component
LM4121IM5-ADJ
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
markdownLM4121IM5-ADJ
Texas Instruments · Voltage Reference · SOT-23-5
LM4121IM5-ADJ 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 | Adj | input | VOUT Adjust pin for the adjustable option, used with feedback resistors R1 and R2 (keep each below 1 MΩ); its bias current is typically 15 nA and at most 40 nA flowing out of the pin, and the pin is sensitive to noise and capacitive loading. |
| 2 | GND | power_in | Negative supply or ground connection for the device; a single-point ground to the LM4121 helps ensure good accuracy at high load currents. |
| 3 | EN | input | Enable input that is pulled to the input supply for normal operation; about 6 µA into the pin is required to turn the part on, it must be taken close to GND to turn the output off, a minimum slew rate of about 0.003 V/µs is needed to avoid output glitches, and floating the pin is not recommended. |
| 4 | VIN | power_in | Positive supply input, specified for 1.8 V ≤ VIN ≤ 12 V, with the input and enable pins rated from −0.3 V to 14 V absolute maximum. |
| 5 | VOUT | output | Reference output that sources and sinks up to ±5 mA and tolerates indefinite output short-circuit duration. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
LM4121IM5-ADJ - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
lm4121im5-adj-etched.step/lm4121im5-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4121im5-adj.step/lm4121im5-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (23 pp, sha256
0ca0016b3d710f20, 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).