# ZD1117ISTR33

**Zetta** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

ZD1117ISTR33 from Zetta, in a SOT-89-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Vss/ADJ | power_in | Ground pin for fixed-output versions, and the adjust pin for the ZD1117-ADJ, whose adjust pin current is 55-120 uA (typ-max) with a 0.2-10 uA change over load. |
| 2 | Vout | power_out | Regulated output voltage; maximum output current is 1A, with 1.3 V dropout at 1A load. |
| 3 | Vin | power_in | Supply voltage input; absolute maximum input is 18V and recommended input range is up to 16V (20V for ZD1117-12V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Zetta |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Max Input Voltage |  |  |  | 18 | V |  | 3 |
| Ambient Temperature (Ta) |  | -40 |  | 85 | C |  | 3 |
| Storage Temperature (Ts) |  | -40 |  | 150 | C |  | 3 |
| Max Operating Junction Temperature (Tj) |  |  |  | 150 | C |  | 3 |
| Lead Temperature |  |  |  | 260 | C | 10 s | 3 |
| Input Voltage Range |  |  |  | 16 | V |  | 3 |
| Operating Junction Temperature (Tj) |  | -40 |  | 125 | C |  | 3 |
| Output Voltage (ZD1117-3.3V) | Vout | 3.234 | 3.3 | 3.366 | V | 0≤Iout≤1A , Vin=5.3V | 4 |
| Line Regulation (ZD1117-3.3V) | ΔVout |  | 0.1 | 0.2 | %/V | Iout=10mA, 4.8V≤Vin≤16V | 4 |
| Load Regulation (ZD1117-3.3V) | ΔVout |  | 10 | 30 | mV | Vin=4.8V,10mA≤Iout≤1A | 4 |
| Dropout Voltage | Vdrop |  | 1.23 | 1.3 | V | Iout=100mA | 5 |
| Dropout Voltage | Vdrop |  | 1.3 | 1.5 | V | Iout=1A | 5 |
| Current Limit | Ilimit |  | 1 |  | A | Vin-Vout=2V, Tj=25°C | 5 |
| Quiescent Current (ZD1117-3.3V) | Iq |  | 2 | 5 | mA | ZD1117-3.3V, Vin =12V | 5 |
| Temperature Coefficient | ΔV/ΔT | -100 |  | 100 | ppm |  | 5 |

## CAD (KiCad official)

- Symbol: `ZD1117ISTR33`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `zd1117istr33-etched.step` / `zd1117istr33-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `zd1117istr33.step` / `zd1117istr33.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Zetta datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603065265814974464) (9 pp, sha256 `69324c98cfc0544d`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/zd1117istr33-datasheet.pdf)