# LM2736YMKX

**Texas Instruments** · DC-DC Converters · TSOT-23-6

LM2736YMKX from Texas Instruments, in a TSOT-23-6. 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 | BOOST | input | Boost voltage that drives the internal NMOS control switch; a bootstrap capacitor is connected between the BOOST and SW pins. |
| 2 | GND | power_in | Signal and power ground pin; place the bottom resistor of the feedback network as close as possible to this pin for accurate regulation. |
| 3 | FB | input | Feedback pin; connect FB to the external resistor divider to set output voltage. |
| 4 | EN | input | Enable control input; logic high enables operation and this pin must not be allowed to float or exceed VIN + 0.3 V. |
| 5 | VIN | power_in | Input supply voltage pin in the 3.0 V to 18 V range; connect a bypass capacitor to this pin. |
| 6 | SW | output | Output switch; connects to the inductor, catch diode, and bootstrap capacitor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `LM2736YMKX`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-6`
- 3D model: TSOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `lm2736ymkx-etched.step` / `lm2736ymkx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2736ymkx.step` / `lm2736ymkx.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/lm2736) (37 pp, sha256 `adf1c5a775dcaa6f`, 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/lm2736ymkx-datasheet.pdf)