component

ZD1117ILTR18

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by Ray

Zetta Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

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ZD1117ILTR18

Zetta · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3

ZD1117ILTR18 from Zetta, in a SOT-223-3. 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 / Adjust pin. On fixed-voltage variants (ZD1117-1.8V here) this pin is the device ground reference. On the -ADJ variant the same pin becomes the feedback/adjust input tied to the external resistor divider (1.25V reference, IAdj ≈ 55µA typ, 120µA max).
2 VOUT power_out Regulated output voltage. For ZD1117ILTR18 this is 1.8V ±2% (1.764V-1.836V) at up to 1A load with Vin ≥ 3.3V. Requires a 10µF tantalum (or equivalent MLCC/electrolytic) bypass capacitor to ground for stability. The SOT-223 tab is internally connected to this pin.
3 VIN power_in Unregulated supply voltage input. Recommended operating range up to 16V (absolute max 18V; 20V for the 12V variant). For ZD1117-1.8V operation, Vin ≥ 3.3V (dropout ~1.3V @ 1A). A 10µF tantalum bypass capacitor to ground is recommended.

Key specifications

Parameter Value
Manufacturer Zetta
Package SOT-223-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • ZD1117ILTR18
  • ZD1117ILTR12
  • ZD1117ILTR15
  • ZD1117ILTR25
  • ZD1117ILTR33
  • ZD1117ILTR50
  • ZD1117ILTR120
  • ZD1117ILTRAD
  • ZD1117ILTR18IOTR18
  • ZD1117ILTR18IOTR12
  • ZD1117ILTR18IOTR15
  • ZD1117ILTR18IOTR25
  • ZD1117ILTR18IOTR33
  • ZD1117ILTR18IOTR50
  • ZD1117ILTR18IOTR120
  • ZD1117ILTR18IOTRAD

CAD (KiCad official)

  • Symbol: ZD1117ILTR18
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223-3 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Zetta datasheet (7 pp, sha256 39e7a6cfa037d97e, 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