component
LM4132BQ1MFR2.5
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM4132BQ1MFR2.5
Texas Instruments · Voltage Reference · SOT-23-5
LM4132BQ1MFR2.5 from Texas Instruments, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | N/C | unconnected | No-connect pin that should be left floating on the PCB. |
| 2 | GND | power_in | Ground reference pin for the device. |
| 3 | EN | input | Enable input: drive EN between 65% of VIN and VIN to enable the reference, or between 0 V and 35% of VIN to disable it, and never let EN exceed VIN; an internal pullup of about 2 µA lets it float or be tied to VIN. |
| 4 | VIN | power_in | Input supply that must stay between VREF + 400 mV and 5.5 V at a 10 mA load, with the absolute maximum on any input being 6 V. |
| 5 | VREF | power_out | Reference voltage output that sources up to 20 mA for the LM4132, and is current-limited to 75 mA with indefinite protection when shorted to ground. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage initial accuracy (B grade, 2.5 V) | VREF | -0.1 | 0.1 | % | LM4132B-2.5 (B Grade - 0.1%) | 7 | |
| Temperature coefficient (B grade, 2.5 V) | TCVREF/°C | 20 | ppm/°C | –40°C ≤ TJ ≤ 125°C | 7 | ||
| Supply current | IQ | 100 | µA | –40°C ≤ TJ ≤ 125°C | 7 | ||
| Supply current in shutdown | IQ_SD | 7 | µA | –40°C ≤ TJ ≤ 125°C | 7 | ||
| Load regulation | ΔVREF/ΔILOAD | 120 | ppm/mA | –40°C ≤ TJ ≤ 125°C | 7 | ||
| Dropout voltage | VIN – VREF | 400 | mV | –40°C ≤ TJ ≤ 125°C | 7 | ||
| Short-circuit current | ISC | 75 | mA | –40°C ≤ TJ ≤ 125°C | 7 | ||
| Enable pin maximum low input level | VIL | 35 | % (VIN) | –40°C ≤ TJ ≤ 125°C | 7 | ||
| Enable pin minimum high input level | VIH | 65 | % (VIN) | –40°C ≤ TJ ≤ 125°C | 7 | ||
| Supply current | IQ | 60 | µA | 7 | |||
| Supply current in shutdown | IQ_SD | 3 | µA | EN = 0 V | 7 | ||
| Line regulation | ΔVREF/ΔVIN | 50 | ppm/V | VREF + 400 mV ≤ VIN ≤ 5.5 V | 7 | ||
| Load regulation | ΔVREF/ΔILOAD | 25 | ppm/mA | 0 mA ≤ ILOAD ≤ 20 mA | 7 | ||
| Long-term stability | ΔVREF | 50 | ppm | 1000 Hrs | 7 | ||
| Dropout voltage | VIN – VREF | 175 | mV | ILOAD = 10 mA | 7 | ||
| Output noise voltage | VN | 240 | µVPP | 0.1 Hz to 10 Hz | 7 | ||
| Thermal hysteresis | 75 | ppm | –40°C ≤ TJ ≤ 125°C | 7 | |||
| Maximum input supply voltage | 5.5 | V | 4 | ||||
| Maximum load current (LM4132) | 20 | mA | 4 | ||||
| Junction temperature | TJ | -40 | 125 | °C | 4 | ||
| Voltage on any input | -0.3 | 6 | V | 3 | |||
| Power dissipation | 350 | mW | TA = 25°C | 3 | |||
| Lead temperature (soldering) | 260 | °C | 10 sec | 3 | |||
| Lead temperature (vapor phase) | 215 | °C | 60 sec | 3 | |||
| Lead temperature (infrared) | 220 | °C | 15 sec | 3 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Junction-to-ambient thermal resistance | RθJA | 164.1 | °C/W | 4 | |||
| Junction-to-case (top) thermal resistance | RθJC(top) | 115.3 | °C/W | 4 | |||
| Junction-to-board thermal resistance | RθJB | 27.1 | °C/W | 4 | |||
| Junction-to-top characterization parameter | ψJT | 12.8 | °C/W | 4 | |||
| Junction-to-board characterization parameter | ψJB | 26.6 | °C/W | 4 |
CAD (KiCad official)
- Symbol:
LM4132BQ1MFR2.5 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
lm4132bq1mfr2-5-etched.step/lm4132bq1mfr2-5-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4132bq1mfr2-5.step/lm4132bq1mfr2-5.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (44 pp, sha256
4bd8402ff026fdf1, retrieved 2026-10-11, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).