV at 10 mA load; permits regulation from 2.675 V input (e.g., aged LiFePO₄) |
| Load Regulation | 25 ppm/mA (0–20 mA); maintains <±50 µV error across full output current range |
| Line Regulation | 50 ppm/V (2.9 V to 5.5 V input); rejects ripple and supply variation in noisy environments |
Pinout & Package
SOT-23 (DBV) 5-pin package, 2.90 mm × 1.60 mm body size, with exposed pad not electrically connected. Pin 1 is NC (no connect), pin 2 is GND, pin 3 is EN, pin 4 is VIN, and pin 5 is VREF.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (NC) | No-connect terminal | Must remain floating; no PCB trace or solder connection required |
| Pin 2 (GND) | Analog ground reference | Primary return path for reference output and internal band-gap core |
| Pin 3 (EN) | Digital enable input | Active-high logic; VIH ≥65% VIN, VIL ≤35% VIN; controls 3 µA shutdown state |
| Pin 4 (VIN) | Input supply rail | Accepts 2.9 V to 5.5 V; requires ≥100 nF ceramic CIN between VIN and GND |
| Pin 5 (VREF) | Precision output terminal | Delivers 2.5 V ±0.1%; stable into capacitive loads up to 10 µF |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient operation from –40°C to +125°C |
| EEPROM-trimmed curvature compensation | Eliminates assembly-induced tempco shift; achieves 10 ppm/°C without laser trimming |
| Capacitor-free stability | Operates reliably with only input capacitor (CIN); no COUT needed for phase margin |
| 20 mA output drive capability | Directly powers SAR ADC references or op-amp bias networks without buffer stages |
| Low-noise 0.1–10 Hz output | 240 µVPP typical; suitable for high-resolution data acquisition front-ends |
Applications
| Automotive Cabin Sensors | Portable Data Loggers |
|---|---|
Use Scenario: Monitoring cabin temperature, humidity, and CO₂ levels in ADAS-equipped vehicles using analog sensor outputs. IC Role / Device Role / Timing Role: Provides stable 2.5 V reference for 16-bit sigma-delta ADCs converting sensor signals. Use Value: Enables <±0.1% measurement accuracy across –40°C to +125°C ambient, meeting ISO 26262 ASIL-B functional safety requirements. |
Use Scenario: Battery-powered environmental monitoring units deployed in remote field locations for weeks without maintenance. IC Role / Device Role / Timing Role: Supplies precision reference for multi-channel ADCs sampling thermocouples and pressure transducers. Use Value: 60 µA quiescent current and 3 µA shutdown mode extend lithium primary cell life beyond 2 years in intermittent-sampling mode. |
| Industrial PLC Analog Inputs | Medical Patient Monitoring |
Use Scenario: Modular I/O modules in programmable logic controllers acquiring 4–20 mA loop signals and RTD measurements. IC Role / Device Role / Timing Role: Serves as master reference for isolated 24-bit delta-sigma ADCs in analog input cards. Use Value: 10 ppm/°C tempco and 50 ppm/V line regulation ensure <±0.01% gain stability over wide supply and temperature variations. |
Use Scenario: Portable ECG and pulse oximetry devices requiring clinical-grade signal fidelity and long battery runtime. IC Role / Device Role / Timing Role: Generates clean 2.5 V bias for instrumentation amplifiers and anti-alias filters in analog front-end. Use Value: 240 µVPP low-frequency noise prevents baseline wander and preserves ST-segment resolution in sub-µV ECG signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6126AASA25+ | 2.5 V, ±0.06% initial accuracy, 3 ppm/°C tempco, 12 µA IQ, SOT-23-5 | Lower noise (1.2 µVPP, 0.1–10 Hz) but limited to 10 mA output; not AEC-Q100 qualified | Preferred for ultra-low-noise medical or test equipment where automotive qualification is unnecessary |
| ADR3425ARJZ-R7 | 2.5 V, ±0.1% initial accuracy, 10 ppm/°C tempco, 120 µA IQ, SOT-23-5 | Higher quiescent current; supports wider input range (1.7 V to 5.5 V); AEC-Q100 Grade 2 (–40°C to +105°C) | Selected when wider VIN range or lower minimum dropout (1.7 V) is critical, accepting higher IQ penalty |
Compared with MAX6126AASA25+ and ADR3425ARJZ-R7, the LM4132BQ1MFT2.5 uniquely balances automotive qualification, 20 mA drive strength, and capacitor-free stability - making it optimal for space-constrained, high-reliability embedded systems where output loading and environmental robustness are primary constraints.
