component

SY8009BABC

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by Ray

Silergy Corp DC-DC Converters, SOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

markdown

SY8009BABC

Silergy Corp · DC-DC Converters · SOT-23-6

SY8009BABC from Silergy Corp, 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 EN input Enable control input. Pull high (VENH >= 1.5V typ) to turn the regulator on; pull low (VENL <= 0.4V typ) to shut down (ISHDN = 0.1uA typ). Do not float. Absolute maximum: VIN + 0.6V.
2 GND power_in Ground pin. Also serves as the case reference for theta_JC thermal measurement. Maximize copper area on this pin for best thermal and noise performance.
3 LX output Switching node. Connect to the external inductor. Internal top PFET (100mΩ) and bottom NFET (80mΩ) switch this node between VIN and GND at ~1MHz. Dynamic voltage rating IN+3V to GND-4V for 50ns; minimize PCB copper area to reduce noise.
4 IN power_in Supply input pin. Recommended operating range 3V to 5.5V (absolute max 6.0V). Decouple to GND with at least 1uF (X7R, 6V rating, >=4.7uF recommended) ceramic capacitor placed close to the IN and GND pins.
5 NC unconnected No connect. Shown as NC on the SOT23-6 (SY8009B) pinout diagram; leave floating or tie to GND per board convention.
6 FB input Output voltage feedback pin. Connect to the center of the R1/R2 output divider to program VOUT = 0.6 * (1 + R1/R2). Reference VREF = 0.6V (0.588V to 0.612V); FB input current +/-50nA max. Absolute max: VIN + 0.6V.

Key specifications

Parameter Value
Manufacturer Silergy Corp
Package SOT-23-6
Category PMIC
Pins 6

Ordering variants

Same part, different packaging or reel option.

  • SY8009BABC
  • SY8009BEBC
  • SY8009AAAC

CAD (KiCad official)

  • Symbol: SY8009BABC
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Silergy Corp datasheet (9 pp, sha256 97a8aa981bd51b37, retrieved 2026-08-17, tier: manufacturer)
  • 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