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SK6019AD4-18

Public Made by Adom

by adom

Suntek Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, XDFN-4-EP(1x1). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentpmicsk6019ad4-18
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3D Model

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Symbol & Footprint

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PCB Footprint

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Datasheet

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Contents

README

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SK6019AD4-18

Suntek · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · XDFN-4-EP(1x1)

SK6019AD4-18 from Suntek, in a XDFN-4-EP(1x1). 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 VOUT power_out Regulated LDO output. Fixed 1.8V for the -18 suffix; recommended 1µF output capacitor to GND. Delivers up to 750mA at VIN-VOUT=0.5V; typical dropout 110mV at IOUT=200mA. Fast active-discharge network pulls this pin down when EN is low.
2 GND power_in Device ground. Shared with the exposed thermal pad, which must also be tied to GND for proper thermal dissipation (PDMAX = 0.3W in DFN1x1-4L).
3 EN input Enable input, active high; do not float. VENH ≥ 1.2V enables the regulator, VENL ≤ 0.4V shuts it down (<1µA shut-down current). Input current is <1µA over 0 to 5.5V.
4 VIN power_in Unregulated supply input, 2.5V to 6.5V recommended operating range (absolute max 8V). Bypass with 1µF ceramic capacitor to GND close to the pin.

Key specifications

Parameter Value
Manufacturer Suntek
Package XDFN-4-EP(1x1)
Category PMIC
Pins 4

Ordering variants

Same part, different packaging or reel option.

  • SK6019AD4-XX

CAD (KiCad official)

  • Symbol: SK6019AD4-18
  • Footprint: Package_DFN_QFN:OnSemi_XDFN4-1EP_1.0x1.0mm_EP0.52x0.52mm
  • 3D model: XDFN-4-EP(1x1) (KiCad packages3D, STEP)
  • 3D model files: sk6019ad4-18-etched.step / sk6019ad4-18-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sk6019ad4-18.step / sk6019ad4-18.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sk6019ad4-18.step 144 KB You want the bare part, or you mark your own boards.
sk6019ad4-18-etched.step 2.1 MB You want the part with SK6019AD4-18 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 510 faces against 41 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: Suntek datasheet (8 pp, sha256 151d8627fd2b92d5, 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