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Texas Instruments LM4132BMFX-2.5/NOPB
- Part No.:
- LM4132BMFX-2.5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132BMFX-2.5/NOPB.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,579
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Product details
Overview
LM4132BMFX-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. It operates from VIN = VREF + 400 mV to 5.5 V, supports up to 20 mA load, and features an enable pin for 3 µA shutdown mode-ideal for high-accuracy ADC/DAC biasing in portable instrumentation.
For engineers reviewing the LM4132BMFX-2.5/NOPB datasheet, LM4132BMFX-2.5/NOPB pinout, LM4132BMFX-2.5/NOPB application, or LM4132BMFX-2.5/NOPB equivalent, key selection criteria include dropout voltage at 10 mA (175 mV), line regulation (50 ppm/V), load regulation (25 ppm/mA), thermal hysteresis (75 ppm), and SOT-23-5 package compatibility with low-ESR ceramic capacitors.
Technical Context
The LM4132BMFX-2.5/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without laser trimming. Its internal circuitry eliminates the need for an output capacitor or buffer amplifier while maintaining stability under varying load and input conditions.
It uses a 5-pin SOT-23 package with dedicated EN control, GND, VIN, and VREF terminals; the N/C pin (Pin 1) must remain floating. The device supports automotive-grade operation (–40°C to +125°C ambient) and meets AEC-Q100 Grade 1 requirements.
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 range |
| Dropout Voltage | 175 mV at 10 mA; allows operation from 2.675 V supply in battery-powered systems |
| Quiescent Current | 60 µA typical; extends runtime in always-on sensor nodes and portable meters |
| Shutdown Current | 3 µA at EN = 0 V; reduces system standby power by >95% vs active mode |
| Line Regulation | 50 ppm/V; maintains output stability across ±10% input variation in unregulated rails |
| Load Regulation | 25 ppm/mA; holds accuracy within ±50 µV over full 20 mA load range |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 1.0 mm max height, gull-wing leads. RoHS-compliant, lead-free, and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect | Must be left floating; no internal connection; avoids unintended coupling |
| 2 - GND | Ground reference | Primary return path for reference and enable circuitry; requires low-impedance PCB plane |
| 3 - EN | Enable control input | Active-high logic: VIH ≥65% VIN, VIL ≤35% VIN; controls 3 µA shutdown state |
| 4 - VIN | Input supply | Accepts 2.9 V to 5.5 V; minimum headroom = VREF + 400 mV for regulation |
| 5 - VREF | Precision output | 2.5 V reference source; drives ADCs, DACs, or comparator thresholds directly |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed band-gap | Compensates assembly-induced shifts in accuracy and tempco at package level |
| Capacitor-free stability | Operates stably with only optional COUT; eliminates BOM cost and layout area for output cap |
| Low-noise output | 240 µVPP (0.1–10 Hz); suitable for 16-bit SAR and delta-sigma ADC references |
| AEC-Q100 Grade 1 qualified | Validated for –40°C to +125°C ambient; supports automotive sensor and ECU designs |
| High output drive | 20 mA sink/source capability; eliminates need for external buffer in most applications |
Applications
| Portable Data Acquisition | Automotive Sensor Conditioning |
|---|---|
Use Scenario: Handheld multimeter acquiring 16-bit voltage measurements from thermocouples and RTDs. IC Role / Device Role / Timing Role: Primary 2.5 V reference for dual-slope and sigma-delta ADCs; sets full-scale range and offset null point. Use Value: 0.1% initial accuracy and 10 ppm/°C tempco ensure <±0.02% total error over 0–50°C operating range without calibration. | Use Scenario: Engine coolant temperature sensor signal conditioning module in Tier-1 powertrain control unit. IC Role / Device Role / Timing Role: Stable excitation and reference source for ratiometric bridge measurement and analog front-end amplifiers. Use Value: AEC-Q100 qualification and 125°C junction rating allow direct placement near engine bay electronics with no derating. |
| Industrial PLC Analog Input Module | Battery-Powered Medical Monitor |
Use Scenario: 8-channel 24-bit isolated analog input card for factory automation controllers. IC Role / Device Role / Timing Role: Per-channel precision reference for simultaneous-sampling ADCs; rejects supply ripple via 50 ppm/V line regulation. Use Value: 20 mA output drive powers multiple ADC reference inputs and op-amp bias networks without external buffers. | Use Scenario: Portable ECG monitor powered by single-cell Li-ion (3.0–4.2 V) with continuous 24-hour operation. IC Role / Device Role / Timing Role: Low-power 2.5 V reference for ultra-low-noise instrumentation amplifier and 16-bit ADC. Use Value: 60 µA quiescent current and 3 µA shutdown reduce reference subsystem contribution to <1 µA average system current. |
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, 0.2% initial accuracy, 50 ppm/°C tempco, no enable pin, 50 µA IQ | Lacks shutdown control; lower accuracy/tempco specs; SOT-23-3 package | Select when enable functionality is unnecessary and cost sensitivity outweighs precision requirements |
| ADR3425ARJZ-R7 | 2.5 V, 0.1% accuracy, 10 ppm/°C, no enable, 120 µA IQ, higher noise (30 µV RMS) | Higher quiescent current limits battery life; no shutdown mode; different pinout (SOT-23-5 but Pin 1 = VOUT) | Choose for legacy ADR34x footprint compatibility where enable control is not required |
Compared with REF3025AIDBZR and ADR3425ARJZ-R7, the LM4132BMFX-2.5/NOPB uniquely combines 0.1% accuracy, 10 ppm/°C tempco, enable-controlled shutdown, and 20 mA drive in a standard SOT-23-5-making it optimal for space-constrained, battery-sensitive, and automotive-grade precision systems requiring dynamic power management.
