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HG1118M-AD33

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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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Contents

README

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HG1118M-AD33

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

HG1118M-AD33 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 input Regulator 1 ground / adjust pin. For the adjustable channel (regulator 1 on -AD33), tie to the R1/R2 feedback divider that sets VOUT1 = VREF*(1+R1/R2) + Iadj*R1, with VREF = 1.25V typ and Iadj = 60µA typ.
2 VIN1 power_in Regulator 1 supply input. Recommended VIN = 12V, absolute max 15V; requires at least VOUT+1.3V headroom at 800mA. Bypass with ~10µF at the pin.
3 GND/ADJ2 power_in Regulator 2 ground / adjust pin. For the fixed 3.3V channel on -AD33, tie directly to system ground.
4 VIN2 power_in Regulator 2 supply input. Absolute max 15V; for the 3.3V fixed channel spec range is 4.75V ≤ VIN ≤ 10V. Bypass with ~10µF at the pin.
5 VOUT2 power_out Regulator 2 output (parallel with pin 6). Delivers the fixed 3.3V rail (3.235-3.365V worst-case) at up to 1A. Requires an output capacitor (≥22µF for the adjustable version; smaller acceptable for fixed versions).
6 VOUT2 power_out Regulator 2 output (parallel with pin 5). Tie together with pin 5 externally to share current and reduce trace resistance.
7 VOUT1 power_out Regulator 1 output (parallel with pin 8). Adjustable output on -AD33; set by external R1/R2 divider to the ADJ1 pin. Requires ≥22µF output capacitor for stability of the adjustable version.
8 VOUT1 power_out Regulator 1 output (parallel with pin 7). Tie together with pin 7 externally.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • HG1118M-AD33

CAD (KiCad official)

  • Symbol: HG1118M-AD33
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: HGSEMI datasheet (10 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