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LM2596HVS-12
Public Made by Adomby adom
HGSEMI DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM2596HVS-12
HGSEMI · DC-DC Converters · TO-263-5
LM2596HVS-12 from HGSEMI, in a TO-263-5. 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 | VIN | power_in | Supply input that requires a DC source of 4.5V to 40V (60V for the HV version); a large-value capacitor should be connected between VIN and GND to suppress supply noise. |
| 2 | OUTPUT | output | Power switch output pin, a switching node that supplies the output load; the datasheet gives no voltage limit here beyond the absolute maximum rating of -0.3V to VIN. |
| 3 | GND | power_in | Ground pin, which should be routed on the ground return path away from the Schottky diode output point so that switching current spikes do not couple noise into the device. |
| 4 | FEEDBACK | input | Voltage feedback pin that senses the output through a resistor divider and regulates it, with a feedback threshold voltage of 1.23V. |
| 5 | ON_OFF | input | Enable pin: applying a high level shuts the device off and a low level turns it on, with thresholds of 1.4V (OFF) and 0.8V (ON), and the pin defaults to low when floating. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | TO-263-5 |
| Category | Power Management (PMIC) |
| Pins | 6 |
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 (LM2596HV-12) | VOUT | 11.52 | 12 | 12.48 | V | VIN=15V～60V, ILOAD=0.2A～3A | 6 |
| Input operating voltage (LM2596HV) | VIN | 4.5 | 60 | V | 7 | ||
| Oscillator frequency | FOSC | 127 | 150 | 173 | kHz | 7 | |
| Current limit | IL | 3.6 | 4.8 | 6.9 | A | VFB=0 | 7 |
| ON/OFF pin threshold voltage, high (control off) | VON_OFF | 1.4 | V | 7 | |||
| ON/OFF pin threshold voltage, low (control on) | VON_OFF | 0.8 | V | 7 | |||
| Maximum duty cycle | DMAX | 100 | % | CFB=0V | 7 | ||
| Saturation voltage | VCE | 1.3 | 1.5 | V | VFB=0V, LOUT=3A | 7 | |
| Standby current | ISTBY | 80 | 200 | uA | VON_OFF=5V | 7 | |
| Quiescent operating current | IQ | 2 | 10 | mA | VON_OFF=0V, VFB=VIN | 7 | |
| Switch pin leakage current (OFF) | IH | 5 | 30 | µA | VON_OFF=2.5V(OFF) | 7 | |
| Switch pin leakage current (ON) | IL | 0.2 | 10 | µA | VON_OFF=0.5V(ON) | 7 | |
| Input voltage (LM2596HV), absolute maximum | VIN | 60 | V | 5 | |||
| Feedback pin voltage, absolute maximum (lower limit) | VFB | -0.3 | V | 5 | |||
| ON/OFF pin voltage, absolute maximum (lower limit) | VON_OFF | -0.3 | V | 5 | |||
| Power transistor output pin voltage, absolute maximum (lower limit) | VOUT | -0.3 | V | 5 | |||
| Operating junction temperature, absolute maximum | TJ | -40 | 125 | ℃ | 5 | ||
| Storage temperature | TSTG | -65 | 150 | ℃ | 5 | ||
| Lead soldering temperature | TLEAD | 245 | ℃ | 10 s, TO-220/TO-263 | 5 | ||
| ESD capability (human body model) | ESD | 2000 | V | Human body model | 5 | ||
| Input voltage (LM2596HV), recommended operating | VIN | 5 | 60 | V | 5 | ||
| Operating junction temperature range, recommended | TJ | -40 | 125 | ℃ | 5 | ||
| Junction-to-ambient thermal resistance (TO-263) | RθJA | 42.6 | °C/W | TO-263 column | 5 | ||
| Junction-to-case (top) thermal resistance (TO-263) | RθJC(top) | 43.3 | °C/W | TO-263 column | 5 | ||
| Junction-to-board thermal resistance (TO-263) | RθJB | 22.4 | °C/W | TO-263 column | 5 | ||
| Junction-to-case (bottom) thermal resistance (TO-263) | RθJC(bot) | 0.4 | °C/W | TO-263 column | 5 | ||
| Junction-to-top characterization parameter (TO-263) | ΨJT | 10.7 | °C/W | TO-263 column | 5 | ||
| Junction-to-board characterization parameter (TO-263) | ΨJB | 21.3 | °C/W | TO-263 column | 5 | ||
| Thermal resistance, junction-to-ambient, without heatsink (TO-263 package) | RJA | 50 | ℃/W | TO220, TO263 package, without heatsink | 7 |
CAD (KiCad official)
- Symbol:
LM2596HVS-12 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2596hvs-12-etched.step/lm2596hvs-12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2596hvs-12.step/lm2596hvs-12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (17 pp, sha256
986b3081cc1a4676, 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).
