AMS1117CD-5.0
Public Unreviewedby Ray
UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Symbol & Footprint
Schematic Symbol
Open full view ↗PCB Footprint
Open full view ↗Datasheet
Open in new tab ↗Contents
README
markdownAMS1117CD-5.0
UMW · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2
AMS1117CD-5.0 from UMW, in a TO-252-2. 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 / return for the regulator. On the fixed-voltage AMS1117-5.0 this pin is the device ground reference (labeled GND/ADJ in the shared pinout table; on fixed versions the internal F1/F2 fuses connect it as GND). |
| 2 | VOUT | power_out | Regulated 5.0V output (1.176-1.224V per-cell trim; fixed 5.0V ±2% for the -5.0 variant). Requires a ≥22µF tantalum output capacitor for stability. Rated 1A continuous; current-limited at ~2.1-2.5A. On TO-252 this pin is electrically tied to the exposed tab. |
| 3 | VIN | power_in | Unregulated input supply. Absolute maximum 18V; recommended operating input 12V max. For a 5.0V output, VIN must be ≥ VOUT + VDROP (typ. 1.2V @ 1A). A 10µF input capacitor is recommended. |
| 4 | TAB | power_out | Exposed thermal tab on TO-252 (DPAK). Electrically connected to VOUT (pin 2) - solder to a copper pour tied to VOUT for heatsinking. Junction-to-ambient thermal resistance is 100°C/W for the TO-252 package. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | TO-252-2 |
| Category | PMIC |
| Pins | 4 |
Ordering variants
AMS1117CD-5.0AMS1117CD-5.0S-5.0
CAD (KiCad official)
- Symbol:
AMS1117CD-5.0 - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
ams1117cd-5-0.step |
119 KB | You want the bare part, or you mark your own boards. |
ams1117cd-5-0-etched.step |
1.7 MB | You want the part with AMS1117CD-5.0 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 465 faces against 83 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: UMW datasheet (13 pp, sha256
5ec219092aa45bd9, 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).