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Texas Instruments LM4132BMF-2.5/NOPB
- Part No.:
- LM4132BMF-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132BMF-2.5/NOPB.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,285
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Product details
Overview
LM4132BMF-2.5/NOPB from Texas Instruments is a precision low-dropout (LDO) series 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-resolution ADC/DAC biasing, portable instrumentation, and battery-powered test equipment.
For engineers reviewing the LM4132BMF-2.5/NOPB datasheet, LM4132BMF-2.5/NOPB pinout, LM4132BMF-2.5/NOPB application, or LM4132BMF-2.5/NOPB equivalent, key selection criteria include dropout voltage (175 mV at 10 mA), enable-controlled shutdown (3 µA), load regulation (25 ppm/mA), and SOT-23-5 compatibility with ceramic capacitors only.
Technical Context
The LM4132BMF-2.5/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without laser trimming. It operates as a 2.5 V series reference with internal enable logic and no requirement for an output buffer or mandatory output capacitor.
Its functional modes include active regulation (EN ≥ 65% VIN) and ultra-low-power shutdown (EN ≤ 35% VIN), with input voltage range from 2.9 V (2.5 V + 400 mV) to 5.5 V. Thermal hysteresis is specified at 75 ppm over –40°C to 125°C cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±0.1% (B-grade initial accuracy at 25°C) |
| Tempco | 10 ppm/°C (0°C to 85°C); enables <±0.2 mV drift over industrial temp range |
| Dropout Voltage | 175 mV at 10 mA load; supports operation from 2.9 V input in space-constrained systems |
| Quiescent Current | 60 µA typical; ensures >1-year battery life in 10-µA sleep-cycle portable devices |
| Shutdown Current | 3 µA max; reduces system standby power by >95% vs active mode |
| Load Regulation | 25 ppm/mA (0–20 mA); maintains <±50 µV output shift across full load range |
| Noise (0.1–10 Hz) | 240 µVPP; suitable for 16-bit+ data acquisition without external filtering |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads. RoHS-compliant, lead-free, and qualified per AEC-Q100 Grade 1 (–40°C to +125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect | Must be left floating; not internally bonded |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal circuitry |
| 3 - EN | Enable control input | Active-high logic; VIH = 65% VIN, VIL = 35% VIN; controls shutdown state |
| 4 - VIN | Input supply | Accepts 2.9 V to 5.5 V; supplies internal regulator and reference core |
| 5 - VREF | Precision output | 2.5 V regulated output; capable of sourcing up to 20 mA |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Eliminates need for external calibration; achieves 0.1% accuracy without laser trimming |
| Stable with low-ESR ceramic capacitors only | Removes requirement for tantalum or electrolytic output caps - reduces BOM count and board area |
| 20-mA output drive capability | Directly drives ADC reference inputs, op-amp bias networks, or small DACs without buffer stages |
| Low dropout (175 mV @ 10 mA) | Enables use with single-cell Li-ion (3.0 V min) or two-cell alkaline (2.4 V min) supplies |
| AEC-Q100 Grade 1 qualification | Validated for automotive cabin electronics, engine control sensors, and industrial controllers |
Applications
| Portable Data Loggers | Industrial PLC Analog Inputs |
|---|---|
|
Use Scenario: Battery-powered environmental sensor node recording temperature, humidity, and pressure at 100 Hz with 16-bit resolution. IC Role / Device Role / Timing Role: Provides stable 2.5 V reference for SAR ADC and microcontroller VREF pin. Use Value: 10 ppm/°C tempco and 240 µVPP noise ensure <±0.01% measurement error across –20°C to 70°C operating range. |
Use Scenario: Modular analog input card in a DIN-rail PLC accepting 4–20 mA and ±10 V field signals. IC Role / Device Role / Timing Role: Supplies precision reference for isolated sigma-delta ADC front-end and internal DAC calibration. Use Value: 20 mA drive strength and 25 ppm/mA load regulation eliminate gain drift during channel scanning. |
| Automotive Cabin Control Units | Medical Patient Monitor Front-Ends |
|
Use Scenario: HVAC control module measuring cabin temperature and humidity with thermistor and capacitive sensors. IC Role / Device Role / Timing Role: Reference source for ratiometric sensor excitation and ADC conversion in ASIL-B subsystems. Use Value: AEC-Q100 Grade 1 qualification and 75 ppm thermal hysteresis ensure repeatable readings after thermal cycling. |
Use Scenario: ECG/SpO₂ front-end board digitizing biopotential signals with 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Low-noise 2.5 V reference for ADC reference and programmable gain amplifier biasing. Use Value: 240 µVPP (0.1–10 Hz) noise and 60 µA IQ enable >110 dB SNR in ultra-low-power patient-worn designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3025AIDBZR | Fixed 2.5 V, 50 ppm/°C max tempco, 50 µA IQ, no enable pin, SOT-23-3 | Lacks shutdown mode and has higher tempco; requires external enable circuitry for power gating | Choose when board space is critical and shutdown is unnecessary; lower cost but reduced thermal stability |
| ADR3425ARJZ-R7 | 2.5 V, 10 ppm/°C max, 120 µA IQ, no enable, SOT-23-5 pinout compatible but pin 3 is NC (not EN) | Higher supply current and no integrated enable; requires external MOSFET for shutdown | Prefer when long-term stability (30 ppm/1000 hrs) is prioritized over low IQ; same footprint but different function on pin 3 |
Compared with REF3025AIDBZR and ADR3425ARJZ-R7, the LM4132BMF-2.5/NOPB uniquely integrates enable control, ultra-low shutdown current (3 µA), and matched 10 ppm/°C tempco in a standard SOT-23-5 - making it optimal for battery-critical, thermally demanding, and power-gated precision systems.
