TPAP2204K-3.3TRG1 from TECH PUBLIC, 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	VIN	power_in	Input supply voltage. Operating range 2V to 36V (recommended 3.5V to 36V); absolute maximum 40V to GND. Bypass with a 1µF ceramic capacitor close to the pin.
2	GND	power_in	Ground return for the regulator. Serves as the reference for VIN, EN, and VOUT.
3	EN	input	Enable control input. Drive above VIH (max 2V rising threshold) to enable the regulator; drive below VIL (0.6V falling) to shut down. Typical input current 10nA at VEN=36V (max 100nA); do not leave floating.
4	NC	unconnected	No internal connection. Can be left floating or tied to GND for mechanical stability.
5	VOUT	power_out	Regulated output voltage (3.3V fixed, ±2% accuracy). Delivers up to 200mA output current with 300mA typical current limit. Requires an output capacitor with effective capacitance ≥1µF (ceramic or tantalum) for stability.

Key specifications

Parameter	Value
Manufacturer	TECH PUBLIC
Package	SOT-23-5
Category	PMIC
Pins	5

Ordering variants

Same part, different packaging or reel option.

TPAP2204K-3.3TRG1

CAD (KiCad official)

Symbol: TPAP2204K-3.3TRG1
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

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

Datasheet: TECH PUBLIC datasheet (9 pp, sha256 d27d01c146d95f38, 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