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HE2240A50HMR

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by Ray

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

componentpmiche2240a50hmr
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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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HE2240A50HMR

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

HE2240A50HMR 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 Device ground reference. Return path for input and output currents; connect to a single-point ground with a wide, short copper trace back to input/output capacitor grounds.
2 VOUT power_out Regulated 5.0V output (Vset0.98 to Vset1.02, tolerance ±2%). Delivers up to 250mA. Requires a 10µF ceramic (X7R/X5R) output capacitor placed close to VOUT and GND for stability.
3 VIN power_in Unregulated input supply, 3.0V to 40V absolute range. Requires a 10µF ceramic decoupling capacitor to GND placed as close as possible to the pin. Dropout ~800mV at 250mA / ~320mV at 100mA for the 5.0V option.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • HE2240A50HMR
  • HE2240A50HMRMG
  • HE2240A50HMRMBR
  • HE2240A50HMRMBG
  • HE2240A50HMRPR
  • HE2240A50HMRPG
  • HE2240A50HMRPBR
  • HE2240A50HMRPBG

CAD (KiCad official)

  • Symbol: HE2240A50HMR
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: HEERMICR datasheet (9 pp, sha256 30afcc83266a65aa, 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