component
MST5450BTG
Public Made by Adomby adom
MST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. 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
markdownMST5450BTG
MST · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
MST5450BTG from MST, in a SOT-23-5. 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 | VIN | power_in | Input voltage pin with an operating range of 3 V to 45 V and 45 V transient capability; a 1 µF capacitor should be connected close to the chip between VIN and GND. |
| 2 | GND | power_in | Chip ground pin, to be connected with wide copper traces together with VIN. |
| 3 | EN | input | Enable pin that turns the LDO on when at least 1 V (VENH) and off when at or below 0.4 V (VENL); as an open-drain pin it must not be left floating, and it should be tied to VIN if unused. |
| 4 | NC | unconnected | No-connect pin (empty pin) with no internal function stated in the datasheet. |
| 5 | VOUT | power_out | Regulated output pin (fixed 1.8 V, 3.0 V, 3.3 V or 5.0 V variants) that requires a minimum 10 µF X5R or X7R ceramic output capacitor placed close to VOUT and GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MST |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 输入电压 | VIN | 3 | 45 | V | 4 | ||
| 静态电流 | IGND | 2.5 | 2.8 | 3.2 | uA | VIN=12V，No load | 4 |
| 输出电流 | IOUT_MAX | 350 | mA | 4 | |||
| EN高电平 | VENH | 1 | V | 开启 | 4 | ||
| EN低电平 | VENL | 0.4 | V | 关断 | 4 | ||
| VIN ~ GND 电压 | VIN~GND | -0.3 | 55 | V | 3 | ||
| VOUT ~ GND 电压 | VOUT~GND | -0.3 | 7 | V | 3 | ||
| VIN ~ VOUT 电压 | VIN~VOUT | -0.3 | 50 | V | 3 | ||
| EN ~ GND 电压 | EN~GND | -0.3 | 55 | V | 3 | ||
| 工作结温 | -40 | 125 | ℃ | 3 | |||
| 存储温度 | -40 | 150 | ℃ | 3 | |||
| 封装热阻 (SOT23-5) | 200 | ℃/W | 3 | ||||
| 封装最大允许功耗 (SOT23-5) | 600 | mW | 3 |
CAD (KiCad official)
- Symbol:
MST5450BTG - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
mst5450btg-etched.step/mst5450btg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mst5450btg.step/mst5450btg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MST datasheet (14 pp, sha256
4228e4a6a0aa11db, 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, 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).