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Contents

README

markdown

SM5701_2.2V

HICHON · DC-DC Converters · SOT-23-3L

SM5701_2.2V from HICHON, in a SOT-23-3L. 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 Ground reference for the device. Connect to the system ground plane.
2 LX power_out Switch node. Connect the external boost inductor (recommended 4.7µH) between LX and the input supply. Also serves as the input current path from the battery through the inductor.
3 VOUT power_out Regulated boost output (2.2V for this variant). Connect a 22µF output capacitor (COUT) to GND. Absolute maximum rating -0.3V to 6.5V; internal current limit typ. 800mA (600-1000mA).

Key specifications

Parameter Value
Manufacturer HICHON
Package SOT-23-3L
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • SM5701_2.2VM
  • SM5701_2.2VV
  • SM5701_2.2VS
  • SM5701_2.2VP
  • SM5701_2.2VL

CAD (KiCad official)

  • Symbol: SM5701_2.2V
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: sm5701-2-2v-etched.step / sm5701-2-2v-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sm5701-2-2v.step / sm5701-2-2v.glb are the bare package body.

Provenance

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

  • Datasheet: HICHON datasheet (11 pp, sha256 6c830b7b2a7068c0, 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