LP3321B6F

@@ -0,0 +1,46 @@+# LP3321B6F++**LOWPOWER** · LED Drivers · SOT-23-6++LP3321B6F from LOWPOWER, in a SOT-23-6. 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 | LX | output | Output switching node (drain of the internal 1.5A N-MOSFET). Connects to the boost inductor and Schottky diode. Absolute max -0.3V to 46V; internal RDS(on) ~400 mOhm; 1.0MHz switching. |+| 2 | GND | power_in | Device ground. Must be connected to a strong ground plane for heat sinking and noise protection. |+| 3 | FB | input | Feedback reference voltage pin. Connect a current-sense resistor between the LED string cathode and GND; the internal reference regulates this pin to 200mV (ILED = 200mV / R1). Feedback input current ~50nA. Abs max -0.3V to 46V. |+| 4 | EN | input | Chip enable (active high) and PWM dimming input. High impedance; requires a ~100k pull-down to GND when the control signal may be floating. VIL <= 0.4V, VIH >= 1.4V. Accepts PWM dimming from 200Hz to 200kHz (down to 1% duty cycle with PWM < 50kHz). |+| 5 | NC | unconnected | No connect. Leave floating or tie to GND per layout preference. |+| 6 | VIN | power_in | Supply input voltage pin, 2.5V to 5.5V operating range (abs max 6.5V). Bypass with a 1uF (or 10uF as shown in the typical application) ceramic capacitor close to the pin to reduce input noise. UVLO ~2.3V with 0.25V hysteresis. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | LOWPOWER |+| Package | SOT-23-6 |+| Category | LED-drv |+| Pins | 6 |++## Ordering variants++- `LP3321B6FB6F`+- `LP3321B6FQVF`++## CAD (KiCad official)++- Symbol: `LP3321B6F`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [LOWPOWER datasheet](docs/lp3321b6f-datasheet.pdf) (9 pp, sha256 `86792229b56b7ee6`, 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/lp3321b6f-datasheet.pdf)

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