component
LM2596MDT-5.0
Public Made by Adomby adom
HGSEMI DC-DC Converters, TO-252-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM2596MDT-5.0
HGSEMI · DC-DC Converters · TO-252-4
LM2596MDT-5.0 from HGSEMI, in a TO-252-4. 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 requiring a DC supply of 4.5V to 40V (60V for HV versions), with a large capacitor placed between VIN and ground to remove supply noise. |
| 2 | OUTPUT | output | Power switch output and switching node that supplies the output load, rated -0.3V to VIN. |
| 3 | GND | power_in | Ground pin, drawn as a shortened stub in the TO-252-4 drawing and tied to the metal tab, which the datasheet labels GND; it should be placed on the output-point ground return path away from the Schottky diode to avoid switching-current spike noise. |
| 4 | FEEDBACK | input | Voltage feedback pin that senses the output voltage through a resistor divider network, with a feedback threshold voltage of 1.23V. |
| 5 | ON_OFF | input | Enable pin where a low level turns the chip on and a high level turns it off, defaulting to low when floating (high threshold 1.4V, low threshold 0.8V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | TO-252-4 |
| Category | Power Management (PMIC) |
| Pins | 5 |
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 regulation voltage, LM2596-5.0 (non-HV) | VOUT | 4.8 | 5 | 5.2 | V | VIN=7V～40V, ILOAD=0.2A～3A | 6 |
| Input operating voltage, LM2596 (non-HV) | VIN | 4.5 | 40 | V | 7 | ||
| Standby current | ISTBY | 80 | 200 | uA | VON_OFF=5V | 7 | |
| Quiescent operating current | IQ | 2 | 10 | mA | VON_OFF=0V, VFB=VIN | 7 | |
| Oscillator operating 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 | |||
| ON/OFF pin input current, high (OFF) | IH | 5 | 30 | µA | VON_OFF=2.5V(OFF) | 7 | |
| ON/OFF pin input current, low (ON) | IL | 0.2 | 10 | µA | VON_OFF=0.5V(ON) | 7 | |
| Saturation voltage | VCE | 1.3 | 1.5 | V | VFB=0V, LOUT=3A | 7 | |
| Maximum duty cycle | DMAX | 100 | % | CFB=0V | 7 | ||
| Input voltage, LM2596 (recommended) | VIN | 5 | 40 | V | 5 | ||
| Operating junction temperature range (recommended) | TJ | -40 | 125 | ℃ | 5 | ||
| Input supply voltage, LM2596 (absolute maximum) | VIN | 40 | V | 5 | |||
| Feedback pin voltage (absolute maximum) | VFB | -0.3 | V | Upper limit printed as VIN | 5 | ||
| ON/OFF pin voltage (absolute maximum) | VON_OFF | -0.3 | V | Upper limit printed as VIN | 5 | ||
| Power MOSFET output pin voltage (absolute maximum) | VOUT | -0.3 | V | Upper limit printed as VIN | 5 | ||
| Operating junction temperature (absolute maximum) | TJ | -40 | 125 | ℃ | 5 | ||
| Storage temperature | TSTG | -65 | 150 | ℃ | 5 | ||
| Lead soldering temperature | TLEAD | 260 | ℃ | 10 s, TO-252/SOP/DFN | 5 | ||
| ESD capability, human body model | ESD | 2000 | V | Human body model | 5 |
CAD (KiCad official)
- Symbol:
LM2596MDT-5.0 - Footprint:
Package_TO_SOT_SMD:TO-252-4 - 3D model: TO-252-4 (KiCad packages3D, STEP)
- 3D model files:
lm2596mdt-5-0-etched.step/lm2596mdt-5-0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2596mdt-5-0.step/lm2596mdt-5-0.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-sonnet-5-5(text+vision), consensusclaude-opus-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).
# LM2596MDT-5.0
**HGSEMI** · DC-DC Converters · TO-252-4
LM2596MDT-5.0 from HGSEMI, in a TO-252-4. 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 requiring a DC supply of 4.5V to 40V (60V for HV versions), with a large capacitor placed between VIN and ground to remove supply noise. |
| 2 | OUTPUT | output | Power switch output and switching node that supplies the output load, rated -0.3V to VIN. |
| 3 | GND | power_in | Ground pin, drawn as a shortened stub in the TO-252-4 drawing and tied to the metal tab, which the datasheet labels GND; it should be placed on the output-point ground return path away from the Schottky diode to avoid switching-current spike noise. |
| 4 | FEEDBACK | input | Voltage feedback pin that senses the output voltage through a resistor divider network, with a feedback threshold voltage of 1.23V. |
| 5 | ON_OFF | input | Enable pin where a low level turns the chip on and a high level turns it off, defaulting to low when floating (high threshold 1.4V, low threshold 0.8V). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | TO-252-4 |
| Category | Power Management (PMIC) |
| Pins | 5 |
## 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 regulation voltage, LM2596-5.0 (non-HV) | VOUT | 4.8 | 5 | 5.2 | V | VIN=7V～40V, ILOAD=0.2A～3A | 6 |
| Input operating voltage, LM2596 (non-HV) | VIN | 4.5 | | 40 | V | | 7 |
| Standby current | ISTBY | | 80 | 200 | uA | VON_OFF=5V | 7 |
| Quiescent operating current | IQ | | 2 | 10 | mA | VON_OFF=0V, VFB=VIN | 7 |
| Oscillator operating 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 |
| ON/OFF pin input current, high (OFF) | IH | | 5 | 30 | µA | VON_OFF=2.5V(OFF) | 7 |
| ON/OFF pin input current, low (ON) | IL | | 0.2 | 10 | µA | VON_OFF=0.5V(ON) | 7 |
| Saturation voltage | VCE | | 1.3 | 1.5 | V | VFB=0V, LOUT=3A | 7 |
| Maximum duty cycle | DMAX | | | 100 | % | CFB=0V | 7 |
| Input voltage, LM2596 (recommended) | VIN | 5 | | 40 | V | | 5 |
| Operating junction temperature range (recommended) | TJ | -40 | | 125 | ℃ | | 5 |
| Input supply voltage, LM2596 (absolute maximum) | VIN | | | 40 | V | | 5 |
| Feedback pin voltage (absolute maximum) | VFB | -0.3 | | | V | Upper limit printed as VIN | 5 |
| ON/OFF pin voltage (absolute maximum) | VON_OFF | -0.3 | | | V | Upper limit printed as VIN | 5 |
| Power MOSFET output pin voltage (absolute maximum) | VOUT | -0.3 | | | V | Upper limit printed as VIN | 5 |
| Operating junction temperature (absolute maximum) | TJ | -40 | | 125 | ℃ | | 5 |
| Storage temperature | TSTG | -65 | | 150 | ℃ | | 5 |
| Lead soldering temperature | TLEAD | | | 260 | ℃ | 10 s, TO-252/SOP/DFN | 5 |
| ESD capability, human body model | ESD | | | 2000 | V | Human body model | 5 |
## CAD (KiCad official)
- Symbol: `LM2596MDT-5.0`
- Footprint: `Package_TO_SOT_SMD:TO-252-4`
- 3D model: TO-252-4 (KiCad packages3D, STEP)
- 3D model files: `lm2596mdt-5-0-etched.step` / `lm2596mdt-5-0-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2596mdt-5-0.step` / `lm2596mdt-5-0.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/8756277848175202304) (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-sonnet-5-5` (text+vision), consensus `claude-opus-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/lm2596mdt-5-0-datasheet.pdf)