# LM2735YMY

**Texas Instruments** · DC-DC Converters · MSOP-8-EP

LM2735YMY from Texas Instruments, in a MSOP-8-EP. 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 | NC | unconnected | No-connect pin on the MSOP-PowerPAD package; it is not used by the regulator. |
| 2 | PGND | power_in | Power ground pin; place PGND and the output capacitor ground close together. |
| 3 | VIN | power_in | Supply voltage for the power stage and input supply; recommended operating range is 2.7 V to 5.5 V, with absolute maximum of 7 V. |
| 4 | EN | input | Shutdown control input where logic high enables operation; do not let this pin float or exceed VIN + 0.3 V. |
| 5 | FB | input | Feedback pin; connect to an external resistor divider to set the output voltage (absolute maximum 3 V). |
| 6 | AGND | power_in | Signal ground pin; place the bottom resistor of the feedback network as close as possible to this pin and to pin 5 (FB). |
| 7 | SW | output | Output switch pin; connect to the inductor and output diode (absolute maximum 26.5 V). |
| 8 | NC | unconnected | No-connect pin on the MSOP-PowerPAD package; it is not used by the regulator. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | MSOP-8-EP |
| Category | Power Management (PMIC) |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `LM2735YMY`
- Footprint: `Package_SO:MSOP-8-1EP_3x3mm_P0.65mm_EP1.5x1.8mm`
- 3D model: MSOP-8-EP (KiCad packages3D, STEP)
- 3D model files: `lm2735ymy-etched.step` / `lm2735ymy-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2735ymy.step` / `lm2735ymy.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/lm2735) (61 pp, sha256 `239b85cbe37a1668`, retrieved 2026-10-08, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/lm2735ymy-datasheet.pdf)