component
HG2594M-ADJ
Public Made by Adomby adom
HGSEMI AC-DC Controllers And Regulators, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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HG2594M-ADJ
HGSEMI · AC-DC Controllers And Regulators · SOP-8
HG2594M-ADJ from HGSEMI, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No-function pin (listed as 'NC, 无功能脚') with no internal connection; leave unconnected. |
| 2 | NC | unconnected | No-function pin (listed as 'NC, 无功能脚') with no internal connection; leave unconnected. |
| 3 | NC | unconnected | No-function pin (listed as 'NC, 无功能脚') with no internal connection; leave unconnected. |
| 4 | FEEDBACK | input | Voltage feedback pin that monitors the output through a resistor divider network and regulates it, with a feedback threshold voltage of 1.23 V. |
| 5 | ON_OFF | input | Enable pin: a high level turns the chip off and a low level turns it on, with switching thresholds of 1.4 V (OFF) and 0.8 V (ON); the pin defaults to low when floating. |
| 6 | GND | power_in | Ground pin that should be routed on a ground path away from the Schottky diode layout to limit switching-spike noise. |
| 7 | VIN | power_in | Supply input requiring a DC supply of 4.5 V to 40 V (60 V for the HV version), with a large bulk capacitor placed between VIN and GND to suppress supply noise. |
| 8 | OUTPUT | output | Power switch output that is a switching node supplying the output load. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage, HG2594-ADJ | VOUT | 1.193 | 1.23 | 1.267 | V | VIN=4.5V～40V, ILOAD=0.2A～1A | 3 |
| Current limit | IL | 3.6 | 4.8 | 6.9 | A | VFB=0 | 4 |
| Oscillator operating frequency | FOSC | 127 | 150 | 173 | kHz | 4 | |
| Input operating voltage, HG2594 | VIN | 4.5 | 40 | V | 4 | ||
| Standby current | ISTBY | 80 | 200 | uA | VON_OFF=5V | 4 | |
| Quiescent operating current | IQ | 2 | 10 | mA | VON_OFF=0V, VFB=VIN | 4 | |
| Switch pin leakage (OFF) | IH | 5 | 30 | µA | VON_OFF=2.5V(OFF) | 4 | |
| Switch pin leakage (ON) | IL | 0.2 | 10 | µA | VON_OFF=0.5V(ON) | 4 | |
| Saturation voltage | VCE | 1.3 | 1.5 | V | VFB=0V, LOUT=1A | 4 | |
| Maximum duty cycle | DMAX | 100 | % | CFB=0V | 4 | ||
| Input voltage, HG2594 (recommended) | VIN | 5 | 40 | V | 2 | ||
| Operating junction temperature range (recommended) | TJ | -40 | 125 | ℃ | 2 | ||
| Input supply voltage, HG2594 (absolute maximum) | VIN | 40 | V | 2 | |||
| Feedback pin voltage (absolute maximum) | VFB | -0.3 | V | 2 | |||
| Switch (ON_OFF) pin voltage (absolute maximum) | VON_OFF | -0.3 | V | 2 | |||
| Power switch output pin voltage (absolute maximum) | VOUT PUT | -0.3 | V | 2 | |||
| Operating junction temperature (absolute maximum) | TJ | -40 | 125 | ℃ | 2 | ||
| Storage temperature | TSTG | -65 | 150 | ℃ | 2 | ||
| Lead soldering temperature | TLEAD | 260 | ℃ | 焊线温度，10s | 2 | ||
| ESD rating, human body model | ESD | 2000 | V | 人体放电模式 | 2 | ||
| Thermal resistance, junction to ambient | RJA | 150 | ℃/W | 4 |
CAD (KiCad official)
- Symbol:
HG2594M-ADJ - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
hg2594m-adj-etched.step/hg2594m-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hg2594m-adj.step/hg2594m-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (12 pp, sha256
d4af4acaad0ab6e7, retrieved 2026-10-18, 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: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# HG2594M-ADJ
