ZLDO1117QK50TC

@@ -0,0 +1,46 @@+# ZLDO1117QK50TC++**Diodes Incorporated** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252++ZLDO1117QK50TC from Diodes Incorporated, in a TO-252. 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 | GND | power_in | Ground reference pin for the fixed-output ZLDO1117Q-50 variant. On adjustable variants this same pin is the ADJ feedback node; on this 5.0V fixed-mode part it is tied internally to the reference divider and must be connected to system ground. |+| 2 | VOUT | power_out | Regulated 5.0V output of the LDO, capable of sourcing up to 1A. Requires a minimum 4.7µF capacitor to ground (0.05Ω ≤ ESR ≤ 0.5Ω) for stability; a larger output capacitor improves AC load response. The exposed tab is also VOUT. |+| 3 | VIN | power_in | Input supply pin, 2.7V to 18V. A large storage capacitor (0.05Ω ≤ ESR ≤ 0.5Ω) should be placed close to this pin so the input does not sag below the minimum dropout during load transients. VIN must be at least ~1.3V above VOUT for proper regulation (6.3V minimum for 5.0V output at full load). |+| TAB | VOUT | power_out | Exposed thermal tab electrically tied to VOUT. Solder to the PCB copper pour associated with the output net to conduct heat and improve power dissipation (θJA = 73 °C/W, θJC = 12 °C/W for TO252). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | TO-252 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++Same part, different packaging or reel option.++- `ZLDO1117QK50TC`+- `ZLDO1117QG50TA`++## CAD (KiCad official)++- Symbol: `ZLDO1117QK50TC`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Diodes Incorporated datasheet](docs/zldo1117qk50tc-datasheet.pdf) (14 pp, sha256 `52a05840bdb17cd6`, 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/zldo1117qk50tc-datasheet.pdf)

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