component
AL8843SP-13
Public Made by Adomby adom
Diodes Incorporated LED Drivers, SO-8-EP. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+48@@ -0,0 +1,48 @@+# AL8843SP-13++**Diodes Incorporated** · LED Drivers · SO-8-EP++AL8843SP-13 from Diodes Incorporated, in a SO-8-EP. 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 | GND | power_in | Ground of IC. Tie to system ground plane; internally connected to pin 2 and exposed pad. |+| 2 | GND | power_in | Ground of IC. Tie to system ground plane; internally connected to pin 1 and exposed pad. |+| 3 | SET | input | Set nominal output current pin. Connect resistor R_SET from this pin to VIN to define the nominal average output current. Mean current-sense threshold V_SET typ 100mV (96-104mV) with respect to VIN; I_SET typ 8µA. |+| 4 | NC | unconnected | No connection. Leave floating or tie to ground for best noise immunity. |+| 5 | CTRL | input | Multi-function On/Off and brightness control input. Leave floating for normal operation. Drive below 0.3V to shut down the power switch. Analog dim by applying 0.4V-2.5V DC (10%-100% of I_OUT_NOM); >2.6V gives 100%. Accepts PWM (low <0.3V, high >2.6V, edges <1µs). A capacitor from CTRL to GND increases soft-start time (default t_SS ≈ 0.1ms; adds ~1.5ms/nF). |+| 6 | VIN | power_in | Input supply voltage, 4.5V to 40V (abs max 42V). Decouple to ground with a 10µF or higher X7R ceramic capacitor placed close to the device. UVLO rising typ 3.9V with 250mV hysteresis. |+| 7 | SW | output | Switch node - drain of the internal 40V NDMOS high-side switch (R_ON typ 0.2Ω). Connect the inductor and freewheeling Schottky diode here, minimizing track length to reduce EMI. Internally tied to pin 8. |+| 8 | SW | output | Switch node - drain of the internal 40V NDMOS high-side switch. Connect the inductor and freewheeling Schottky diode here, minimizing track length to reduce EMI. Internally tied to pin 7. |+| EP | EP | power_in | Exposed pad / thermal tab. Connects to GND and to the PCB thermal mass for enhanced thermal impedance. Solder to a copper pour tied to ground. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SO-8-EP |+| Category | LED-drv |+| Pins | 9 |++## Ordering variants++- `AL8843SP-13`++## CAD (KiCad official)++- Symbol: `AL8843SP-13`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SO-8-EP (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/AL8843SP-13.pdf) (16 pp, sha256 `b544c47b8437fba0`, 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/al8843sp-13-datasheet.pdf)
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