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TMI3408C

Public Made by Adom

by adom

TMI DC-DC Converters, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)tmi3408cfactory-2.0.0extractor-text
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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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TMI3408C

TMI · DC-DC Converters · SOT-23-5

TMI3408C from TMI, 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 EN input Chip enable pin: drive EN above the EN high threshold to turn the part on and below the EN low threshold to turn it off, and do not leave it floating.
2 GND power_in Ground pin.
3 LX output Power switch output and the switch node connection to the inductor.
4 VIN power_in Power supply input (2.5V to 5.5V recommended operating range), which must be closely decoupled to GND with a 4.7µF or greater ceramic capacitor.
5 FB input Output voltage feedback pin used to set the regulated output voltage through the external resistor divider.

Key specifications

Parameter Value
Manufacturer TMI
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
Input Supply Voltages VIN -0.3 6.5 V 2
LX Voltages VLX -0.3 6.5 V 2
LX Voltage (<10ns transient) VLX -2.5 7 V <10ns transient 2
LX Voltage (<5ns transient) VLX -3.5 7.5 V <5ns transient 2
EN, FB Voltage VEN, VFB -0.3 6.5 V 2
Storage Temperature Range TSTG -65 150 °C 2
Junction Temperature TJ -40 150 °C Note 2 2
Power Dissipation PD 600 mW 2
Lead Temperature Soldering 260 °C 10 Sec 2
ESD Human Body Model for all pins VESD_HBM -2000 2000 V JEDEC JS-001 3
ESD Charge Device Model for all pins VESD_CDM -1000 1000 V JEDEC JS-001 3
Voltage Range IN VIN 2.5 5.5 V 3
TJ Operating Junction Temperature Range TJ -40 125 °C 3
Input Voltage Range VIN 2.5 5.5 V 4
Quiescent Current IQ 50 100 µA VEN=2.0V, IOUT=0, VFB=VREF*105% 4
Shutdown Current ISD 0.1 10 µA VEN=0V 4
Regulated Feedback Voltage VFB 0.588 0.6 0.612 V TA = 25°C 4
Regulated Feedback Voltage VFB 0.586 0.6 0.613 V TA = 0°C ≤ TA ≤ 85°C 4
Regulated Feedback Voltage VFB 0.585 0.6 0.615 V TA = -40°C ≤ TA ≤ 85°C 4
Reference Voltage Line Regulation 0.04 0.4 %/V VIN = 2.5V to 6.0V 4
Output Voltage Line Regulation 0.04 0.4 % VIN = 2.5V to 6.0V 4
EN Rising Threshold VEN_R 0.8 1.1 1.4 V VIN=5V, TA=25°C 4
EN Rising Threshold VEN_R 0.6 0.9 1.2 V VIN=3.3V, TA=25°C 4
EN Leakage Current IEN -1 0.01 1 µA 4
LX Leakage Current ILX -1 0.01 1 µA VEN=0V, VIN=VLX=5V 4
Output Voltage Load Regulation 0.5 % 4
OVP Threshold VOVP 6 V 4
UVLO Threshold VUVLO 2.1 V 4
Oscillation Frequency fOSC 1.5 MHz VOUT=100% 4
Oscillation Frequency fOSC 400 kHz VOUT=0V 4
On Resistance of PMOS RDS(ON)P 0.2 Ω ILX=100mA 4
On Resistance of NMOS RDS(ON)N 0.18 Ω ILX=-100mA 4
Peak Current Limit ILIM 1.5 A VIN=5V, VOUT=1.2V, L=4.7μH/2A 4
EN Hysteresis 0.13 V 4
Thermal Shutdown Threshold TSD 150 °C Note 4: guaranteed by design 4
Thermal Shutdown Hysteresis 25 °C Note 4: guaranteed by design 4
Junction-to-ambient thermal resistance θJA 200 °C/W JESD51-7, 4-layer PCB 3
Junction-to-case thermal resistance θJC 65 °C/W 3

CAD (KiCad official)

  • Symbol: TMI3408C
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: tmi3408c-etched.step / tmi3408c-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tmi3408c.step / tmi3408c.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: TMI datasheet (11 pp, sha256 1de226ff8ac0e913, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF