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LM2576S-5.0
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HGSEMI LM2576S 5 0 TR DC-DC Converters, TO-263-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+45@@ -0,0 +1,45 @@+# LM2576S-5.0++**UMW** · DC-DC Converters · TO-263-5++LM2576S-5.0 from UMW, in a TO-263-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | VIN | power_in | Input supply voltage. Operating range 4.5V to 40V for LM2576 (up to 60V for LM2576HV). Absolute maximum 45V (63V HV). Bypass with a suitable input capacitor close to this pin. |+| 2 | Output | output | Switching output from the internal 3A power switch. Connects to the external catch diode (e.g. 1N5822) and the smoothing inductor (typ. 100µH). Steady-state output voltage may swing down to -1V relative to GND. |+| 3 | GND | power_in | Device ground reference for the internal regulator, oscillator, error amplifier, and power switch return. |+| 4 | Feedback | input | Output voltage feedback input to the internal error amplifier. On fixed-voltage versions (like the -5.0), tie directly to the regulated output node so the internal divider senses VOUT (internal 1.23V band-gap reference). |+| 5 | ON/OFF | input | TTL-compatible active-low shutdown input. Low or floating enables the regulator; drive high to enter low-power standby mode (~50µA typ). Input range -0.3V to +VIN. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UMW |+| Package | TO-263-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `LM2576S-5.0S`+- `LM2576S-5.0T`++## CAD (KiCad official)++- Symbol: `LM2576S-5.0`+- Footprint: `Package_TO_SOT_SMD:TO-263-2`+- 3D model: TO-263-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [UMW datasheet](docs/lm2576s-5-0-datasheet.pdf) (18 pp, sha256 `10275fb18a78ad8b`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lm2576s-5-0-datasheet.pdf)
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