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HX7550

Public Unreviewed

by Ray

HX hengjiaxing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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HX7550

HX hengjiaxing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23

HX7550 from HX hengjiaxing, in a SOT-23. 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 GND power_in Chip ground (芯片接地端). Common return for input and output.
2 VOUT power_out Regulated output (芯片输出端). Delivers fixed 5.0V ±3% for HX7550 up to ~100mA typical; requires a 10µF output capacitor to ground for stability.
3 VIN power_in Supply input (启动输入端). Accepts up to 18V operating (20V absolute max); bypass with a 10µF capacitor to GND.

Key specifications

Parameter Value
Manufacturer HX hengjiaxing
Package SOT-23
Category PMIC
Pins 3

CAD (KiCad official)

  • Symbol: HX7550
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: HX hengjiaxing datasheet (9 pp, sha256 a346bc691aa07bf5, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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