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Contents

README

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SXL1509-ADJE1

JSMSEMI · DC-DC Converters · SOP-8

SXL1509-ADJE1 from JSMSEMI, in a SOP-8. 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 VIN power_in Positive supply input for the switching regulator. Absolute max +40 V; operating 4.5 V to 40 V. Requires a bypass capacitor to minimize input voltage transients and supply switching current.
2 Output output Power switching output pin from the internal 3 A transistor. Voltage at this pin swings between (+VIN - VSAT) and about -0.5 V; VSAT is typically 1.2 V at IOUT = 2 A. PCB copper on this net should be minimized to reduce switching-noise coupling.
3 FB input Output-voltage feedback control input; senses the regulated output through a divider to close the feedback loop. Regulation reference VFB = 1.23 V typ (adjustable version); feedback bias current 50 nA typ, 100 nA max. Absolute max -0.3 V to VIN.
4 EN input ON/OFF shutdown logic input. Pulling EN below ~1.3 V (VIL <= 0.6 V) enables the regulator; pulling EN above ~1.3 V (VIH >= 2.0 V) shuts the regulator down to ~150 uA standby current. Tie to GND if shutdown is not used. Absolute max -0.3 V to VIN.
5 GND power_in Circuit ground. Pins 5, 6, 7 and 8 are all GND and must be tied together to the ground plane for proper operation and thermal dissipation.
6 GND power_in Circuit ground. Tie to system GND alongside pins 5, 7 and 8.
7 GND power_in Circuit ground. Tie to system GND alongside pins 5, 6 and 8.
8 GND power_in Circuit ground. Tie to system GND alongside pins 5, 6 and 7; use wide copper for thermal dissipation.

Key specifications

Parameter Value
Manufacturer JSMSEMI
Package SOP-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • SXL1509-ADJE1

CAD (KiCad official)

  • Symbol: SXL1509-ADJE1
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: sxl1509-adje1-etched.step / sxl1509-adje1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sxl1509-adje1.step / sxl1509-adje1.glb are the bare package body.

Provenance

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

  • Datasheet: JSMSEMI datasheet (9 pp, sha256 fe55d8c30e122f5a, 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