component
TMI3411
Public Made by Adomby adom
TMI DC-DC Converters, SOT-23-5. Pinout extracted from 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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Contents
README
markdownTMI3411
TMI · DC-DC Converters · SOT-23-5
TMI3411 from TMI, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | EN | input | Chip Enable. Drive above the EN rising threshold (typ 1.1V @ VIN=5V, 0.9V @ VIN=3.3V; hysteresis ~0.1V) to enable the converter; drive below the falling threshold to shut down (shutdown current <1µA). Do not leave floating. Absolute max 6.5V. |
| 2 | GND | power_in | Device ground return. Also serves as the source connection for the internal low-side N-channel MOSFET and reference for the internal bias. |
| 3 | LX | output | Power switch node output. Connects to the drains of the internal P-channel high-side and N-channel low-side MOSFETs and to the external inductor. RDS(on) typ 180 mΩ (PMOS) / 70 mΩ (NMOS); rated up to 2A output current. Absolute max -0.3 to 6.5V (transient -3.5 to 7.5V for <5ns). |
| 4 | VIN | power_in | Power supply input, 2.5V to 6.0V operating range. UVLO ~2.3V, OVP ~6.5V. Bypass with a low-ESR ceramic capacitor (22µF typ) placed as close as possible to the pin. Absolute max 6.5V. |
| 5 | FB | input | Output voltage feedback. Connect to the mid-point of the external resistor divider from VOUT to GND; internal reference is 0.600V (typ). VOUT = 0.6 × (1 + R1/R2), adjustable from 0.6V up to near VIN. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TMI |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
TMI3411
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Supply Voltage | -0.3 | 6.5 | V | 2 | |||
| LX Voltages | -0.3 | 6.5 | V | 2 | |||
| EN, FB Voltage | -0.3 | 6.5 | V | 2 | |||
| LX Voltage (<10ns transient) | -2.5 | 7 | V | <10ns transient | 2 | ||
| LX Voltage (<5ns transient) | -3.5 | 7.5 | V | <5ns transient | 2 | ||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Junction Temperature | 160 | °C | 2 | ||||
| Power Dissipation | 600 | mW | 2 | ||||
| Lead Temperature | 260 | °C | Soldering, 10s | 2 | |||
| ESD Human Body Model (all pins) | VESD_HBM | -2000 | 2000 | V | JEDEC JS-001 | 3 | |
| ESD Charged Device Model (all pins) | VESD_CDM | -1000 | 1000 | V | JEDEC JS-001 | 3 | |
| Voltage Range IN | 2.5 | 6 | V | 3 | |||
| TJ Operating Junction Temperature Range | TJ | -40 | 125 | °C | 3 | ||
| Input Voltage Range | 2.5 | 6 | V | 4 | |||
| Quiescent Current | IQ | 40 | 75 | µA | VEN=2.0V, IOUT=0A, VFB=VREF*105% | 4 | |
| Shutdown Current | 0.1 | 1 | µA | VEN = 0V | 4 | ||
| Regulated Feedback Voltage | VREF | 0.588 | 0.6 | 0.612 | V | TA = 25°C | 4 |
| On Resistance of PMOS | 180 | 220 | mΩ | ILX=100mA | 4 | ||
| On Resistance of NMOS | 70 | 110 | mΩ | ILX=-100mA | 4 | ||
| Peak Current Limit | 2.3 | 2.5 | 3.5 | A | VIN=5V, VOUT=90% | 4 | |
| EN Rising Threshold | 0.8 | 1.1 | 1.4 | V | VIN=5V, TA=25°C | 4 | |
| EN Rising Threshold | 0.7 | 0.9 | 1.1 | V | VIN=3.3V, TA=25°C | 4 | |
| EN Leakage Current | -1 | 0.01 | 1 | µA | 4 | ||
| LX Leakage Current | -1 | 0.01 | 1 | µA | VEN=0V, VIN=VLX=5V | 4 | |
| Soft Start time | 0.5 | 0.8 | 1.1 | ms | 4 | ||
| Oscillation Frequency | fOSC | 1 | MHz | VOUT=100% | 4 | ||
| Oscillation Frequency | fOSC | 300 | kHz | VOUT=0V | 4 | ||
| UVLO Threshold | 2.3 | V | VIN Rising | 4 | |||
| OVP Threshold | 6.5 | V | 4 | ||||
| EN Hysteresis | 0.1 | V | 4 | ||||
| Thermal Shutdown Threshold | 155 | °C | 4 | ||||
| Thermal Shutdown Hysteresis | 25 | °C | 4 | ||||
| Junction-to-ambient thermal resistance | θJA | 220 | °C/W | 3 | |||
| Junction-to-case(top) thermal resistance | θJC | 62 | °C/W | 3 | |||
| Junction-to-case(top) characterization parameter | ψJC | 11 | °C/W | 3 |
CAD (KiCad official)
- Symbol:
TMI3411 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
tmi3411-etched.step/tmi3411-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tmi3411.step/tmi3411.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
tmi3411.step |
85 KB | You want the bare part, or you mark your own boards. |
tmi3411-etched.step |
1.1 MB | You want the part with TMI3411 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 306 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TMI datasheet (13 pp, sha256
250f10783988bd4b, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).