LM2594M-5.0

@@ -0,0 +1,47 @@+# LM2594M-5.0++**UMW** · DC-DC Converters · SOP-8++LM2594M-5.0 from UMW, in a SOP-8. 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 | NC | unconnected | No connection. Leave floating or tie to ground plane per layout preference; not internally bonded. |+| 2 | NC | unconnected | No connection. Leave floating or tie to ground plane per layout preference; not internally bonded. |+| 3 | NC | unconnected | No connection. Leave floating or tie to ground plane per layout preference; not internally bonded. |+| 4 | Feedback | input | Feedback pin (FB). Senses the output voltage through an external resistor divider and regulates it against the internal 1.23 V reference. On fixed-output versions (5.0V variant) this pin ties directly to the regulated output node. |+| 5 | ON/OFF | input | Enable / shutdown input with hysteresis. Drive low (< 0.8 V) to enable the regulator, drive high (> 1.4 V) to shut down. Absolute max 25 V. Floating defaults low (enabled). Input leakage 0.2-15 µA depending on state. |+| 6 | GND | power_in | Ground return for the device. Must be placed outside the Schottky-diode-to-output-capacitor ground path to prevent switching-current spikes from inducing voltage noise into the LM2594(HV). |+| 7 | VIN | power_in | Supply voltage input. Operates from 4.5 V to 40 V DC (4.5 V to 60 V for the HV variant). Bypass VIN to GND with a suitably large low-ESR capacitor (e.g., 470 µF/35 V for a 12 V input) to eliminate input-line noise. |+| 8 | Output | output | Power switch output pin (SW). Internal NPN switch node that supplies power to the external inductor / Schottky catch diode / output capacitor network. Saturation voltage ~1.2 V at 1.5 A load. Rated for 1.5 A continuous. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UMW |+| Package | SOP-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `LM2594M-5.0M-5.0`++## CAD (KiCad official)++- Symbol: `LM2594M-5.0`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [UMW datasheet](docs/lm2594m-5-0-datasheet.pdf) (17 pp, sha256 `b4935ffaa609c227`, 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/lm2594m-5-0-datasheet.pdf)

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