component
ME2108B50PG
Public Made by Adomby adom
MICRONE DC-DC Converters, 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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Contents
README
markdownME2108B50PG
MICRONE · DC-DC Converters · SOT-89-3
ME2108B50PG from MICRONE, 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 | Vss | power_in | Ground pin; needs a sufficient ground connection, otherwise the IC's internal zero level varies with the switching current and operation may become unstable. |
| 2 | Vout | power_in | Output voltage monitor pin that also serves as the IC internal power supply; the external capacitor should be connected with minimum wiring to it. |
| 3 | Ext | output | Drive output for the external switch transistor, with absolute maximum pin voltage -0.3V to Vout+0.3V and pin current of ±30mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MICRONE |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Oscillation Start-up Voltage | Vstart | 0.8 | 0.9 | V | IOUT=1mA, VIN: 0→2V | 7 | |
| Input Voltage | VIN | 6.5 | V | Vdd input voltage | 6 | ||
| Lx Pin voltage | VLX | 6.5 | V | 6 | |||
| EXT Pin voltage | VEXT | -0.3 | V | -0.3~Vout+0.3 | 6 | ||
| Lx Pin current | ILX | 600 | mA | 6 | |||
| EXT Pin current | IEXT | -30 | 30 | mA | ±30 | 6 | |
| Continuous Total Power Dissipation SOT89-3 | Pd | 1.25 | W | SOT89-3 | 6 | ||
| Operating Ambient Temperature | TOpr | -25 | 85 | ℃ | 6 | ||
| Maximum junction temperature | TJ | -40 | 150 | ℃ | 6 | ||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 6 | ||
| Soldering temperature | Tsolder | 260 | ℃ | 10s | 6 | ||
| Oscillation Hold Voltage | Vhold | 0.45 | V | IOUT=1mA, VIN: 2→0V | 7 | ||
| Supply Current 1 | IDD1 | 80 | µA | No external component, Vout=Vout×0.95 | 7 | ||
| Supply Current 2 | IDD2 | 12 | µA | Vout=Vout+0.5V | 7 | ||
| Lx Switching Current | ILX | 360 | mA | VLX=0.4V, Vout=Vout×0.95 | 7 | ||
| Lx Leakage Current | ILXleak | 0.5 | µA | Vout=VLX=6V | 7 | ||
| Oscillation Frequency | Fosc | 180 | kHz | Vout=set Vout×0.95 | 7 | ||
| Duty Ratio | Maxdty | 84 | % | on(VLX“L”)side | 7 | ||
| Efficiency | EFFI | 85 | % | 7 | |||
| Thermal resistance junction to air SOT89-3 | θJA | 100 | ℃/W | SOT89-3 | 6 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | ppa | body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of Nanjing Micro | 17 |
CAD (KiCad official)
- Symbol:
ME2108B50PG - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
me2108b50pg-etched.step/me2108b50pg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);me2108b50pg.step/me2108b50pg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MICRONE datasheet (17 pp, sha256
9945b3a703ae45f0, retrieved 2026-10-31, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).