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HG1118M-1550

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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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Datasheet

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Contents

README

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HG1118M-1550

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

HG1118M-1550 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 power_in Ground / adjust pin for regulator 1. Tied to GND on this fixed-output (1.5V) variant. On adjustable versions, this pin is used to set the output via an external resistor divider (Iadj ~60 µA typ).
2 VIN1 power_in Input supply for regulator 1. Recommended operating input voltage 12 V; absolute max 15 V. Requires input decoupling capacitor (typ. 10 µF) close to the pin.
3 GND/ADJ2 power_in Ground / adjust pin for regulator 2. Tied to GND on this fixed-output (5.0V) variant. On adjustable versions, this pin sets the output via an external resistor divider.
4 VIN2 power_in Input supply for regulator 2. Recommended operating input voltage 12 V; absolute max 15 V. For 5.0V output, VIN2 should be ≥6.5V. Requires input decoupling capacitor (typ. 10 µF).
5 VOUT2 power_out Regulator 2 output (5.0V fixed on the -1550 variant). Tied to pin 6 internally/externally. Requires output capacitor (≥10 µF typ.; ≥22 µF for adjustable versions). Rated up to 1A steady-state; current limit 2.1-2.5 A.
6 VOUT2 power_out Regulator 2 output (5.0V fixed on the -1550 variant). Paralleled with pin 5 for higher current handling and better thermal performance.
7 VOUT1 power_out Regulator 1 output (1.5V fixed on the -1550 variant). Paralleled with pin 8. Requires output capacitor (≥10 µF typ.). Rated up to 1A steady-state; current limit 2.1-2.5 A.
8 VOUT1 power_out Regulator 1 output (1.5V fixed on the -1550 variant). Paralleled with pin 7 for higher current handling and better thermal performance.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • HG1118M-1550/TR

CAD (KiCad official)

  • Symbol: HG1118M-1550
  • 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