component
MG7550T3
Public Made by Adomby adom
Megain Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3. 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
markdownMG7550T3
Megain · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3
MG7550T3 from Megain, in a SOT-23-3. 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 | Ground pin (接地端); the datasheet gives no further electrical limit for this pin. |
| 2 | VOUT | power_out | Regulated output voltage pin; for the MG7550T3 the ordering table gives a 5.0V output, with a maximum output current of 170mA. |
| 3 | VIN | power_in | Input voltage pin; recommended operating range is 5V to 30V, with an absolute maximum of -0.3V to +33V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Megain |
| Package | SOT-23-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Output voltage accuracy | ΔVOUT | -2 | 2 | % | TJ = 25⁰C | 3 | |
| Line regulation | ΔVLINE | 2 | 50 | mV | VIN = 'VOUT+2V' to 30V, if VOUT ≥ 3V | 3 | |
| Load regulation | ΔVLOAD | 40 | 75 | mV | IOUT = 1mA ~ 150mA | 3 | |
| Dropout voltage | VDROP | 600 | mV | IOUT = 100mA | 3 | ||
| Dropout voltage | VDROP | 1000 | mV | IOUT = 150mA | 3 | ||
| Quiescent current | IQ | 1.2 | 2.5 | uA | IOUT = 0mA | 3 | |
| Current limit | ICL | 190 | 220 | mA | 3 | ||
| Power supply rejection ratio | PSRR | 70 | dB | IOUT = 10mA, f = 1KHz | 3 | ||
| Thermal shutdown | TSD | 150 | ⁰C | 3 | |||
| Thermal shutdown hysteresis | TSDHY | 20 | ⁰C | 3 | |||
| Input voltage | VIN | 5 | 30 | V | 3 | ||
| Operating temperature | TA | -40 | 85 | ⁰C | 3 | ||
| Junction temperature range | TJ | -40 | 125 | ⁰C | 3 | ||
| Input voltage | VIN | -0.3 | 33 | V | 3 | ||
| Junction temperature | TJ | 150 | ⁰C | 3 | |||
| Power dissipation | PD | 0.29 | W | SOT23-3 | 3 | ||
| Thermal resistance, junction-to-ambient | RθJA | 350 | ⁰C/W | SOT23-3; JEDEC 51-7, TA = 25°C, high-effective-thermal-conductivity four-layer test board | 3 | ||
| Soldering temperature | 300 | ⁰C | Time ≤ 10 s | 3 | |||
| Storage temperature | Tstg | -65 | 150 | ⁰C | 3 | ||
| ESD HBM | ESD | -4500 | 4500 | V | Human body model (HBM) | 3 |
CAD (KiCad official)
- Symbol:
MG7550T3 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
mg7550t3-etched.step/mg7550t3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mg7550t3.step/mg7550t3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Megain datasheet (7 pp, sha256
8b1486c65e280da0, 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).