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Texas Instruments LM4132DQ1MFR3.3
- Part No.:
- LM4132DQ1MFR3.3
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DQ1MFR3.3.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,163
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Product details
Overview
LM4132DQ1MFR3.3 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, supports up to 25 mA load current (Q1 automotive grade), and operates from VIN = VREF + 400 mV to 5.5 V - ideal for automotive sensor signal conditioning and high-accuracy ADC biasing.
For engineers reviewing the LM4132DQ1MFR3.3 datasheet, LM4132DQ1MFR3.3 pinout, LM4132DQ1MFR3.3 application, or LM4132DQ1MFR3.3 equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade specifications (AEC-Q100 Grade 1), real-world application mappings, and two rigorously cross-checked alternative parts - all derived from TI's official SNVS372G datasheet and orderable part documentation.
Technical Context
The LM4132DQ1MFR3.3 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision in cost-effective plastic packaging. Its internal architecture eliminates need for output capacitors or buffer amplifiers while sustaining 25 mA output - a key differentiator versus conventional LDO references.
This device operates in two functional modes: active regulation (EN ≥ 65% of VIN) and ultra-low-power shutdown (EN ≤ 35% of VIN), with guaranteed 3 µA supply current in shutdown. The dropout voltage is specified at 175 mV (typical) under 10 mA load, supporting operation from as low as 3.475 V input in automotive 3.3 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V nominal, ±0.4% initial accuracy (D grade) - enables direct interface with 3.3 V ADCs without calibration overhead |
| Tempco | 20 ppm/°C (–40°C to +125°C) - ensures ≤±0.825 mV drift across full automotive temperature range |
| Quiescent Current | 60 µA (active), 3 µA (shutdown) - extends battery life in always-on vehicle modules |
| Max Load Current | 25 mA - sufficient to drive SAR ADC reference inputs and small op-amp bias networks |
| Dropout Voltage | 175 mV (typical at 10 mA) - allows operation from 3.475 V input, compatible with post-LDO 3.3 V rails |
| Noise (0.1–10 Hz) | 310 µVPP - suitable for 16-bit+ data acquisition where reference noise dominates system ENOB |
| Line Regulation | 85 ppm/V - maintains stability despite battery voltage sag or ripple in automotive 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 N/C (no connect); pins are arranged top-view with marking dot adjacent to Pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (N/C) | No-connect terminal | Must be left floating; no internal connection - avoids unintended parasitic paths |
| 2 (GND) | Analog ground reference | Primary return path for reference output; requires low-impedance PCB connection to minimize noise coupling |
| 3 (EN) | Digital enable control input | Active-high logic: VIH ≥ 65% VIN enables regulation; VIL ≤ 35% VIN enters 3 µA shutdown |
| 4 (VIN) | Input supply rail | Accepts 3.475 V to 5.5 V; must be bypassed with ≥1 µF ceramic capacitor per datasheet layout guidelines |
| 5 (VREF) | Precision reference output | 3.3 V regulated output capable of sourcing up to 25 mA; no external capacitor required for stability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive powertrain and ADAS environmental requirements |
| EEPROM-trimmed curvature compensation | Eliminates need for laser trimming; achieves 0.4% accuracy and 20 ppm/°C tempco in plastic SOT-23 |
| Capacitor-free output stability | Stable with zero output capacitance - reduces BOM count and PCB area in space-constrained modules |
| Low-noise 3.3 V reference | 310 µVPP (0.1–10 Hz) enables high-resolution analog front-ends without external filtering |
| Enable-controlled shutdown | Reduces supply current to 3 µA - critical for low-power wake-on-event automotive subsystems |
Applications
| Automotive Engine Control Unit (ECU) Sensor Biasing | Industrial 16-Bit Data Acquisition System |
|---|---|
Use Scenario: Providing stable excitation voltage for RTD and strain gauge bridges in engine coolant temperature and manifold absolute pressure sensors. IC Role / Device Role / Timing Role: Precision voltage reference supplying ratiometric bias to bridge circuits, directly feeding instrumentation amplifier inputs. Use Value: 20 ppm/°C tempco ensures <±1.5 °C measurement error over full engine operating range; 25 mA drive supports multiple parallel sensor channels. |
Use Scenario: Reference source for 16-bit SAR ADCs in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Primary reference for ADC conversion, determining absolute accuracy of current/voltage measurements. Use Value: 310 µVPP low-frequency noise preserves effective number of bits (ENOB); ±0.4% accuracy eliminates per-unit calibration. |
| Portable Medical Pulse Oximeter | Automotive ADAS Camera Power Management |
Use Scenario: Supplying reference voltage to transimpedance amplifiers and ADCs processing photodiode signals in battery-powered oximeters. IC Role / Device Role / Timing Role: Low-noise, low-quiescent-current reference enabling >24-hour battery life while maintaining SpO₂ measurement fidelity. Use Value: 60 µA active current and 3 µA shutdown extend runtime; capacitor-free operation simplifies miniaturized flex PCB design. |
Use Scenario: Generating clean 3.3 V reference for image signal processor (ISP) power sequencing and ADC reference in surround-view camera ECUs. IC Role / Device Role / Timing Role: Stable reference ensuring consistent analog gain and digital conversion across varying vehicle battery conditions (9–16 V). Use Value: 85 ppm/V line regulation rejects battery ripple; AEC-Q100 qualification guarantees reliability in 15-year automotive lifecycle. |
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, 1.2 mA supply current, SO-8 package | Higher precision and lower noise, but 20× higher quiescent current and larger footprint | Select when ultimate accuracy (<0.1%) and ultra-low tempco dominate over power and size constraints |
| ADR3433ARJZ-R7 | 3.3 V, ±0.1% initial accuracy, 10 ppm/°C tempco, 120 µA supply current, SOT-23 package | Same footprint and enable functionality, but lower grade accuracy and higher IQ than LM4132DQ1MFR3.3 | Select for non-automotive industrial use where AEC-Q100 is unnecessary and cost sensitivity favors Analog Devices' volume pricing |
Compared with MAX6126AASA33+ and ADR3433ARJZ-R7, the LM4132DQ1MFR3.3 uniquely balances automotive qualification, 3 µA shutdown, capacitor-free stability, and SOT-23 size - making it optimal for space- and power-constrained automotive sensing nodes where ±0.4% accuracy is sufficient.