Availability
LM4132BMFX-2.5/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, industrial PLC analog inputs, and battery-powered medical monitors requiring stable component supply with long-term parametric consistency.
Supply support for LM4132BMFX-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 data acquisition, test equipment, and automotive sensor interfaces where stability, low power, and small size are critical.
FAQ
What is the maximum load current supported by the LM4132BMFX-2.5/NOPB?
The LM4132BMFX-2.5/NOPB delivers up to 20 mA of output current while maintaining specified accuracy and regulation. This capability eliminates the need for external buffer amplifiers in most precision applications, including driving multiple ADC reference inputs or op-amp bias networks. Performance remains within datasheet limits across the full –40°C to +125°C temperature range.
Does the LM4132BMFX-2.5/NOPB require an output capacitor for stability?
No, the LM4132BMFX-2.5/NOPB is internally compensated and stable without an output capacitor. A 0.1 µF ceramic capacitor (COUT) may be added to further reduce output noise, but it is optional-not required for loop stability. The device is explicitly characterized and guaranteed stable with low-ESR ceramic capacitors if used.
What is the dropout voltage specification for the LM4132BMFX-2.5/NOPB at 10 mA load?
The dropout voltage for the LM4132BMFX-2.5/NOPB is 175 mV at 10 mA load and 25°C. Over the full operating temperature range (–40°C to +125°C), the maximum dropout is 400 mV. This low dropout enables reliable operation from supplies as low as 2.675 V, making it suitable for single-cell Li-ion and coin-cell powered systems.
How does the enable pin (EN) function on the LM4132BMFX-2.5/NOPB?
The EN pin on the LM4132BMFX-2.5/NOPB is an active-high digital control input. When pulled to ≥65% of VIN, the device operates normally; when held ≤35% of VIN, it enters shutdown mode drawing only 3 µA. No external pull-up/down is required-EN can be driven directly from MCU GPIO or power supervisor outputs.
Is the LM4132BMFX-2.5/NOPB qualified for automotive applications?
Yes-the LM4132BMFX-2.5/NOPB is part of the LM4132-Q1 qualified family and meets AEC-Q100 Grade 1 requirements (–40°C to +125°C ambient). It is specifically validated for automotive sensor signal conditioning, body electronics, and infotainment subsystems where precision, reliability, and extended temperature operation are mandatory.
LM4132BMFX-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
LM4132BMFX-2.5/NOPB FAQ
1.How can I place an order for LM4132BMFX-2.5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132BMFX-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 LM4132BMFX-2.5/NOPB reliable?
The price and inventory of LM4132BMFX-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 LM4132BMFX-2.5/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132BMFX-2.5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132BMFX-2.5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132BMFX-2.5/NOPB?
LM4132BMFX-2.5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132BMFX-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 LM4132BMFX-2.5/NOPB?
For technical support, including LM4132BMFX-2.5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132BMFX-2.5/NOPB requirements.
6.How does Aetrix verify that LM4132BMFX-2.5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132BMFX-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 LM4132BMFX-2.5/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132BMFX-2.5/NOPB?
All LM4132BMFX-2.5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132BMFX-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 LM4132BMFX-2.5/NOPB part is unused and in its original packaging.
Return procedure for LM4132BMFX-2.5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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