component

HE2021A44HMR

Public Made by Adom

by adom

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

componentpmiche2021a44hmr
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3D Model

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Symbol & Footprint

Schematic Symbol

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Datasheet

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Contents

README

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HE2021A44HMR

HEERMICR · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3

HE2021A44HMR from HEERMICR, in a SOT-23-3. 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 / common return. Single-point ground for input and output bypass capacitors.
2 VOUT power_out Regulated 4.4V (±1%) output, capable of sourcing up to 200mA. Requires a 10µF output capacitor (C2) to ground for stability.
3 VIN power_in Unregulated input supply, 5.4V to 35V absolute max (recommended VIN ≥ VOUT + dropout). Requires a 10µF input capacitor (C1) to ground.

Key specifications

Parameter Value
Manufacturer HEERMICR
Package SOT-23-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • HE2021A44HMR
  • HE2021A44HMRHMG
  • HE2021A44HMRHTR
  • HE2021A44HMRHTG
  • HE2021A44HMRHPR
  • HE2021A44HMRHPG
  • HE2021A44HMRHPBR
  • HE2021A44HMRHPBG
  • HE2021A44HMRHM5R
  • HE2021A44HMRHM5G

CAD (KiCad official)

  • Symbol: HE2021A44HMR
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: he2021a44hmr-etched.step / he2021a44hmr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); he2021a44hmr.step / he2021a44hmr.glb are the bare package body.

Provenance

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

  • Datasheet: HEERMICR datasheet (9 pp, sha256 7e6b713cd5492e1f, 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