# LP3310B6F

**LOWPOWER** · AC-DC Controllers And Regulators · SOT-23-6

LP3310B6F 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 100mΩ, 4A N-MOSFET switch. Connects to the boost inductor and Schottky diode. Absolute maximum voltage -0.3V to 33V. |
| 2 | GND | power_in | Ground pin. Should be connected to a strong ground plane for heat sinking and noise protection. |
| 3 | FB | input | Feedback reference voltage pin. Series-connect a current sense resistor between the WLED string and ground; feedback voltage is regulated to 250mV typ (240-260mV). ILED = 250mV / R1. Feedback input current typ 50nA. |
| 4 | EN | input | Chip enable (active high) and PWM dimming input. VIH=1.4V min, VIL=0.4V max. High-impedance pin - connect a 100kΩ pull-down to GND when the control signal may float. Accepts PWM dimming from 100Hz to 100kHz down to 1% duty cycle. Also triggers over-voltage-protection sensing. |
| 5 | NC | unconnected | No connect. Leave floating or tie as convenient for PCB routing. |
| 6 | VIN | power_in | Supply input voltage pin. Operating range 2.7V to 24V; absolute maximum 30V. Bypass with a 1uF (10uF recommended in typ. application) ceramic capacitor to GND to reduce input noise. UVLO 2.5V typ with 0.3V hysteresis. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LOWPOWER |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## Ordering variants

Same part, different packaging or reel option.

- `LP3310B6F`
- `LP3310B6FQVF`

## CAD (KiCad official)

- Symbol: `LP3310B6F`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `lp3310b6f-etched.step` / `lp3310b6f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lp3310b6f.step` / `lp3310b6f.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [LOWPOWER datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588903994479951873) (9 pp, sha256 `bc3c58dac4759412`, 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/lp3310b6f-datasheet.pdf)