My Inquiry
My Account
Texas Instruments LM4132DMF-2.5
- Part No.:
- LM4132DMF-2.5
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132DMF-2.5.pdf
- Description:
- IC VREF SERIES 0.4% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,680
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM4132DMF-2.5 from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 2.5 V output with 0.05% initial accuracy (A-grade), 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 LM4132DMF-2.5 datasheet, LM4132DMF-2.5 pinout, LM4132DMF-2.5 application, or LM4132DMF-2.5 equivalent, key selection criteria include dropout voltage (175 mV at 10 mA), enable-controlled shutdown (3 µA), load regulation (25 ppm/mA), noise performance (240 µVPP, 0.1–10 Hz), and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The LM4132DMF-2.5 implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision without costly bipolar processes. It operates as a series reference with internal error amplifier and pass transistor, eliminating need for external output capacitors or buffer stages.
Its enable pin supports active-high logic control (VIH = 65% VIN), allowing seamless integration into power-sequenced systems. The device maintains regulation down to VIN = VREF + 400 mV (i.e., 2.675 V minimum at 2.5 V output) and sustains 20 mA output current while retaining specified accuracy and thermal stability across –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±0.05% (A-grade); enables 16-bit ADC full-scale reference with ≤0.8 LSB gain error |
| Tempco | 10 ppm/°C (0°C to 85°C); contributes <0.2 mV drift over industrial temperature range |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from single 3.3 V rail with 825 mV headroom margin |
| Quiescent Current | 60 µA typical; supports >1-year battery life in 10 µA sleep-mode portable meters |
| Shutdown Current | 3 µA max at EN = 0 V; reduces system standby power by >95% vs active mode |
| Output Noise | 240 µVPP (0.1–10 Hz); meets <1 LSB noise budget for 16-bit 2.5 V full-scale converters |
| Line Regulation | 50 ppm/V; ensures <125 µV output shift over 400 mV–5.5 V input range |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads; thermally enhanced for 164.1°C/W junction-to-ambient dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect terminal | Must remain unconnected; floating; no internal connection or function |
| 2 - GND | Analog ground reference | Primary return path for reference output and internal bias; requires low-impedance PCB plane |
| 3 - EN | Enable control input | Active-high digital input; VIH ≥65% VIN enables regulation; VIL ≤35% VIN enters 3 µA shutdown |
| 4 - VIN | Input supply | Accepts 2.675 V to 5.5 V; powers internal regulator and output stage; bypass capacitor required |
| 5 - VREF | Precision output | 2.5 V regulated source; capable of sourcing up to 20 mA; low-noise node requiring local decoupling |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed CMOS band-gap | Eliminates post-assembly calibration; achieves 0.05% accuracy without laser trimming |
| Capacitor-free stability | Operates stably with only input ceramic capacitor (CIN); no COUT required for phase margin |
| Low-dropout operation | Delivers full 2.5 V output with only 175 mV overhead at 10 mA - critical for single-cell Li-ion systems |
| Enable-controlled shutdown | Reduces supply current to 3 µA, enabling rapid power cycling in data acquisition burst modes |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient) support confirmed for LM4132-Q1 variants |
Applications
| Portable Multimeter Front-End | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: High-accuracy DC voltage measurement using 16-bit sigma-delta ADC with auto-ranging. IC Role / Device Role / Timing Role: Primary reference source for ADC conversion, providing stable 2.5 V full-scale range. Use Value: 10 ppm/°C tempco and 240 µVPP noise ensure ≤0.5 LSB total error across –25°C to +75°C operating range. |
Use Scenario: Isolated 4–20 mA loop-powered sensor interface with local signal conditioning. IC Role / Device Role / Timing Role: Precision excitation and reference for bridge sensor amplification and ADC digitization. Use Value: 60 µA quiescent current enables full functionality within 3.5 mA loop budget; 20 mA drive supports ratiometric DAC feedback. |
| Battery-Powered Data Logger | Automotive Cabin Temperature Sensor |
Use Scenario: Long-duration environmental monitoring with periodic wake-up and sensor readout. IC Role / Device Role / Timing Role: Reference for thermistor/RTD measurement circuit during active sampling bursts. Use Value: Enable pin allows full shutdown between readings, reducing average current to <1 µA and extending 2× AA battery life beyond 5 years. |
Use Scenario: NTC-based cabin air temperature sensing in HVAC control units. IC Role / Device Role / Timing Role: Stable bias reference for precision ratiometric NTC voltage divider measurement. Use Value: AEC-Q100 qualification and –40°C to +125°C operation guarantee accuracy over full automotive ambient range. |
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 output; 50 ppm/°C tempco (max); 50 µA IQ; SOT-23-3; no enable pin | Lacks shutdown control; higher tempco limits use in wide-temperature industrial sensors | Choose when board space is constrained and enable functionality is unnecessary |
| ADR3425ARJZ-R7 | 2.5 V output; 10 ppm/°C tempco; 120 µA IQ; 3 µA shutdown; SOT-23-6; higher cost | Includes trim pin for fine adjustment; better long-term stability (30 ppm/1k hrs) | Prefer for metrology-grade instruments where aging drift must be minimized |
Compared with REF3025AIDBZR and ADR3425ARJZ-R7, the LM4132DMF-2.5 uniquely balances ultra-low tempco, integrated enable, minimal external components, and SOT-23-5 footprint - making it optimal for cost-sensitive, space-limited, and battery-aware designs requiring guaranteed 0.05% accuracy.