Availability
LM4132BMF-2.5/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial PLC analog modules, and automotive cabin control units requiring stable component supply with guaranteed long-term availability and traceable lot documentation.
Supply support for LM4132BMF-2.5/NOPB 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 specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and signal chain solutions.
The LM4132 family was designed to deliver laser-trimmed performance using cost-effective CMOS + EEPROM trimming - targeting high-accuracy, low-power, and automotive-grade voltage references for data converters and sensor interfaces.
FAQ
What is the maximum load current supported by the LM4132BMF-2.5/NOPB?
The LM4132BMF-2.5/NOPB supports up to 20 mA of continuous output current while maintaining specified accuracy and regulation. At 10 mA load, dropout voltage is 175 mV; at full 20 mA, output remains within ±0.5% of 2.5 V under recommended operating conditions. Exceeding 20 mA may cause thermal overload or accuracy degradation.
Does the LM4132BMF-2.5/NOPB require an output capacitor for stability?
No, the LM4132BMF-2.5/NOPB is stable with no output capacitor required. It is specifically characterized to operate stably with low-ESR ceramic capacitors only - and does not require, nor benefit from, bulk electrolytic or tantalum output capacitance. COUT is optional and typically omitted unless noise filtering is needed.
What is the input voltage range for the LM4132BMF-2.5/NOPB?
The LM4132BMF-2.5/NOPB operates with an input voltage range of VREF + 400 mV to 5.5 V - i.e., 2.9 V minimum to 5.5 V maximum. Below 2.9 V, regulation fails; above 5.5 V risks absolute maximum rating violation. At 2.9 V input, the device delivers full 20 mA load with 0.5% accuracy loss threshold met.
How does the enable pin (EN) function on the LM4132BMF-2.5/NOPB?
The EN pin on the LM4132BMF-2.5/NOPB is an active-high digital control: logic high (≥65% VIN) enables regulation; logic low (≤35% VIN) places the device in 3 µA shutdown mode. No external pull-up/down is required - the pin has no internal bias. It is not a linear control input and does not support PWM dimming or analog modulation.
Is the LM4132BMF-2.5/NOPB qualified for automotive applications?
Yes, the LM4132BMF-2.5/NOPB is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), with HBM ESD rating of ±2000 V. It meets automotive reliability requirements for cabin electronics, body control modules, and non-safety-critical powertrain sensors - though not certified for ASIL-D or safety-critical functions without system-level validation.
LM4132BMF-2.5/NOPB 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4132BMF-2.5/NOPB FAQ
1.How can I place an order for LM4132BMF-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132BMF-2.5/NOPB 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 LM4132BMF-2.5/NOPB reliable?
The price and inventory of LM4132BMF-2.5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132BMF-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132BMF-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132BMF-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132BMF-2.5/NOPB?
LM4132BMF-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132BMF-2.5/NOPB 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 LM4132BMF-2.5/NOPB?
For technical support, including LM4132BMF-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132BMF-2.5/NOPB requirements.
6.How does Aetrix verify that LM4132BMF-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132BMF-2.5/NOPB 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 LM4132BMF-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132BMF-2.5/NOPB?
All LM4132BMF-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132BMF-2.5/NOPB, 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 LM4132BMF-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4132BMF-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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