# LM3414HVSD

**Texas Instruments** · LED Drivers · WSON-8-EP(3x3)

LM3414HVSD from Texas Instruments, in a WSON-8-EP(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VCC | power_out | Internal regulator output that should be bypassed to ground with a ceramic capacitor of at least 1 µF. |
| 2 | PGND | power_in | Power ground and reference point for all stated voltages, which must be externally connected to EP and GND. |
| 3 | IADJ | input | Average output current adjustment pin; connect resistor RIADJ from this pin to ground to set the average LED current, with IADJ to GND limited to -0.3 V to 5 V. |
| 4 | GND | power_in | Analog ground for internal circuitry, which must be connected to PGND external to the package. |
| 5 | FS | input | Switching frequency setting pin; connect resistor RFS from this pin to ground to set the switching frequency between 250 kHz and 1000 kHz, with FS to GND limited to -0.3 V to 5 V. |
| 6 | DIM | input | PWM dimming control pin where a logic-level PWM signal sets the LED string brightness, with DIM to GND limited to -0.3 V to 6 V. |
| 7 | LX | output | Drain of the internal N-channel MOSFET switch that connects to the output inductor and the Schottky diode anode, with LX to PGND rated -0.3 V to 42 V (LM3414) or -0.3 V to 65 V (LM3414HV) and -3 V for 2 ns transients. |
| 8 | VIN | power_in | Input voltage pin that should be operated between 4.5 V and 42 V (LM3414) or 4.5 V and 65 V (LM3414HV). |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-8-EP(3x3) |
| Category | LED Drivers |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `LM3414HVSD`
- Footprint: `Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm`
- 3D model: WSON-8-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `lm3414hvsd-etched.step` / `lm3414hvsd-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm3414hvsd.step` / `lm3414hvsd.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm3414) (35 pp, sha256 `50a54d53a0e6ecb0`, retrieved 2026-10-10, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/lm3414hvsd-datasheet.pdf)