component

ME2149FM5G

Public Made by Adom

by adom

MICRONE DC-DC Converters, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs me2149fm5g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
me2149fm5g-etched.fit.json me2149fm5g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
me2149fm5g-etched.glb me2149fm5g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
me2149fm5g-etched.step me2149fm5g: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
me2149fm5g.glb Publish 0.1.0 · Ray
me2149fm5g.kicad_mod Publish 0.1.0 · Ray
me2149fm5g.kicad_sym Publish 0.1.0 · Ray
me2149fm5g.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
me2149fm5g.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json me2149fm5g: specified limits as data (metadata.characteristics, 25 rows from the datasheet) · Ray
README.md me2149fm5g: specified limits as data (metadata.characteristics, 25 rows from the datasheet) · Ray

ME2149FM5G

MICRONE · DC-DC Converters · SOT-23-5

ME2149FM5G from MICRONE, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 CE input Chip enable / shutdown pin. Active-high enable: VSH ≥ 0.75V enables the oscillator, VSL ≤ 0.2-0.3V shuts down the IC. Shutdown current (ISSS) typ. 0.02µA, max 0.5µA at VCE=0V.
2 LX output Switching node - drain of the internal N-channel power MOSFET, connected to the external inductor/Schottky-diode node of the boost converter. Absolute max LX voltage -0.3 to VDD+0.3V; peak LX current ±4A. SOT23-5 recommended load ≤1A.
3 GND power_in Device ground reference. Return for internal power MOSFET source, control logic and reference.
4 VDD power_in IC power supply pin. Operating range 2.5V ≤ VDD ≤ 6V for stable operation; start-up guaranteed from 0.9V (IOUT=1mA). Absolute maximum -0.3 to 6.5V. Bypass with 0.1µF ceramic close to pin.
5 FB input Feedback voltage input to the internal error amplifier. Regulated to VFB = 1.25V typ (1.225-1.275V, ±2%). Set output with external divider R1/R2 from VOUT to GND.

Key specifications

Parameter Value
Manufacturer MICRONE
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • ME2149FM5G
  • ME2149FM5GP5
  • ME2149FM5GS

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
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 LX pin 5
Shutdown pin input voltage (oscillation stop, VOUT≥1.5V) VSL1 0.3 V Judged the stop of oscillation at LX pin; VOUT≥1.5V 5
Shutdown pin input voltage (oscillation stop, VOUT<1.5V) VSL2 0.2 V Judged the stop of oscillation at LX pin; VOUT<1.5V 5
Shutdown pin input current ISH -0.1 0.1 μA VCE=VFB(S)×0.95 5
Current consumption 1 ISS1 4 mA VFB=VFB(S)× 0.95 5
Current consumption 2 ISS2 25 μA VFB=1.5V 5
Max. duty ratio MAXDUTY 78 ﹪ VFB=VFB(S)× 0.95 5
PWM/PFM switching duty ratio PFMDUTY 15 ﹪ VFB=VFB(S)× 1.5, no load 5
Soft start time tss 2 mS 5
Efficiency EFFI 90 ﹪ 5
VDD pin voltage VDD -0.3 6.5 V 4
LX pin voltage (upper limit VDD+0.3) LX -0.3 V 4
CE pin voltage (upper limit VDD+0.3) VCE -0.3 V 4
LX pin current ILX -4000 4000 mA 4
Power dissipation (SOT23-5) Pd 300 mW SOT23-5 package 4
Operating temperature range TOpr -25 85 ℃ 4
Storage temperature range Tstg -40 125 ℃ 4
Supply voltage for stable output voltage and oscillation frequency VDD 2.5 6 V Note 1 and note 4: start-up from VDD=0.9V; 2.5V≦VDD<6V to stabilize output voltage and oscillation frequency 2

CAD (KiCad official)

  • Symbol: ME2149FM5G
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: me2149fm5g-etched.step / me2149fm5g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); me2149fm5g.step / me2149fm5g.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
me2149fm5g.step 85 KB You want the bare part, or you mark your own boards.
me2149fm5g-etched.step 1.7 MB You want the part with ME2149FM5G already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 431 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: MICRONE datasheet (13 pp, sha256 12aea13e59a159b5, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF