# LM2853MH-3.3

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

LM2853MH-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 | Supplies the control circuitry and is specified for 3 V to 5.5 V to GND. |
| 2 | EN | input | Enable input with an absolute maximum rating of -0.3 V to 6 V. |
| 3 | SGND | power_in | Low-noise ground for the control circuitry, which must be tied together with all other ground connections. |
| 4 | SS | passive | Soft-start pin with an absolute maximum rating of -0.3 V to 6 V. |
| 5 | NC | unconnected | No connect pin that must be tied to ground. |
| 6 | PVIN | power_in | Supplies the power FETs and is specified for 1.5 V to 5.5 V to GND, with PVIN required to be less than or equal to AVIN. |
| 7 | PVIN | power_in | Supplies the power FETs and is specified for 1.5 V to 5.5 V to GND, with PVIN required to be less than or equal to AVIN. |
| 8 | SW | output | Switch node pin, monitored by the switch-node protection circuitry, with an absolute maximum rating of -0.3 V to 6 V. |
| 9 | SW | output | Switch node pin, monitored by the switch-node protection circuitry, with an absolute maximum rating of -0.3 V to 6 V. |
| 10 | PGND | power_in | Power ground for the power FETs, which must be tied together with all other ground connections. |
| 11 | PGND | power_in | Power ground for the power FETs, which must be tied together with all other ground connections. |
| 12 | NC | unconnected | No-connect pin that must be tied to ground. |
| 13 | NC | unconnected | No-connect pin that must be tied to ground. |
| 14 | SNS | input | Output voltage sense pin that should be connected as close to the load as possible, with an absolute maximum rating of -0.3 V to 6 V. |
| 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 Management (PMIC) |
| Pins | 15 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VOUT voltage tolerance (VOUT = 3.3 V option) | VOUT | 3.2257 | 3.3 | 3.3743 | V | TJ = -40°C to 125°C | 5 |
| VIN line regulation (VOUT = 3 V or 3.3 V) | ΔVOUT/ΔA |  | 0.2 | 1.1 | % | 3.5 V ≤ AVIN ≤ 5.5 V, TJ = -40°C to 125°C | 5 |
| UVLO threshold rising (AVIN) | VON | 2.47 |  | 3 | V | TJ = -40°C to 125°C | 5 |
| UVLO falling hysteresis (AVIN) |  | 50 | 155 | 260 | mV | TJ = -40°C to 125°C | 5 |
| PFET on resistance | RDS(ON)-P | 40 |  | 120 | mΩ | Isw = 3A, TJ = -40°C to 125°C | 5 |
| NFET on resistance | RDS(ON)-N | 32 |  | 100 | mΩ | Isw = 3A, TJ = -40°C to 125°C | 5 |
| Peak current limit threshold | ICL | 3.6 |  | 5 | A |  | 5 |
| Operating current | IQ | 0.85 |  | 2 | mA | Non-switching, TJ = -40°C to 125°C | 5 |
| Shutdown quiescent current | ISD | 12 |  | 50 | µA | EN = 0 V, TJ = -40°C to 125°C | 5 |
| Switching frequency | fosc | 325 | 550 | 725 | kHz | TJ = -40°C to 125°C | 5 |
| Duty cycle range | Drange | 0 |  | 100 | % | TJ = -40°C to 125°C | 5 |
| EN pin minimum high input | VIH | 75 |  |  | % of AVIN | TJ = -40°C to 125°C | 5 |
| EN pin maximum low input | VIL |  |  | 25 | % of AVIN | TJ = -40°C to 125°C | 5 |
| Pin voltage (AVIN, PVIN, EN, SNS, SW, SS) |  | -0.3 |  | 6 | V |  | 4 |
| Maximum junction temperature | TJ |  |  | 150 | °C |  | 4 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 4 |
| PVIN to GND input voltage |  | 1.5 |  | 5.5 | V |  | 4 |
| AVIN to GND input voltage |  | 3 |  | 5.5 | V |  | 4 |
| Operating junction temperature | TJ | -40 |  | 125 | °C |  | 4 |
| Junction-to-ambient thermal resistance | RθJA |  | 38 |  | °C/W | PWP (HTSSOP) 14-pin package | 4 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | Abs |  | V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2 kV (1) Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Range ind | 4 |

## CAD (KiCad official)

- Symbol: `LM2853MH-3.3`
- Footprint: `Package_SO:TSSOP-14-1EP_4.4x5mm_P0.65mm`
- 3D model: HTSSOP-14-EP (KiCad packages3D, STEP)
- 3D model files: `lm2853mh-3-3-etched.step` / `lm2853mh-3-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2853mh-3-3.step` / `lm2853mh-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/lit/ds/symlink/lm2853.pdf) (26 pp, sha256 `44527cfac656043f`, retrieved 2026-11-05, tier: manufacturer)
- **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-3-3-datasheet.pdf)