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LM2596SX-3.3-JSM
Public Made by Adomby adom
JSMSEMI DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM2596SX-3.3-JSM
JSMSEMI · DC-DC Converters · TO-263-5
LM2596SX-3.3-JSM from JSMSEMI, 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 pin requiring a 4.5V to 40V DC source (60V for HV types), with a large capacitor placed between this pin and ground to suppress supply noise. |
| 2 | OUTPUT | output | Power switch output pin, a switching node that supplies the output load. |
| 3 | GND | power_in | Ground pin, which should be placed on the ground return path away from the Schottky diode output loop to avoid switching current spike noise; the metal tab is also GND. |
| 4 | FEEDBACK | input | Voltage feedback pin that senses the output voltage through an external resistor divider, with a feedback threshold voltage of 1.23V. |
| 5 | ON_OFF | input | Enable pin where a low level enables the chip and a high level shuts it off, defaulting to low when floating. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | TO-263-5 |
| Category | Power Management (PMIC) |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
LM2596SX-3.3-JSM - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2596sx-3-3-jsm-etched.step/lm2596sx-3-3-jsm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2596sx-3-3-jsm.step/lm2596sx-3-3-jsm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JSMSEMI datasheet (10 pp, sha256
a271e578a0d6d8e7, retrieved 2026-10-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(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).
# LM2596SX-3.3-JSM
**JSMSEMI** · DC-DC Converters · TO-263-5
LM2596SX-3.3-JSM from JSMSEMI, 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 pin requiring a 4.5V to 40V DC source (60V for HV types), with a large capacitor placed between this pin and ground to suppress supply noise. |
| 2 | OUTPUT | output | Power switch output pin, a switching node that supplies the output load. |
| 3 | GND | power_in | Ground pin, which should be placed on the ground return path away from the Schottky diode output loop to avoid switching current spike noise; the metal tab is also GND. |
| 4 | FEEDBACK | input | Voltage feedback pin that senses the output voltage through an external resistor divider, with a feedback threshold voltage of 1.23V. |
| 5 | ON_OFF | input | Enable pin where a low level enables the chip and a high level shuts it off, defaulting to low when floating. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | TO-263-5 |
| Category | Power Management (PMIC) |
| Pins | 6 |
## CAD (KiCad official)
- Symbol: `LM2596SX-3.3-JSM`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files: `lm2596sx-3-3-jsm-etched.step` / `lm2596sx-3-3-jsm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2596sx-3-3-jsm.step` / `lm2596sx-3-3-jsm.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [JSMSEMI datasheet](docs/lm2596sx-3-3-jsm-datasheet.pdf) (10 pp, sha256 `a271e578a0d6d8e7`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/lm2596sx-3-3-jsm-datasheet.pdf)