Availability
LM4132BQ1MFT2.5 is available at Aetrix Electronics and suitable for automotive sensor modules, portable instrumentation, and industrial PLC analog inputs requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for LM4132BQ1MFT2.5 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 expertise in precision reference design and automotive qualification.
The LM4132 family was engineered to deliver laser-trimmed performance using cost-effective CMOS + EEPROM trimming - targeting high-accuracy, low-power, and automotive-critical applications where reliability and thermal stability are non-negotiable.
FAQ
What is the maximum input voltage for the LM4132BQ1MFT2.5?
The LM4132BQ1MFT2.5 supports a maximum input voltage of 5.5 V across its specified operating temperature range. Exceeding this limit risks permanent damage, as defined in the Absolute Maximum Ratings table. Operation above 5.5 V - even briefly - may degrade long-term stability or trigger latch-up. Always include input overvoltage protection if upstream rails exceed 5.5 V.
Does the LM4132BQ1MFT2.5 require an output capacitor (COUT)?
No, the LM4132BQ1MFT2.5 is designed to be stable without an output capacitor. Its internal compensation allows direct connection to ADC reference inputs or op-amp bias nodes. While optional COUT (e.g., 100 nF ceramic) can reduce high-frequency noise, it is not required for stability - unlike many older LDO references. This simplifies layout and reduces BOM count.
What does the 'Q1' suffix indicate in LM4132BQ1MFT2.5?
The 'Q1' suffix denotes AEC-Q100 qualification for automotive applications. Specifically, LM4132BQ1MFT2.5 is Grade 1 qualified for ambient temperatures from –40°C to +125°C, with HBM ESD rating of ±2000 V. This distinguishes it from commercial-grade LM4132Bxx variants and confirms compliance with automotive reliability and stress-test requirements.
Can the LM4132BQ1MFT2.5 drive a 20 kΩ load at full accuracy?
Yes - the LM4132BQ1MFT2.5 delivers 2.5 V with ±0.1% initial accuracy into loads down to 125 Ω (20 mA). A 20 kΩ load draws only 125 µA, well within specification, and introduces negligible error (<0.003% due to load regulation of 25 ppm/mA). No additional buffering is needed for such light loads.
How is the enable pin (EN) of the LM4132BQ1MFT2.5 interfaced with a microcontroller?
The EN pin of the LM4132BQ1MFT2.5 is a CMOS-compatible digital input with VIH ≥65% VIN and VIL ≤35% VIN. When driven by a 3.3 V GPIO, it reliably activates above ~2.15 V and deactivates below ~1.15 V - compatible with standard 3.3 V logic. Pull-up/pull-down resistors are unnecessary unless the MCU pin floats during reset.
LM4132BQ1MFT2.5 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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 20ppm/°C
- Noise - 0.1Hz to 10Hz:
- 240µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.9V ~ 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
LM4132BQ1MFT2.5 FAQ
1.How can I place an order for LM4132BQ1MFT2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132BQ1MFT2.5 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 LM4132BQ1MFT2.5 reliable?
The price and inventory of LM4132BQ1MFT2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132BQ1MFT2.5 is usually 5 days.
3.What payment methods are accepted for LM4132BQ1MFT2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132BQ1MFT2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132BQ1MFT2.5?
LM4132BQ1MFT2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132BQ1MFT2.5 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 LM4132BQ1MFT2.5?
For technical support, including LM4132BQ1MFT2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132BQ1MFT2.5 requirements.
6.How does Aetrix verify that LM4132BQ1MFT2.5 is sourced from the original manufacturer or authorized distributors?
All LM4132BQ1MFT2.5 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 LM4132BQ1MFT2.5 meets industry standards.
7.What is the process for return or replacement of LM4132BQ1MFT2.5?
All LM4132BQ1MFT2.5 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132BQ1MFT2.5, 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 LM4132BQ1MFT2.5 part is unused and in its original packaging.
Return procedure for LM4132BQ1MFT2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132BQ1MFT2.5 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
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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