# 78L05 TO92

**KTP** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-92

78L05 TO92 from KTP, in a TO-92. 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 | OUT | power_out | Regulated output of the 5 V regulator, with output voltage specified at 4.8 V min, 5 V typ and 5.2 V max over IO = 1 mA to 40 mA. |
| 2 | GND | power_in | Ground (common) reference pin for the regulator. |
| 3 | IN | power_in | Unregulated input voltage pin; the datasheet gives a maximum input voltage of 20 V and tests the device at VI = 7 V to 20 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KTP |
| Package | TO-92 |
| 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 |
|---|---|---|---|---|---|---|---|
| Output voltage | Vo | 4.8 | 5 | 5.2 | V | IO=1mA to 40mA | 1 |
| Output voltage | Vo | 4.75 | 5 | 5.25 | V | 0 to 125℃ | 1 |
| Line regulation | ΔVo |  | 32 | 150 | mV | VI=7V to 20V | 1 |
| Line regulation | ΔVo |  | 26 | 100 | mV | VI=8V to 20V | 1 |
| Load regulation | ΔVo |  | 15 | 60 | mV | IO=1mA to 100mA | 1 |
| Load regulation | ΔVo |  | 8 | 30 | mV | IO=1mA to 40mA | 1 |
| Quiescent current | IQ |  | 3.8 | 6 | mA | Tj=25℃ | 1 |
| Quiescent current | IQ |  |  | 5.5 | mA | 0 to 125℃ | 1 |
| Quiescent current change | ΔIQ |  |  | 1.5 | mA | VI=8V to 20V | 1 |
| Quiescent current change | ΔIQ |  |  | 0.1 | mA | IO=1mA to 40mA | 1 |
| Dropout voltage | VD |  | 1.7 |  | V | Tj=25℃ | 1 |
| Ripple rejection | RR | 41 | 49 |  | dB | VI=8V to 18V, f=120Hz, 25℃ | 1 |
| Output noise voltage | VN |  | 42 |  | uV | f=10Hz-100Hz, 25℃ | 1 |
| Input voltage | VIN |  |  | 20 | V |  | 1 |
| Maximum power dissipation | PD |  |  | 750 | mW |  | 1 |
| Thermal resistance, junction to ambient | θJA |  |  | 150 | ℃/W |  | 1 |
| Operating temperature | Tc | 0 |  | 125 | ℃ |  | 1 |
| Storage temperature | Tstg | -65 |  | 150 | ℃ |  | 1 |
| Electrostatic discharge protection | VESD |  |  | 2.7 | KV |  | 1 |

## CAD (KiCad official)

- Symbol: `78L05 TO92`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files: `78l05-to92-etched.step` / `78l05-to92-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `78l05-to92.step` / `78l05-to92.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KTP datasheet](docs/78l05-to92-datasheet.pdf) (2 pp, sha256 `06336f46aa0f7577`, retrieved 2026-10-19, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/78l05-to92-datasheet.pdf)