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sti3472

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by Ray

TMI DC-DC Converters, SOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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README

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STI3472

TMI · DC-DC Converters · SOT-23-6

STI3472 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 GND power_in Ground pin. Analog and power ground return for the converter; connect to a large copper area to improve thermal performance.
2 LX power_out Switching node. Connected to the drains of the internal high-side and low-side power MOSFETs; drives the external inductor. Absolute max rating -0.3V to 20V.
3 IN power_in Power supply input pin. Recommended operating range 3.5V to 18V (absolute max 20V). Bypass with a ceramic capacitor placed close to this pin. OVP threshold typ. 19V; UVLO threshold typ. 3.0V.
4 FB input Output voltage feedback input to the internal error amplifier. Connect to the center point of an external resistor divider from VOUT; regulated to the internal 0.8V reference (0.784V/0.8V/0.816V). Absolute max -0.3V to 6V.
5 EN input Enable input. Drive to logic-high (V_IH ≥ 1.50V) to enable the IC; drive to logic-low (V_IL ≤ 0.30V) to disable and enter micro-power shutdown. Must not be left floating. Absolute max -0.3V to 20V.
6 BS passive Bootstrap pin (BST). Connect a capacitor (typ. 100nF) between LX and BS to form a floating supply for the high-side N-MOSFET gate driver. Absolute max -0.6V to 25V.

Key specifications

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

CAD (KiCad official)

  • Symbol: STI3472
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: TMI datasheet (None pp, sha256 4165c9717fc8132b, 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

Symbol & Footprint

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PCB Footprint

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Datasheet

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