# LM2853MH-1.5

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

LM2853MH-1.5 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 | Input voltage for the control circuitry; AVIN to GND is specified at 3 V to 5.5 V and PVIN must always be equal to or less than AVIN. |
| 2 | EN | input | Enable input with an internal pullup, so the device is automatically enabled unless an external enable voltage is applied; VIH is 75% of AVIN minimum and VIL is 25% of AVIN maximum. |
| 3 | SGND | power_in | Low-noise ground for the control circuitry, which must be tied together with the other ground connections on a broad ground plane. |
| 4 | SS | passive | Soft-start pin connected to the reference voltage node with 20 pF of internal capacitance; an external soft-start capacitor between 1 nF and 50 nF is recommended. |
| 5 | NC | unconnected | No connect pin that the datasheet states must be tied to ground. |
| 6 | PVIN | power_in | Input voltage for the power circuitry; PVIN to GND is specified at 1.5 V to 5.5 V. |
| 7 | PVIN | power_in | Input voltage for the power circuitry; PVIN to GND is specified at 1.5 V to 5.5 V. |
| 8 | SW | output | Switch node connected to the output inductor; it should be connected with a short, wide trace to limit losses and EMI. |
| 9 | SW | output | Switch node connected to the output inductor; it should be connected with a short, wide trace to limit losses and EMI. |
| 10 | PGND | power_in | Power ground for the output power FETs, which must be tied together with all other ground connections. |
| 11 | PGND | power_in | Power ground for the output power FETs, which must be tied together with all other ground connections. |
| 12 | NC | unconnected | No-connect pin that the datasheet states must be tied to ground. |
| 13 | NC | unconnected | No-connect pin that the datasheet states must be tied to ground. |
| 14 | SNS | input | Output voltage sense pin, which should be connected as close to the load as possible and away from high dV/dt or dI/dt nodes such as the switch node. |
| 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: `LM2853MH-1.5`
- Footprint: `Package_SO:TSSOP-14-1EP_4.4x5mm_P0.65mm`
- 3D model: HTSSOP-14-EP (KiCad packages3D, STEP)
- 3D model files: `lm2853mh-1-5-etched.step` / `lm2853mh-1-5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2853mh-1-5.step` / `lm2853mh-1-5.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/lm2853) (26 pp, sha256 `2e1d0a460160f6e1`, 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/lm2853mh-1-5-datasheet.pdf)