component

MT36291

Public Made by Adom

by adom

Aerosemi DC-DC Converters, SOT-23-6. 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 mt36291: 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
mt36291-etched.fit.json mt36291: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
mt36291-etched.glb mt36291: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
mt36291-etched.step mt36291: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
mt36291.glb Publish 0.1.0 · Ray
mt36291.kicad_mod Publish 0.1.0 · Ray
mt36291.kicad_sym Publish 0.1.0 · Ray
mt36291.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
mt36291.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 mt36291: specified limits as data (metadata.characteristics, 20 rows from the datasheet) · Ray
README.md mt36291: specified limits as data (metadata.characteristics, 20 rows from the datasheet) · Ray

MT36291

Aerosemi · DC-DC Converters · SOT-23-6

MT36291 from Aerosemi, in a SOT-23-6. 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 SW power_out Power Switch Output. Drain of the internal 80mΩ N-channel power MOSFET. Connect the boost inductor and the Schottky output rectifier here. SW node can swing between GND and 22V.
2 GND power_in Ground pin. Connect to a solid ground plane for heat sinking and noise protection.
3 FB input Feedback input to the internal error amplifier. Regulated to the 0.6V internal bandgap reference. Connect an external resistor divider from VOUT to FB to GND to set the output voltage: VOUT = 0.6V x (1 + R1/R2). FB input bias current is typically -10nA.
4 EN input Regulator On/Off Control Input. Drive high (>1.5V) to enable the converter, low (<0.6V) to shut it down (shutdown current ~0.1µA). Tie to VIN for automatic startup. Absolute max 18V.
5 VIN power_in Input supply pin, 2.2V to 16V operating range (18V absolute max). Must be locally bypassed with a low-ESR ceramic capacitor (22µF X5R/X7R recommended) placed close to the IC.
6 OC input Adjustable peak switch current limit. Connect a resistor (19kΩ to 96kΩ) from OC to GND to program the current limit from 2.5A down to 0.5A per IOCP = 48000/R. Leave floating to use the internal 2.5A default current limit. Keep trace short.

Key specifications

Parameter Value
Manufacturer Aerosemi
Package SOT-23-6
Category PMIC
Pins 6

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Operating Input Voltage 2.2 16 V 3
FB Voltage 0.588 0.6 0.612 V 3
Adjustable OCP Current 0.5 2.5 A With External Resistor:19k~96k 3
SW On Resistance 80 150 mΩ 3
SW Leakage 1 µA VSW = 20V 3
FB Input Bias Current -50 -10 nA VFB = 0.6V 3
Quiescent Current (PFM) 100 200 µA VFB=0.7V，No switch 3
Quiescent Current (PWM) 1.6 2.2 mA VFB=0.5V，switch 3
Current (Shutdown) 0.1 1 µA VEN= 0V 3
VIN, EN voltages VIN, EN -0.3 18 V 2
FB Voltages FB -0.3 6 V 2
SW Voltage SW -0.3 22 V 2
Power Dissipation 0.6 W 2
Junction Temperature TJ 160 °C 2
Operating Temperature Range TA -40 85 °C 2
Storage Temperature Range -65 150 °C 2
ESD HBM (Human Body Mode) 2 kV Human Body Mode 2
ESD MM (Machine Mode) 200 V Machine Mode 2
Thermal Resistance θJC θJC 130 °C/W 2
Thermal Resistance θJA θJA 250 °C/W 2

CAD (KiCad official)

  • Symbol: MT36291
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: mt36291-etched.step / mt36291-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mt36291.step / mt36291.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
mt36291.step 97 KB You want the bare part, or you mark your own boards.
mt36291-etched.step 1.6 MB You want the part with MT36291 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 385 faces against 117 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: Aerosemi datasheet (9 pp, sha256 863d456e8ebecc44, 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