component
ld1117ag-adj-a
Public Unreviewedby Ray
UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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markdownLD1117AG-ADJ-A
UTC Unisonic Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223
LD1117AG-ADJ-A from UTC Unisonic Tech, in a SOT-223. 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 | ADJ | input | Adjust pin. Feedback input for setting output voltage via external resistor divider (R1 tied between OUT and ADJ, R2 tied between ADJ and GND). Reference voltage VREF = 1.25V (typ) sits between OUT and ADJ. Adjust-pin current IADJ = 60 uA typ (120 uA max). |
| 2 | VOUT | power_out | Regulated output. Delivers up to 1.0A (LD1117A). Requires an output capacitor of >= 10 uF (MLCC supported). For SOT-223, the exposed tab is electrically tied to this pin. |
| 3 | VIN | power_in | Unregulated input supply. Absolute max 18 V DC; recommended operating input up to 15 V. Must sit at least ~1.1-1.3 V above VOUT (dropout at 1 A). Requires >= 10 uF input capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC Unisonic Tech |
| Package | SOT-223 |
| Category | PMIC |
| Pins | 3 |
Ordering variants
LD1117AG-ADJ-AAA3LD1117AG-ADJ-AAB3LD1117AG-ADJ-ATA3LD1117AG-ADJ-ATF3LD1117AG-ADJ-ATN3LD1117AG-ADJ-ATNDLD1117AG-ADJ-AT2QLD1117AG-ADJ-ATQ2LD1117AG-ADJ-ATQ3LD1117AG-ADJ-AS08
CAD (KiCad official)
- Symbol:
LD1117AG-ADJ-A - Footprint:
Package_TO_SOT_SMD:SOT-223-3_TabPin2 - 3D model: SOT-223 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UTC Unisonic Tech datasheet (None pp, sha256
f7f26a117cb07dc2, retrieved 2026-08-17, tier: manufacturer) - 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).