LM2596DP-5.0 from HTC Korea TAEJIN Tech, in a SOP-8-EP. 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	Positive input supply for the LM2596 step-down switching regulator. Absolute maximum 45V, operational up to 40V. Requires a suitable input bypass capacitor (typ. 470 uF, 50V) close to the pin to minimize voltage transients and supply switching currents.
2	VOUT	output	Emitter of the internal 3A switch transistor (switch node). Saturation voltage Vsat is typically 1.16 V at 3A. Connects to the external catch diode and buck inductor. PCB area at this node should be minimized to reduce switching noise coupling.
3	GND	power_in	Circuit ground pin. Exposed pad of the SOP-8PP package must also be externally connected to GND for thermal and electrical grounding.
4	FEEDBACK	input	Senses the regulated output voltage to close the feedback loop. In the fixed 5.0V version, the internal resistor divider (R2, R1) drives the internal error amplifier's non-inverting input; connect this pin directly to the +5.0V output rail.
5	ON/OFF	input	TTL-compatible shutdown input. Threshold is typically 1.3 V; driving above threshold (up to +Vin) shuts the regulator off, dropping supply current to ~80 uA standby. Pulling below 1.3 V or leaving open enables the regulator (on state).
6	NC	unconnected	No connect. Leave unconnected.
7	NC	unconnected	No connect. Leave unconnected.
8	NC	unconnected	No connect. Leave unconnected.
9	EP	power_in	Exposed thermal pad on the underside of the SOP8-PP package. Must be externally connected to GND for both thermal dissipation and electrical grounding.

Key specifications

Parameter	Value
Manufacturer	HTC Korea TAEJIN Tech
Package	SOP-8-EP
Category	PMIC
Pins	9

Ordering variants

Same part, different packaging or reel option.

LM2596DP-5.0
LM2596T-5.0
LM2596R-5.0

The extractor listed these alongside LM2596DP-5.0, but they are different parts with different electrical characteristics. Do not order them as substitutes.

LM2596DP-3.3
LM2596DP-12
LM2596DP-ADJ
LM2596T-3.3
LM2596T-12
LM2596T-ADJ
LM2596R-3.3
LM2596R-12
LM2596R-ADJ

CAD (KiCad official)

Symbol: LM2596DP-5.0
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8-EP (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lm2596dp-5-0.step`	122 KB	You want the bare part, or you mark your own boards.
`lm2596dp-5-0-etched.step`	2.3 MB	You want the part with `LM2596DP-5.0` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 567 faces against 147 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: HTC Korea TAEJIN Tech datasheet (10 pp, sha256 3a288026e0f41aae, 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

LM2596DP-5.0

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

README