AL1663RS-13

@@ -0,0 +1,47 @@+# AL1663RS-13++**Diodes Incorporated** · LED Drivers · SO-8++AL1663RS-13 from Diodes Incorporated, in a SO-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 | Not connected. On AL1663R this pin is unused (the AL1663 variant assigns APWM here instead). |+| 2 | FB | input | Feedback voltage sensing input from the transformer auxiliary winding. Used for output voltage reflection sensing, OVP and constant-current regulation. FB CV threshold ~1.5 V; absolute max -0.3 to 7 V. |+| 3 | CS | input | Current sense pin. Connect to the source of the primary switch through a sense resistor Rcs. Cycle-by-cycle over-current clamp Vcs_ocp ~1.2 V; internal reference 0.3 V. Absolute max -0.3 to 7 V. |+| 4 | GND | power_in | Device ground reference for all internal circuitry and the gate driver return. |+| 5 | OUT | output | Gate driver output for the external primary-side power MOSFET. Output clamp voltage ~14 V (at Vcc=20 V); rise/fall times ~90/30 ns into 1 nF; absolute max -0.3 to 20 V. |+| 6 | VCC | power_in | Supply voltage for the gate driver and internal control circuits. Startup threshold Vcc_th ~18.5 V, minimum operating voltage Vopr_min ~7.8 V, Vcc OVP ~27 V. Absolute max -0.3 to 30 V. |+| 7 | COMP | passive | Loop compensation pin. External Rcomp/Ccomp network from COMP to GND sets loop dynamics and pre-charges Vcomp_st = 1.4 V − 700 µA·Rcomp at startup. |+| 8 | APWM | input | Analog dimming input or PWM signal input for PWM dimming mode. A 0.3-2.4 V DC selects analog dimming; a digital PWM signal selects PWM dimming. Vapwm_L max 0.3 V, Vapwm_H min 2.4 V; absolute max -0.3 to 7 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SO-8 |+| Category | LED-drv |+| Pins | 8 |++## Ordering variants++- `AL1663RS-13`++## CAD (KiCad official)++- Symbol: `AL1663RS-13`+- Footprint: `Package_SO:TI_SO-PowerPAD-8`+- 3D model: SO-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/AL1663RS-13.pdf) (15 pp, sha256 `fd7e0e59a41a7a6c`, 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/al1663rs-13-datasheet.pdf)

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