LM2596-5.0FW05ARHQ

@@ -0,0 +1,45 @@+# LM2596-5.0FW05ARHQ++**GR LM2596 5 0FW05ARHQ** · DC-DC Converters · TO-263-5++LM2596-5.0FW05ARHQ from GR LM2596 5 0FW05ARHQ, 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 | Positive input supply for the IC switching regulator. Operating range 4.5 V to 40 V (45 V absolute maximum). A suitable input bypass capacitor (e.g. 470 μF, 50 V) must be present at this pin to minimize voltage transients and supply the switching currents required by the regulator. |+| 2 | Output | output | Internal power switch output (emitter of the 3 A internal NPN switch). The voltage at this pin switches between approximately (+VIN − VSAT, VSAT ≈ 1.5 V at 3 A) and approximately −0.5 V with a duty cycle of VOUT/VIN. Connect to the catch diode and inductor of the buck output stage; keep the PCB copper area on this node small to minimize EMI coupling. |+| 3 | GND | power_in | Circuit ground return for the IC. On the TO-263 package the metal tab is internally connected to GND and serves as the primary thermal path to the PCB copper plane. |+| 4 | Feedback | input | Senses the regulated output voltage to complete the internal feedback loop. On the fixed 5 V version this pin is tied directly to the regulated 5 V output through the application circuit (internal divider sets 5 V ±4% over line/load). Absolute maximum feedback pin voltage is −0.3 V to 25 V. |+| 5 | ~{ON}/OFF | input | Active-low TTL-compatible shutdown control. Pulling this pin below ~1 V (VIH threshold typ 1.3 V) turns the regulator on; pulling it above ~1.3 V (up to 25 V max) shuts the regulator down, dropping total input supply current to ~80 μA standby. Input current is ~10 μA at 2.5 V. If shutdown is not used, tie to GND or leave open (regulator will be ON). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | GR LM2596 5 0FW05ARHQ |+| Package | TO-263-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `LM2596-5.0FW05ARHQFW05ARHQ`+- `LM2596-5.0FW05ARHQDW05ATEQ`++## CAD (KiCad official)++- Symbol: `LM2596-5.0FW05ARHQ`+- 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:** [GR LM2596 5 0FW05ARHQ datasheet](docs/lm2596-5-0fw05arhq-datasheet.pdf) (9 pp, sha256 `17c54a9eaf1cc15c`, 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/lm2596-5-0fw05arhq-datasheet.pdf)

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