Availability
LM4132DQ1MFR3.3 is available at Aetrix Electronics and suitable for automotive ECU sensor biasing, industrial PLC analog input modules, portable medical devices, and ADAS camera power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM4132DQ1MFR3.3 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, designing and manufacturing analog and embedded processing chips used in industrial, automotive, and consumer electronics.
The LM4132 family was engineered to deliver laser-trimmed reference performance using cost-effective CMOS and EEPROM trimming - specifically targeting automotive and industrial applications demanding high accuracy, low power, and AEC-Q100 compliance in compact packages.
FAQ
What is the maximum load current supported by the LM4132DQ1MFR3.3?
The LM4132DQ1MFR3.3 supports up to 25 mA of output current, as specified in its LM4132-3.3-Q1 electrical characteristics table (Section 6.10 of SNVS372G). This rating applies across the full –40°C to +125°C operating temperature range and exceeds the 20 mA capability of standard LM4132-3.3 variants, reflecting its automotive Q1 qualification.
Does the LM4132DQ1MFR3.3 require an output capacitor for stability?
No, the LM4132DQ1MFR3.3 does not require an output capacitor for stability. Its internal design ensures unconditional stability with zero output capacitance, as confirmed in the "Simplified Schematic" and "Applications and Implementation" sections of the TI datasheet. An output capacitor may be added for additional noise filtering but is not necessary for regulation integrity.
What is the enable pin threshold voltage for the LM4132DQ1MFR3.3?
The LM4132DQ1MFR3.3 enable pin has a threshold defined relative to VIN: VIH (minimum high level) is 65% of VIN, and VIL (maximum low level) is 35% of VIN, per Section 6.9 and 6.10 of the datasheet. This ratiometric behavior ensures reliable enable/disable operation across varying input voltages from 3.475 V to 5.5 V.
Is the LM4132DQ1MFR3.3 qualified for automotive applications?
Yes, the LM4132DQ1MFR3.3 is AEC-Q100 qualified for Automotive Grade 1 (–40°C to +125°C ambient), with HBM ESD classification Level 2. This qualification is explicitly documented in the "Features" section and "Electrical Characteristics LM4132-3.3-Q1" table (Section 6.10) of the SNVS372G datasheet.
What is the typical output noise of the LM4132DQ1MFR3.3 in the 0.1–10 Hz band?
The LM4132DQ1MFR3.3 delivers 310 µVPP typical output noise in the 0.1–10 Hz band, as specified in Section 6.9 (LM4132-3.3) and Section 6.10 (LM4132-3.3-Q1) of the TI datasheet. This low-frequency noise performance supports high-resolution data acquisition without requiring external noise-reduction circuitry.
LM4132DQ1MFR3.3 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
LM4132DQ1MFR3.3 FAQ
1.How can I place an order for LM4132DQ1MFR3.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DQ1MFR3.3 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 LM4132DQ1MFR3.3 reliable?
The price and inventory of LM4132DQ1MFR3.3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DQ1MFR3.3 is usually 5 days.
3.What payment methods are accepted for LM4132DQ1MFR3.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DQ1MFR3.3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DQ1MFR3.3?
LM4132DQ1MFR3.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DQ1MFR3.3 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 LM4132DQ1MFR3.3?
For technical support, including LM4132DQ1MFR3.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DQ1MFR3.3 requirements.
6.How does Aetrix verify that LM4132DQ1MFR3.3 is sourced from the original manufacturer or authorized distributors?
All LM4132DQ1MFR3.3 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 LM4132DQ1MFR3.3 meets industry standards.
7.What is the process for return or replacement of LM4132DQ1MFR3.3?
All LM4132DQ1MFR3.3 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DQ1MFR3.3, 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 LM4132DQ1MFR3.3 part is unused and in its original packaging.
Return procedure for LM4132DQ1MFR3.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132DQ1MFR3.3 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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