component
78M09-MS
Public Made by Adomby adom
MSKSEMI Linear Voltage Regulators (LDO), TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown78M09-MS
MSKSEMI · Linear Voltage Regulators (LDO) · TO-252
78M09-MS from MSKSEMI, in a TO-252. 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 | IN | power_in | Unregulated input voltage pin, with absolute maximum input voltage of 25 V and specified regulation for Vi between 11.5 V and 24 V. |
| 2 | GND | power_in | Ground reference pin for the regulator. |
| 3 | OUT | power_out | Regulated 9 V output pin, rated for a maximum output current IOM of 0.5 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | TO-252 |
| Category | Power Supply Chip |
| 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 (25℃) | Vo | 8.65 | 9 | 9.35 | V | 11.5≤Vi≤24V, Io=5mA-350mA, Po≤15W | 2 |
| Output Voltage (0-125℃) | Vo | 8.55 | 9 | 9.45 | V | 11.5≤Vi≤24V, Io=5mA-350mA, Po≤15W | 2 |
| Input Voltage | Vi | 25 | V | 2 | |||
| Operating Junction Temperature Range | TOPR | -20 | 125 | ℃ | 2 | ||
| Storage Temperature Range | TSTG | -65 | 150 | ℃ | 2 | ||
| Continuous Total Dissipation | PD | 1.25 | W | Ta = 25 ℃ | 2 | ||
| Load Regulation (Io=5mA-500mA) | ΔVo | 20 | 180 | mV | Io=5mA-500mA | 2 | |
| Load Regulation (Io=5mA-200mA) | ΔVo | 10 | 90 | mV | Io=5mA-200mA | 2 | |
| Line Regulation (11.5V≤Vi≤25V) | ΔVo | 6 | 100 | mV | 11.5V≤Vi≤25V, Io=200mA | 2 | |
| Line Regulation (12V≤Vi≤25V) | ΔVo | 2 | 50 | mV | 12V≤Vi≤25V, Io=200mA | 2 | |
| Quiescent Current | Iq | 4.6 | 6 | mA | 2 | ||
| Quiescent Current Change (line) | ΔIq | 0.8 | mA | 11.5V≤Vi≤25V, Io=200mA, 0-125℃ | 2 | ||
| Quiescent Current Change (load) | ΔIq | 0.5 | mA | 5mA≤IO≤350mA, 0-125℃ | 2 | ||
| Ripple Rejection | RR | 56 | 80 | dB | 13≤Vi≤23V, f=120Hz, Io=300mA, 0-125℃ | 2 | |
| Output Noise Voltage | VN | 60 | μV | 10Hz≤f≤100KHz, 25℃ | 2 | ||
| Dropout Voltage | Vd | 2 | V | Io=350mA, 25℃ | 2 | ||
| Short Circuit Current | Isc | 250 | mA | Vi=16V, 25℃ | 2 | ||
| Peak Current | Ipk | 0.5 | A | 25℃ | 2 |
CAD (KiCad official)
- Symbol:
78M09-MS - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files:
78m09-ms-etched.step/78m09-ms-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);78m09-ms.step/78m09-ms.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (5 pp, sha256
77f334a90784c22e, retrieved 2026-11-05, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).