component
LM2596S-3.3-HXY
Public Made by Adomby adom
HXY MOSFET DC-DC Converters, TO-263-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM2596S-3.3-HXY
HXY MOSFET · DC-DC Converters · TO-263-5L
LM2596S-3.3-HXY from HXY MOSFET, in a TO-263-5L. 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 | Input supply voltage, rated -0.3 to 45 V absolute maximum. |
| 2 | Output | output | Switching output of the regulator; pin voltage -0.3 to Vin+0.3 V and not below -1 V to ground in steady state. |
| 3 | Gnd | power_in | Ground. |
| 4 | Feedback | input | Output voltage feedback pin, rated -0.3 to Vin+0.3 V. |
| 5 | ON/OFF | input | Shutdown input, active low or floating for regulator on; pin voltage -0.3 to Vin+0.3 V. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HXY MOSFET |
| Package | TO-263-5L |
| Category | Power Supply Chip |
| 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 (3.3V version) | Vout | 3.168 | 3.3 | 3.432 | V | 4.75V≤VIN≤40V, 0.5A≤ILOAD≤3.5A | 4 |
| Efficiency (3.3V version) | η | 76 | % | VIN=12V, ILOAD=3.5A | 4 | ||
| Quiescent current | IQ | 5 | 10 | mA | VFB=12V force driver off | 3 | |
| Standby quiescent current | ISTBY | 80 | 200 | uA | ON/OFF=5V, VIN=36V | 3 | |
| Oscillator frequency | FOSC | 127 | 150 | 173 | KHz | 3 | |
| Saturation voltage | VSAT | 1.2 | 1.4 | V | IOUT=3.5A | 3 | |
| Current limit | ICL | 4.5 | 5.5 | A | Peak Current (VFB=0V) | 3 | |
| Output leakage current | IL | 50 | uA | Output=0V (VFB=12V) | 3 | ||
| Output leakage current | IL | 2 | 30 | mA | Output=-1V (VIN=36V) | 3 | |
| ON/OFF pin logic input Low (Regulator ON) | VIL | 1.3 | 1.6 | V | 3 | ||
| ON/OFF threshold voltage High (Regulator OFF) | VIH | 2 | 1.3 | V | Regulator OFF | 4 | |
| ON/OFF pin input current | IH | 5 | 15 | uA | VLOGIC=2.5V (Regulator OFF) | 4 | |
| ON/OFF pin input current | IL | 0.02 | 5 | uA | VLOGIC=0.5V (Regulator ON) | 4 | |
| Thermal Resistance Junction to Case | θJC | 3.5 | C/W | 4 | |||
| Thermal Resistance Junction to Ambient | θJA | 23 | C/W | Copper area approx. 3 in2 | 4 | ||
| Supply Voltage | Vin | -0.3 | 45 | V | 3 | ||
| Feedback VFB pin voltage | VFB | -0.3 | V | -0.3 to Vin+0.3 | 3 | ||
| ON/OFF Pin voltage | -0.3 | V | -0.3 to Vin+0.3 | 3 | |||
| Output pin voltage | -0.3 | V | -0.3 to Vin+0.3 | 3 | |||
| Output Voltage to Ground (Steady State) | -1 | V | 3 | ||||
| Operating Temperature Range | -40 | 125 | °C | 3 | |||
| Storage Temperature | -65 | 150 | °C | 3 | |||
| Lead Temperature (Soldering, 10 sec) | 200 | °C | 3 | ||||
| ESD (HM) | 2000 | V | 3 | ||||
| Thermal Resistance-Junction to Ambient | RθJA | 85 | ºC / W | 3 | |||
| Thermal Resistance-Junction to Case | RθJC | 45 | ºC / W | 3 |
CAD (KiCad official)
- Symbol:
LM2596S-3.3-HXY - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5L (KiCad packages3D, STEP)
- 3D model files:
lm2596s-3-3-hxy-etched.step/lm2596s-3-3-hxy-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2596s-3-3-hxy.step/lm2596s-3-3-hxy.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HXY MOSFET datasheet (9 pp, sha256
c8dc5079f9e12376, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).