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SP6669AEK-L

Public Unreviewed

by Ray

MaxLinear DC-DC Converters, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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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

markdown

SP6669AEK-L

MaxLinear · DC-DC Converters · SOT-23-5

SP6669AEK-L from MaxLinear, 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 EN input Enable pin. Do not leave floating. V_EN < 0.4V puts the device in shutdown mode; V_EN > 1.2V enables the device. Enable threshold is typically ~0.85V with I_EN leakage ≤ ±1µA.
2 GND power_in Ground signal. Device reference and return for all internal circuitry and the NMOS power switch.
3 SW output Switching node. Connects to the external inductor of the buck converter. Absolute range -0.3V to (VIN+0.3V); peak switch current up to 1.3A.
4 VIN power_in Power supply pin. Input voltage range 2.5V to 6.0V (absolute max 6.6V). Must be decoupled to ground with a 4.7µF or greater ceramic capacitor.
5 VFB input Feedback input pin. Connect VFB to the center point of the output resistor divider. Regulated feedback voltage is 0.6V (0.588V-0.612V); feedback current ≤ ±30nA.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • SP6669AEK-L/TRR3

CAD (KiCad official)

  • Symbol: SP6669AEK-L
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sp6669aek-l.step 85 KB You want the bare part, or you mark your own boards.
sp6669aek-l-etched.step 2.0 MB You want the part with SP6669AEK-L already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 495 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: MaxLinear datasheet (11 pp, sha256 01a6c9647be6ea24, 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