component
ME2139FM5G
Public Made by Adomby adom
MICRONE DC-DC Converters, 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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Contents
README
markdownME2139FM5G
MICRONE · DC-DC Converters · SOT-23-5
ME2139FM5G from MICRONE, 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 | FB | input | Feedback voltage input that sets the output voltage through external resistors R1 and R2, with a feedback reference VFB of 1.225 V min, 1.25 V typ and 1.275 V max. |
| 2 | VDD | power_in | IC supply pin with an absolute maximum range of -0.3 V to 6.5 V, where the datasheet recommends 2.5 V ≦ VDD < 6 V for stable output voltage and oscillation frequency (start-up is possible from 0.9 V). |
| 3 | CE | input | Shutdown pin that must be held at or above 0.75 V min to run oscillation and at or below 0.3 V (VOUT ≥ 1.5 V) or 0.2 V (VOUT < 1.5 V) to stop it, with an absolute range of -0.3 V to VDD+0.3 V. |
| 4 | GND | power_in | Ground reference pin for the IC. |
| 5 | EXT | output | Drives the gate of the external low-ON-resistance N-channel power MOSFET, with an absolute range of -0.3 V to VDD+0.3 V and typical output currents of -25 mA (source, IEXTH) and 40 mA (sink, IEXTL). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MICRONE |
| 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 |
|---|---|---|---|---|---|---|---|
| VDD Pin Voltage | VDD | -0.3 | 6.5 | V | 4 | ||
| EXT Pin Voltage | EXT | -0.3 | V | Printed as VDD+0.3 V upper limit | 4 | ||
| CE Pin Voltage | VCE | -0.3 | V | Printed as VDD+0.3 V upper limit | 4 | ||
| EXT Pin Voltage (current) | IEXT | -1000 | 1000 | mA | 4 | ||
| Power Dissipation (SOT23-5) | Pd | 300 | mW | 4 | |||
| Operating Temperature Range | TOpr | -25 | 85 | ℃ | 4 | ||
| Storage Temperature Range | Tstg | -40 | 125 | ℃ | 4 | ||
| Supply voltage (VDD) operating range | VDD | 2.5 | 6 | V | Note 4: to stabilize output voltage and oscillation frequency; the table gives 2.5V≦VDD<6V | 5 | |
| Feedback voltage | VFB | 1.225 | 1.25 | 1.275 | V | 5 | |
| Input voltage | VIN | 6 | V | 5 | |||
| Operation start voltage | VST | 0.9 | V | IOUT=1mA | 5 | ||
| Operation holding voltage | VHLD | 0.7 | V | IOUT=1mA, Measured by decreasing VIN voltage gradually | 5 | ||
| Current consumption during shutdown | ISSS | 0.02 | 0.5 | μA | VCE=0V | 5 | |
| Feedback voltage temperature coefficient | -50 | 50 | ppm/℃ | Ta=-25-85℃ | 5 | ||
| Oscillation frequency | Fosc | 0.8 | 1 | 1.2 | MHz | 5 | |
| Shutdown pin input voltage (oscillation on) | VSH | 0.75 | V | Measured the oscillation at EXT pin | 5 | ||
| Shutdown pin input voltage (stop, VOUT≥1.5V) | VSL1 | 0.3 | V | Judged the stop of oscillation at EXT pin, VOUT≥1.5V | 5 | ||
| Shutdown pin input voltage (stop, VOUT<1.5V) | VSL2 | 0.2 | V | Judged the stop of oscillation at EXT pin, VOUT<1.5V | 5 | ||
| Shutdown pin input current (high) | ISH | -0.1 | 0.1 | μA | VCE=VFB(S)×0.95 | 5 | |
| Shutdown pin input current (low) | ISL | -0.1 | 0.1 | μA | VCE=0V | 5 |
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 | 12 |
CAD (KiCad official)
- Symbol:
ME2139FM5G - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
me2139fm5g-etched.step/me2139fm5g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);me2139fm5g.step/me2139fm5g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MICRONE datasheet (12 pp, sha256
2cbd1e9b5433ed52, retrieved 2026-10-21, 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).