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STI3470

Public Made by Adom

by adom

TMI DC-DC Converters, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs sti3470: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
package.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json sti3470: specified limits as data (metadata.characteristics, 31 rows from the datasheet) · Ray
README.md sti3470: specified limits as data (metadata.characteristics, 31 rows from the datasheet) · Ray
sti3470-etched.fit.json sti3470: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
sti3470-etched.glb sti3470: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
sti3470-etched.step sti3470: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
sti3470.glb Publish 0.1.0 · Ray
sti3470.kicad_mod Publish 0.1.0 · Ray
sti3470.kicad_sym Publish 0.1.0 · Ray
sti3470.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
sti3470.step Publish 0.1.0 · Ray

STI3470

TMI · DC-DC Converters · SOT-23-6

STI3470 from TMI, in a SOT-23-6. 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 BS passive Bootstrap pin. A 0.1uF capacitor is connected between LX and BS to form a floating supply for the high-side switch driver. Absolute max 25V.
2 GND power_in Device ground reference. Connect to the ground plane with a low-impedance path.
3 FB input Adjustable version feedback input. Connect to the center of an external resistor divider from VOUT. Regulated to the internal 0.6V reference (0.588V/0.600V/0.612V).
4 EN input Enable input. Drive to logic-high (>=1.5V) to enable the IC; drive to logic-low (<=0.3V) to disable and enter micro-power shutdown. Absolute max 23V.
5 IN power_in Power supply input pin. Operating range 3.5V-18V; absolute max 23V. Bypass with a low-ESR ceramic capacitor (typically 22uF) close to the pin.
6 LX output Switching node. Internal high-side (120mOhm) and low-side (80mOhm) MOSFET common node. Connect to the external inductor; also references the BS bootstrap capacitor. Absolute max 23V.

Key specifications

Parameter Value
Manufacturer TMI
Package SOT-23-6
Category PMIC
Pins 6

Ordering variants

Same part, different packaging or reel option.

  • STI3470

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 Voltage Range 3.5 18 V 4
OVP Threshold 18.2 19 19.6 V 4
UVLO Threshold 3 3.4 V 4
Supply Current in Operation 0.5 0.8 mA VEN=2.0V, VFB=1.1V 4
Supply Current in Shutdown 1 10 μA VEN=0 or EN=GND 4
Regulated Feedback Voltage 0.588 0.6 0.612 V TA = 25°C, 3.5V ≤ VIN ≤ 18V 4
High-Side Switch Leakage Current 0 10 μA VEN=0V, VLX=0V 4
Upper Switch Current Limit 2.5 3.2 A Minimum Duty Cycle 4
Oscillation Frequency 540 600 660 kHz VFB=0.6V 4
Maximum Duty Cycle 95 % 4
Minimum On-Time 60 90 ns 4
Input Supply Voltage, EN -0.3 23 V 2
LX Voltages -0.3 23 V 2
FB Voltage -0.3 6 V 2
BS Voltage -0.6 25 V 2
Storage Temperature Range -65 150 °C 2
Junction Temperature 160 °C 2
Power Dissipation 600 mW 2
Lead Temperature (Soldering) 260 °C Soldering, 10s 2
Voltage Range IN 3.5 18 V 3
TJ Operating Junction Temperature Range TJ -40 125 °C 3
ESD Human Body Model, all pins VESD_HBM -2000 2000 V JEDEC JS-001 3
ESD Charge Device Model, all pins VESD_CDM -1000 1000 V JEDEC JS-001 3
High-Side Switch On-Resistance 120 mΩ 4
Low-Side Switch On-Resistance 80 mΩ 4
EN High Level Input Threshold 1.5 V 4
EN Low Level Input Threshold 0.3 V 4
Thermal Shutdown Threshold 160 °C Note 4 4
Thermal Shutdown Hysteresis 30 °C Note 4 4
Junction-to-ambient thermal resistance θJA 130 °C/W Note 3: JESD51-7, 4-layer PCB 3
Junction-to-case(top) thermal resistance θJC 60 °C/W Note 3: JESD51-7, 4-layer PCB 3

CAD (KiCad official)

  • Symbol: STI3470
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: sti3470-etched.step / sti3470-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sti3470.step / sti3470.glb are the bare package body.

Provenance

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

  • Datasheet: TMI datasheet (13 pp, sha256 2fb3b7dd78ed2071, 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).

Datasheet PDF