AP1509-50SG-13

@@ -0,0 +1,47 @@+# AP1509-50SG-13++**Diodes Incorporated** · DC-DC Converters · SOP-8++AP1509-50SG-13 from Diodes Incorporated, 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 | VIN | power_in | Operating voltage input. Supply pin, recommended 4.5V to 22V (absolute max +24V). Bypass with a bulk input capacitor close to the pin. |+| 2 | Output | output | Switching output from the internal 2A power switch. Connects to the external inductor and Schottky catch diode of the buck converter. Saturation voltage ~1.25V typ at IOUT = 2A. |+| 3 | FB | input | Output voltage feedback control. On the fixed 5V version this pin is internally tied to sense the 5V output; on adjustable versions the internal reference is VFB = 1.23V. Absolute max -0.3 to +18V. |+| 4 | SD | input | ON/OFF shutdown input. Logic low (VIL < 0.6V) enables the regulator; logic high (VIH >= 2.0V) forces standby mode. Absolute max -0.3 to +18V. |+| 5 | GND | power_in | Ground return. Pins 5-8 are all GND and should be tied together to the ground plane to improve thermal dissipation of the SOP-8L package. |+| 6 | GND | power_in | Ground return. Tie together with pins 5, 7, and 8 to the ground plane. |+| 7 | GND | power_in | Ground return. Tie together with pins 5, 6, and 8 to the ground plane. |+| 8 | GND | power_in | Ground return. Tie together with pins 5, 6, and 7 to the ground plane. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SOP-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `AP1509-50SG-1350SG-13`++## CAD (KiCad official)++- Symbol: `AP1509-50SG-13`+- 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:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/AP1509-50SG-13.pdf) (12 pp, sha256 `736e1f216a8fa351`, retrieved 2026-08-17, tier: manufacturer)+- **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/ap1509-50sg-13-datasheet.pdf)

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