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LM8805SF5-3.3

Public Unreviewed

by Ray

HTC Korea TAEJIN Tech LM8805SF5 3 3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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PCB Footprint

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Contents

README

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LM8805SF5-3.3

HTC Korea TAEJIN Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L

LM8805SF5-3.3 from HTC Korea TAEJIN Tech, in a SOT-23-5L. 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 pin. Accepts up to 8V absolute max; recommended operating range ~2.5V to 6.5V for a 3.3V output. Bypass to GND with a ceramic (MLCC) input capacitor.
2 GND power_in Device ground reference. Typical quiescent ground current is 50µA (85µA max) over 0-600mA load; drops to <1µA when disabled.
3 EN input Active-high enable. VIH ≥ 2V turns the regulator on; VIL ≤ 0.4V shuts it down. Input bias current is ~100nA max at GND; when tied to VIN the enable draws ~0.01µA typical (1µA max).
4 BYP passive Bypass pin for the internal reference (fixed-output version). A 470pF capacitor to GND reduces reference/output noise. May be left open if low-noise operation is not required. On the adjustable version this pin serves as the ADJ feedback input (VADJ ≈ 1.27V).
5 VOUT power_out Regulated 3.3V output, ±1.5% accuracy at 1mA (±2% max over 1-600mA). Delivers up to 600mA continuous with typical current limit of 1300mA. Requires a low-ESR MLCC output capacitor (≥1µF, 10µF typical) for stability.

Key specifications

Parameter Value
Manufacturer HTC Korea TAEJIN Tech
Package SOT-23-5L
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • LM8805SF5-3.3
  • LM8805SF5-3.3F-3.3

The extractor listed these alongside LM8805SF5-3.3, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • LM8805SF5-ADJ
  • LM8805SF5-1.2
  • LM8805SF5-1.8
  • LM8805SF5-2.5
  • LM8805SF5-3.3F-1.2
  • LM8805SF5-3.3F-2.5

CAD (KiCad official)

  • Symbol: LM8805SF5-3.3
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm8805sf5-3-3.step 85 KB You want the bare part, or you mark your own boards.
lm8805sf5-3-3-etched.step 2.7 MB You want the part with LM8805SF5-3.3 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 627 faces against 102 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 (9 pp, sha256 3e4ba09d692958f8, 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