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HG1118M-33AD

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by Ray

HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, ESOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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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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HG1118M-33AD

HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · ESOP-8

HG1118M-33AD from HGSEMI, in a ESOP-8. 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/ADJ1 passive Regulator 1 ground (fixed version) / adjust feedback pin (adjustable version). For fixed 3.3V output on this variant, tie to system ground. Iadj is typically 60µA (max 120µA) when used as ADJ.
2 VIN1 power_in Regulator 1 input supply voltage. Recommended VIN = 12V; absolute maximum 15V. For 3.3V output requires VIN ≥ 4.75V.
3 GND/ADJ2 passive Regulator 2 ground (fixed version) / adjust feedback pin (adjustable version). On the -33AD variant regulator 2 is the adjustable channel, so this pin is the ADJ feedback node connected to the R1/R2 divider (VREF = 1.25V typical).
4 VIN2 power_in Regulator 2 input supply voltage. Recommended VIN = 12V; absolute maximum 15V. Must be ≥ VOUT + 1.4V for regulation (1.3V dropout at 800mA).
5 VOUT2 power_out Regulator 2 output (adjustable channel on -33AD variant). Set by VOUT = 1.25V × (1 + R1/R2). Up to 1.0A steady-state, 2.1-2.5A current-limit. Requires at least 22µF output capacitor for stability on the adjustable version.
6 VOUT2 power_out Regulator 2 output (adjustable). Internally connected to pin 5; both pins carry regulator 2's output current.
7 VOUT1 power_out Regulator 1 output (fixed 3.3V on -33AD variant, ±1.5% initial accuracy). Up to 1.0A steady-state, 2.1-2.5A current-limit. Requires an output capacitor (10µF typical for fixed version) for stability.
8 VOUT1 power_out Regulator 1 output (fixed 3.3V). Internally connected to pin 7; both pins carry regulator 1's output current.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package ESOP-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • HG1118M-33AD/TR

CAD (KiCad official)

  • Symbol: HG1118M-33AD
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: HGSEMI datasheet (None pp, sha256 b96732d7b751a79e, 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