component
LM4128BQ1MF3.3
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
markdownLM4128BQ1MF3.3
Texas Instruments · Voltage Reference · SOT-23-5
LM4128BQ1MF3.3 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; leave floating. |
| 2 | GND | power_in | Ground reference for the device. |
| 3 | EN | input | Enable pin: the datasheet gives a maximum low input level of 35 %V and a minimum high input level of 65 %V, and the enable input voltage is rated at a maximum of VIN; the pin provides a shutdown mode with about 3 µA supply current (IQ_SD max 7 µA at EN = 0 V). |
| 4 | VIN | power_in | Input supply, specified for a range of VREF + 400 mV to 5.5 V, with a maximum input supply voltage of 5.5 V and an absolute maximum of -0.3 V to 6 V on any input. |
| 5 | VREF | power_out | Reference voltage output, rated for a maximum load current of 20 mA and a short-circuit current of 75 mA, and stable with capacitive loads up to 10 µF. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
LM4128BQ1MF3.3 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
lm4128bq1mf3-3-etched.step/lm4128bq1mf3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4128bq1mf3-3.step/lm4128bq1mf3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (35 pp, sha256
e27d30b33d01ce1e, retrieved 2026-10-10, 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).