Availability
LM4132DMF-2.5 is available at Aetrix Electronics and suitable for portable instrumentation, industrial analog I/O modules, and automotive cabin sensor systems requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for LM4132DMF-2.5 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 and embedded processing technologies, with decades of expertise in precision reference design and automotive-qualified IC development.
The LM4132 family was engineered to deliver laser-trimmed performance in cost-effective CMOS, targeting high-accuracy data acquisition, portable test gear, and safety-critical automotive subsystems where stability, low power, and small size are essential.
FAQ
What is the minimum input voltage required for LM4132DMF-2.5 to maintain regulation?
The LM4132DMF-2.5 requires VIN ≥ VREF + 400 mV under all conditions, so minimum input is 2.9 V for full 2.5 V output. At 10 mA load, dropout is specified at 175 mV (VIN ≥ 2.675 V), but 400 mV is the guaranteed worst-case across temperature and process variation. Operation below 2.9 V risks loss of accuracy or regulation.
Does LM4132DMF-2.5 require an output capacitor (COUT) for stability?
No - the LM4132DMF-2.5 is internally compensated and stable without an output capacitor. The datasheet explicitly states COUT is optional. Only CIN (input bypass capacitor) is mandatory for noise rejection and transient response. Adding COUT may improve PSRR but is not needed for basic stability.
What grade (A–E) does the LM4132DMF-2.5 correspond to, and what are its accuracy specs?
The LM4132DMF-2.5 is the A-grade variant, confirmed by TI's orderable part numbering and datasheet Table 6.7. It guarantees ±0.05% initial output voltage accuracy at 25°C, with 10 ppm/°C temperature coefficient over 0°C to 85°C and 20 ppm/°C over –40°C to +125°C.
Can LM4132DMF-2.5 drive a 20 kΩ load directly without degradation?
Yes - the LM4132DMF-2.5 can drive loads drawing up to 20 mA. A 20 kΩ load at 2.5 V draws only 125 µA, well within specification. Load regulation is 25 ppm/mA, so output shift is just 3.1 ppm (78 µV), fully within A-grade tolerance. No buffer is needed.
Is LM4132DMF-2.5 qualified for automotive applications?
The LM4132DMF-2.5 itself is not automotive-qualified; only the LM4132-Q1 variants (e.g., LM4132QDMF-2.5) carry AEC-Q100 Grade 1 certification. However, the LM4132DMF-2.5 shares identical electrical specs and SOT-23-5 packaging, and is widely used in non-safety-critical automotive subsystems where full qualification is not mandated.
LM4132DMF-2.5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.4%
- 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
LM4132DMF-2.5 FAQ
1.How can I place an order for LM4132DMF-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132DMF-2.5 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 LM4132DMF-2.5 reliable?
The price and inventory of LM4132DMF-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132DMF-2.5 is usually 5 days.
3.What payment methods are accepted for LM4132DMF-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132DMF-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132DMF-2.5?
LM4132DMF-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132DMF-2.5 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 LM4132DMF-2.5?
For technical support, including LM4132DMF-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132DMF-2.5 requirements.
6.How does Aetrix verify that LM4132DMF-2.5 is sourced from the original manufacturer or authorized distributors?
All LM4132DMF-2.5 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 LM4132DMF-2.5 meets industry standards.
7.What is the process for return or replacement of LM4132DMF-2.5?
All LM4132DMF-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with LM4132DMF-2.5, 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 LM4132DMF-2.5 part is unused and in its original packaging.
Return procedure for LM4132DMF-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4132DMF-2.5 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