# LM2596HVS-12
**HGSEMI** · DC-DC Converters · TO-263-5
LM2596HVS-12 from HGSEMI, in a TO-263-5. 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 | VIN | power_in | Supply input that requires a DC source of 4.5V to 40V (60V for the HV version); a large-value capacitor should be connected between VIN and GND to suppress supply noise. |
| 2 | OUTPUT | output | Power switch output pin, a switching node that supplies the output load; the datasheet gives no voltage limit here beyond the absolute maximum rating of -0.3V to VIN. |
| 3 | GND | power_in | Ground pin, which should be routed on the ground return path away from the Schottky diode output point so that switching current spikes do not couple noise into the device. |
| 4 | FEEDBACK | input | Voltage feedback pin that senses the output through a resistor divider and regulates it, with a feedback threshold voltage of 1.23V. |
| 5 | ON_OFF | input | Enable pin: applying a high level shuts the device off and a low level turns it on, with thresholds of 1.4V (OFF) and 0.8V (ON), and the pin defaults to low when floating. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | TO-263-5 |
| Category | Power Management (PMIC) |
| Pins | 6 |
## 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 (LM2596HV-12) | VOUT | 11.52 | 12 | 12.48 | V | VIN=15V～60V, ILOAD=0.2A～3A | 6 |
| Input operating voltage (LM2596HV) | VIN | 4.5 | | 60 | V | | 7 |
| Oscillator frequency | FOSC | 127 | 150 | 173 | kHz | | 7 |
| Current limit | IL | 3.6 | 4.8 | 6.9 | A | VFB=0 | 7 |
| ON/OFF pin threshold voltage, high (control off) | VON_OFF | 1.4 | | | V | | 7 |
| ON/OFF pin threshold voltage, low (control on) | VON_OFF | | | 0.8 | V | | 7 |
| Maximum duty cycle | DMAX | | | 100 | % | CFB=0V | 7 |
| Saturation voltage | VCE | | 1.3 | 1.5 | V | VFB=0V, LOUT=3A | 7 |
| Standby current | ISTBY | | 80 | 200 | uA | VON_OFF=5V | 7 |
| Quiescent operating current | IQ | | 2 | 10 | mA | VON_OFF=0V, VFB=VIN | 7 |
| Switch pin leakage current (OFF) | IH | | 5 | 30 | µA | VON_OFF=2.5V(OFF) | 7 |
| Switch pin leakage current (ON) | IL | | 0.2 | 10 | µA | VON_OFF=0.5V(ON) | 7 |
| Input voltage (LM2596HV), absolute maximum | VIN | | | 60 | V | | 5 |
| Feedback pin voltage, absolute maximum (lower limit) | VFB | -0.3 | | | V | | 5 |
| ON/OFF pin voltage, absolute maximum (lower limit) | VON_OFF | -0.3 | | | V | | 5 |
| Power transistor output pin voltage, absolute maximum (lower limit) | VOUT | -0.3 | | | V | | 5 |
| Operating junction temperature, absolute maximum | TJ | -40 | | 125 | ℃ | | 5 |
| Storage temperature | TSTG | -65 | | 150 | ℃ | | 5 |
| Lead soldering temperature | TLEAD | | | 245 | ℃ | 10 s, TO-220/TO-263 | 5 |
| ESD capability (human body model) | ESD | | | 2000 | V | Human body model | 5 |
| Input voltage (LM2596HV), recommended operating | VIN | 5 | | 60 | V | | 5 |
| Operating junction temperature range, recommended | TJ | -40 | | 125 | ℃ | | 5 |
| Junction-to-ambient thermal resistance (TO-263) | RθJA | | 42.6 | | °C/W | TO-263 column | 5 |
| Junction-to-case (top) thermal resistance (TO-263) | RθJC(top) | | 43.3 | | °C/W | TO-263 column | 5 |
| Junction-to-board thermal resistance (TO-263) | RθJB | | 22.4 | | °C/W | TO-263 column | 5 |
| Junction-to-case (bottom) thermal resistance (TO-263) | RθJC(bot) | | 0.4 | | °C/W | TO-263 column | 5 |
| Junction-to-top characterization parameter (TO-263) | ΨJT | | 10.7 | | °C/W | TO-263 column | 5 |
| Junction-to-board characterization parameter (TO-263) | ΨJB | | 21.3 | | °C/W | TO-263 column | 5 |
| Thermal resistance, junction-to-ambient, without heatsink (TO-263 package) | RJA | | 50 | | ℃/W | TO220, TO263 package, without heatsink | 7 |
## CAD (KiCad official)
- Symbol: `LM2596HVS-12`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files: `lm2596hvs-12-etched.step` / `lm2596hvs-12-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2596hvs-12.step` / `lm2596hvs-12.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/8756277786854612992) (17 pp, sha256 `986b3081cc1a4676`, 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/lm2596hvs-12-datasheet.pdf)