component
SK6019AD4-18
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Suntek Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, XDFN-4-EP(1x1). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+43@@ -0,0 +1,43 @@+# 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++- `SK6019AD4-18SK6019AD4-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)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Suntek datasheet](docs/sk6019ad4-18-datasheet.pdf) (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](docs/sk6019ad4-18-datasheet.pdf)
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