# LM2852YMXAX-3.3

**Texas Instruments** · DC-DC Converters · HTSSOP-14-EP

LM2852YMXAX-3.3 from Texas Instruments, in a HTSSOP-14-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 | AVIN | power_in | Chip bias input that supplies power to the chip's logic; connect to the input voltage or a separate rail. |
| 2 | EN | input | Enable input: connect to ground to disable the chip, or connect to AVIN or leave floating to enable it, since it is internally pulled up. |
| 3 | SGND | power_in | Signal ground for the control circuitry; all ground connections must be tied together per the layout guidelines. |
| 4 | SS | passive | Soft-start pin that connects to a small capacitor to control startup; the soft-start capacitance is restricted to 1 nF to 50 nF. |
| 5 | NC | unconnected | No connect; must be tied to ground or left floating in the application. |
| 6 | PVIN | power_in | Input supply pin connected to the input voltage and to the source of the internal power PFET. |
| 7 | PVIN | power_in | Input supply pin connected to the input voltage and to the source of the internal power PFET. |
| 8 | SW | output | Switch pin; connect to the output inductor. |
| 9 | SW | output | Switch pin; connect to the output inductor. |
| 10 | PGND | power_in | Power ground; connect to an internal ground plane or other large ground plane. |
| 11 | PGND | power_in | Power ground; connect to an internal ground plane or other large ground plane. |
| 12 | NC | unconnected | No connect; must be tied to ground or left floating in the application. |
| 13 | NC | unconnected | No connect; must be tied to ground or left floating in the application. |
| 14 | SNS | input | Output voltage sense pin; connect to the output voltage as close to the load as possible. |
| 15 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HTSSOP-14-EP |
| Category | Power Supply Chip |
| Pins | 15 |

## CAD (KiCad official)

- Symbol: `LM2852YMXAX-3.3`
- Footprint: `Package_SO:TSSOP-14-1EP_4.4x5mm_P0.65mm`
- 3D model: HTSSOP-14-EP (KiCad packages3D, STEP)
- 3D model files: `lm2852ymxax-3-3-etched.step` / `lm2852ymxax-3-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2852ymxax-3-3.step` / `lm2852ymxax-3-3.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/lm2852) (31 pp, sha256 `a151270f4e87c234`, 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/lm2852ymxax-3-3-datasheet.pdf)