component
MST5433BTS
Public Made by Adomby adom
MST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. 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
markdownMST5433BTS
MST · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
MST5433BTS from MST, 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 | GND | power_in | Chip ground pin; VIN and GND both need wide copper traces and the input and output capacitors should sit as close to the chip as possible. |
| 2 | VIN | power_in | Input pin with an operating range of 3 V to 45 V and a 45 V transient rating; a 1 uF capacitor is recommended between VIN and GND, and an electrolytic or at least 1 ohm series resistor is advised for inputs at or above 18 V. |
| 3 | VOUT | power_out | Fixed 3.3 V regulated output (±2%) rated for up to 350 mA, requiring a minimum 10 uF ceramic output capacitor (X5R or X7R) placed close to VOUT and GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MST |
| 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 |
|---|---|---|---|---|---|---|---|
| Input voltage | VIN | 3 | 45 | V | 4 | ||
| Quiescent current | IGND | 2.5 | 2.8 | 3.2 | uA | VIN=12V, No load | 4 |
| Output current | IOUT_MAX | 350 | mA | 4 | |||
| Output voltage accuracy (fixed 3.3V version) | VOUT | -2 | 2 | % | 1 | ||
| EN high level (turn on) | VENH | 1 | V | 开启 | 4 | ||
| EN low level (shut down) | VENL | 0.4 | V | 关断 | 4 | ||
| Voltage VIN to GND | VIN ~ GND | -0.3 | 55 | V | 3 | ||
| Voltage VOUT to GND | VOUT ~ GND | -0.3 | 7 | V | 3 | ||
| Voltage VIN to VOUT | VIN ~ VOUT | -0.3 | 50 | V | 3 | ||
| Voltage EN to GND | EN ~ GND | -0.3 | 55 | V | 3 | ||
| Operating junction temperature | -40 | 125 | ℃ | 3 | |||
| Storage temperature | -40 | 150 | ℃ | 3 | |||
| ESD human body model (HBM) | VESD | 4 | KV | 人体模式（HBM） | 3 | ||
| Maximum allowable power dissipation (SOT89-3) | 900 | mW | 3 | ||||
| Package thermal resistance (SOT89-3) | 130 | ℃/W | 3 |
CAD (KiCad official)
- Symbol:
MST5433BTS - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
mst5433bts-etched.step/mst5433bts-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mst5433bts.step/mst5433bts.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).