# LM8342SD

**Texas Instruments** · LCD Drivers · WSON-10-EP(3x3)

LM8342SD from Texas Instruments, in a WSON-10-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 | OUT | output | Current sink output adjustable in 128 steps; full scale current range 5 µA to 100 µA |
| 2 | AVDD | power_in | Analog reference voltage input for DAC; operating range 4.5 V to 18 V |
| 3 | WPN | input | Write protect input active low; high level enables EEPROM access; includes internal pull-down resistor |
| 4 | WPP | output | Write protect signal output; logical inverse of WPN input signal |
| 5 | GND | power_in | Ground reference connection |
| 6 | VDD | power_in | Digital supply voltage; operating range 2.25 V to 3.6 V (2.6 V to 3.6 V when AVDD exceeds 13 V) |
| 7 | SDA | bidirectional | I2C compatible serial data line; maximum bus speed 400 kHz; open-drain output requires external pull-up resistor |
| 8 | SCL | bidirectional | I2C compatible serial clock line; maximum bus speed 400 kHz; open-drain output requires external pull-up resistor |
| 9 | SCL-S | input | Switched SCL connection for in-circuit PCB testing; connected to SCL when WPN is high; alternative clock source |
| 10 | SET | input | Maximum output current adjustment pin; connects to external RSET resistor to set full-scale current; typical values 10 kΩ to 45 kΩ |
| 11 | DAP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-10-EP(3x3) |
| Category | LED Drivers |
| Pins | 11 |

## CAD (KiCad official)

- Symbol: `LM8342SD`
- Footprint: `Package_SON:VSON-10-1EP_3x3mm_P0.5mm_EP1.2x2mm`
- 3D model: WSON-10-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `lm8342sd-etched.step` / `lm8342sd-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm8342sd.step` / `lm8342sd.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/lm8342) (23 pp, sha256 `833c80cc00d51a5d`, retrieved 2026-10-07, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/lm8342sd-datasheet.pdf)