TMI3113 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	EN	input	Chip enable pin. Drive above EN rising threshold (typ 1.1V @VIN=5V, 0.9V @VIN=3.3V) to turn the part on; drive below EN falling threshold (typ 1.0V @VIN=5V, 0.9V @VIN=3.3V) to turn it off. Do not leave floating. EN leakage <=1uA. Absolute max 7V.
2	GND	power_in	Device ground return pin. All internal references and MOSFET source (low-side) currents return through this pin.
3	LX	output	Power switch (inductor) node. Connects to the drains of the internal P-channel high-side and N-channel low-side MOSFETs. Connect the external inductor here. Absolute max -0.3V to 7V (transient -3.5V to 8.5V for <5ns). PMOS RDS(on) ~95mOhm, NMOS RDS(on) ~50mOhm, peak current limit ~3.5A (typ).
4	VIN	power_in	Analog and power supply input pin. Operating range 2.7V to 5.5V; input OVP threshold typ 6.1V; input UVLO typ 2.5V rising with ~500mV hysteresis; absolute max 7V. Bypass with a low-ESR ceramic capacitor (22uF X5R/X7R typical) close to the pin.
5	PG	output	Power-Good open-drain output (TMI3113 only). Goes high-impedance when the output voltage rises above ~91% of the regulated nominal voltage and is pulled low when the output falls below the threshold or when EN is pulled low. Sink capability 2mA max. Requires an external pull-up resistor.
6	FB	input	Output voltage feedback pin. Internal reference is 0.600V (typ); an external resistor divider from VOUT programs the output per VOUT = 0.6 x (1 + R1/R2). In PFM/no-load operation FB regulates slightly above 0.6V (typ 0.609V). Absolute max 7V.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

TMI3113TCBXXX
TMI3113TCCXXX

CAD (KiCad official)

Symbol: TMI3113
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tmi3113.step`	97 KB	You want the bare part, or you mark your own boards.
`tmi3113-etched.step`	1.3 MB	You want the part with `TMI3113` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 345 faces against 117 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 (16 pp, sha256 8ab8c528a0220703, 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