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Contents

README

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MEL7136AP5G

MICRONE · LED Drivers · SOT-89-5

MEL7136AP5G from MICRONE, in a SOT-89-5. 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 CS input Current sense input. Connect the top of the external sense resistor REXT (from LED cathode / external MOSFET source to GND) here. The internal loop regulates VCS to 100 mV (typ; 95-105 mV), so ILED = 0.1 V / REXT.
2 D(LED) output LED sink (open-drain of internal NMOS). Connect to the cathode of the LED string. Sinks the regulated constant current (10 mA-1 A) down to REXT / CS. Absolute max VLED = -0.3 V to VDD+0.3 V.
3 VDD power_in Power supply input. Operating range 2.7 V to 18 V (absolute max 18 V). Bypass with 10 uF CIN close to the pin. Low-voltage protection releases at ~2.5 V (0.15 V hysteresis).
4 GND power_in Device ground reference and current-return path. Tie to the ground plane / bottom of REXT.
5 EXT output Gate drive for an optional external NMOS or NPN transistor used to extend current (>1 A) or voltage range. Absolute max VEXT = 6 V; typical drive swing 2.5-4.5 V (VDD=5 V, VCS=0 V). Leave floating when the internal driver alone is sufficient (light load configuration).

Key specifications

Parameter Value
Manufacturer MICRONE
Package SOT-89-5
Category LED-drv
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • MEL7136AP5G
  • MEL7136AP5GASP
  • MEL7136AP5GBM5

CAD (KiCad official)

  • Symbol: MEL7136AP5G
  • Footprint: Package_TO_SOT_SMD:SOT-89-5
  • 3D model: SOT-89-5 (KiCad packages3D, STEP)
  • 3D model files: mel7136ap5g-etched.step / mel7136ap5g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mel7136ap5g.step / mel7136ap5g.glb are the bare package body.

Provenance

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

  • Datasheet: MICRONE datasheet (14 pp, sha256 6206ba4720a74412, 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