**HGSEMI** · AC-DC Controllers And Regulators · SOP-8
HG2594M-ADJ from HGSEMI, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No-function pin (listed as 'NC, 无功能脚') with no internal connection; leave unconnected. |
| 2 | NC | unconnected | No-function pin (listed as 'NC, 无功能脚') with no internal connection; leave unconnected. |
| 3 | NC | unconnected | No-function pin (listed as 'NC, 无功能脚') with no internal connection; leave unconnected. |
| 4 | FEEDBACK | input | Voltage feedback pin that monitors the output through a resistor divider network and regulates it, with a feedback threshold voltage of 1.23 V. |
| 5 | ON_OFF | input | Enable pin: a high level turns the chip off and a low level turns it on, with switching thresholds of 1.4 V (OFF) and 0.8 V (ON); the pin defaults to low when floating. |
| 6 | GND | power_in | Ground pin that should be routed on a ground path away from the Schottky diode layout to limit switching-spike noise. |
| 7 | VIN | power_in | Supply input requiring a DC supply of 4.5 V to 40 V (60 V for the HV version), with a large bulk capacitor placed between VIN and GND to suppress supply noise. |
| 8 | OUTPUT | output | Power switch output that is a switching node supplying the output load. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage, HG2594-ADJ | VOUT | 1.193 | 1.23 | 1.267 | V | VIN=4.5V～40V, ILOAD=0.2A～1A | 3 |
| Current limit | IL | 3.6 | 4.8 | 6.9 | A | VFB=0 | 4 |
| Oscillator operating frequency | FOSC | 127 | 150 | 173 | kHz | | 4 |
| Input operating voltage, HG2594 | VIN | 4.5 | | 40 | V | | 4 |
| Standby current | ISTBY | | 80 | 200 | uA | VON_OFF=5V | 4 |
| Quiescent operating current | IQ | | 2 | 10 | mA | VON_OFF=0V, VFB=VIN | 4 |
| Switch pin leakage (OFF) | IH | | 5 | 30 | µA | VON_OFF=2.5V(OFF) | 4 |
| Switch pin leakage (ON) | IL | | 0.2 | 10 | µA | VON_OFF=0.5V(ON) | 4 |
| Saturation voltage | VCE | | 1.3 | 1.5 | V | VFB=0V, LOUT=1A | 4 |
| Maximum duty cycle | DMAX | | | 100 | % | CFB=0V | 4 |
| Input voltage, HG2594 (recommended) | VIN | 5 | | 40 | V | | 2 |
| Operating junction temperature range (recommended) | TJ | -40 | | 125 | ℃ | | 2 |
| Input supply voltage, HG2594 (absolute maximum) | VIN | | | 40 | V | | 2 |
| Feedback pin voltage (absolute maximum) | VFB | -0.3 | | | V | | 2 |
| Switch (ON_OFF) pin voltage (absolute maximum) | VON_OFF | -0.3 | | | V | | 2 |
| Power switch output pin voltage (absolute maximum) | VOUT PUT | -0.3 | | | V | | 2 |
| Operating junction temperature (absolute maximum) | TJ | -40 | | 125 | ℃ | | 2 |
| Storage temperature | TSTG | -65 | | 150 | ℃ | | 2 |
| Lead soldering temperature | TLEAD | | | 260 | ℃ | 焊线温度，10s | 2 |
| ESD rating, human body model | ESD | | | 2000 | V | 人体放电模式 | 2 |
| Thermal resistance, junction to ambient | RJA | | 150 | | ℃/W | | 4 |
## CAD (KiCad official)
- Symbol: `HG2594M-ADJ`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `hg2594m-adj-etched.step` / `hg2594m-adj-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hg2594m-adj.step` / `hg2594m-adj.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758075142209847296) (12 pp, sha256 `d4af4acaad0ab6e7`, retrieved 2026-10-18, 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:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/hg2594m-adj-datasheet.pdf)