# L78L05CD13TR-MS

**MSKSEMI** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOP-8

L78L05CD13TR-MS from MSKSEMI, in a SOP-8. 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 | VOUT | power_out | Regulated output pin; for the L78L05CD13TR-MS the output is 5.0 V (4.8 V to 5.2 V) at VIN=10 V and IOUT=40 mA, with output current up to 100 mA. |
| 2 | GND | power_in | Ground pin (labeled 接地端 in the datasheet); no individual electrical limit is stated for this pin. |
| 3 | GND | power_in | Ground pin (labeled 接地端 in the datasheet); no individual electrical limit is stated for this pin. |
| 4 | NC | unconnected | No-connect pin (labeled 空脚 in the datasheet); no function is defined for this pin. |
| 5 | NC | unconnected | No-connect pin (labeled 空脚 in the datasheet); no function is defined for this pin. |
| 6 | GND | power_in | Ground pin (labeled 接地端 in the datasheet); no individual electrical limit is stated for this pin. |
| 7 | GND | power_in | Ground pin (labeled 接地端 in the datasheet); no individual electrical limit is stated for this pin. |
| 8 | VIN | power_in | Input pin; the product model table gives a maximum input voltage of 30 V, and the absolute maximum rating for VIN is 32 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## 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 | VOUT | 4.8 | 5 | 5.2 | V | VIN=10V, IOUT=40mA | 3 |
| Load regulation | △VOUT |  | 10 | 50 | mV | VIN=10V, 1mA≤IOUT≤40mA | 3 |
| Load regulation | △VOUT |  | 15 | 75 | mV | VIN=10V, 1mA≤IOUT≤100mA | 3 |
| Input regulation (line regulation) | △VOUT |  | 20 | 80 | mV | 8.5V≤VIN≤20V, IOUT=40mA | 3 |
| Quiescent current | IQ |  | 3 | 5 | mA | VIN=10V, IOUT=40mA | 3 |
| Quiescent current change | ΔIQ |  | 0.2 | 1 | mA | 8.5V≤VIN≤36V, IOUT=0mA | 3 |
| Quiescent current change | ΔIQ |  | 0.02 | 0.1 | mA | VIN=10V, 1mA≤IOUT≤40mA | 3 |
| Minimum input voltage | VIN(MIN) |  | 8 | 8.5 | V |  | 3 |
| Maximum input voltage | VIN |  |  | 32 | V |  | 3 |
| Operating temperature | Tw | -25 |  | 85 | ℃ |  | 3 |
| Operating junction temperature | TJ |  |  | 125 | ℃ |  | 3 |
| Storage temperature | Tc | -65 |  | 150 | ℃ |  | 3 |

## CAD (KiCad official)

- Symbol: `L78L05CD13TR-MS`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `l78l05cd13tr-ms-etched.step` / `l78l05cd13tr-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l78l05cd13tr-ms.step` / `l78l05cd13tr-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602938585838735360) (7 pp, sha256 `2840b6ffb40e5192`, retrieved 2026-10-18, 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/l78l05cd13tr-ms-datasheet.pdf)