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LM2576SX-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.
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
markdownLM2576SX-3.3-JSM
JSMSEMI · DC-DC Converters · TO-263-5
LM2576SX-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 | Unregulated input supply pin; datasheet gives absolute maximum input voltage of 45V and a rated operating range of 4V to 40V. |
| 2 | OUTPUT | output | Switch output of the internal power transistor; output leakage is 2mA max at Output = 0V and absolute maximum output voltage to common is -1V. |
| 3 | COMMON | power_in | Common (ground) pin of the regulator, also connected to the package tab. |
| 4 | FEEDBACK | input | Feedback sense input to the error amplifier; for the 3.3V fixed option it connects to the regulated output, with the internal divider setting a 3.30V typical output. |
| 5 | ON/OFF | input | Active-low shutdown/enable input: 0V (On) enables the regulator and 5V (Off) puts it in standby, with a limit of -0.3V to VIN. |
| 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:
LM2576SX-3.3-JSM - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2576sx-3-3-jsm-etched.step/lm2576sx-3-3-jsm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2576sx-3-3-jsm.step/lm2576sx-3-3-jsm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JSMSEMI datasheet (12 pp, sha256
f4e598e0081d5190, retrieved 2026-10-24, 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).