# LM2854MH-500

**Texas Instruments** · DC-DC Converters · HTSSOP-16-EP

LM2854MH-500 from Texas Instruments, in a HTSSOP-16-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 | Reserved for factory use; this pin should be connected to GND to ensure proper operation. |
| 2 | PGND | power_in | Power ground for the internal power switches; connect together locally at the device and to the PC board ground plane. |
| 3 | PGND | power_in | Power ground for the internal power switches; connect together locally at the device and to the PC board ground plane. |
| 4 | PGND | power_in | Power ground for the internal power switches; connect together locally at the device and to the PC board ground plane. |
| 5 | PVIN | power_in | Input voltage to the internal power switches, specified from 2.95 V to 5.5 V to GND; place a low-ESR input capacitor as close as possible to these pins. |
| 6 | PVIN | power_in | Input voltage to the internal power switches, specified from 2.95 V to 5.5 V to GND; connect together at the device with pins 5 and 7. |
| 7 | PVIN | power_in | Input voltage to the internal power switches, specified from 2.95 V to 5.5 V to GND; connect together at the device with pins 5 and 6. |
| 8 | NC | unconnected | Reserved for factory use; this pin should be connected to GND to ensure proper operation. |
| 9 | NC | unconnected | Reserved for factory use; this pin should be connected to GND to ensure proper operation. |
| 10 | AVIN | power_in | Analog input supply that generates the internal bias and feeds the UVLO circuit; if it falls below the UVLO threshold both internal FETs turn off, and TI recommends a 1 Ω series RC filter from PVIN with a 0.1 µF to 1 µF X7R bypass capacitor. |
| 11 | EN | input | Active-high enable input with typical turn-on threshold of 1.23 V and 0.15 V hysteresis; connect to PVIN if not used. |
| 12 | SW | output | Switch node, the PWM output of the internal MOSFET power switches; tie together locally with pin 13 and connect to the filter inductor. |
| 13 | SW | output | Switch node, the PWM output of the internal MOSFET power switches; tie together locally with pin 12 and connect to the filter inductor. |
| 14 | SS | bidirectional | Soft-start control; an internal 2 µA current source charges an external capacitor to AGND to set the start-up ramp rate, and the pin can also configure the tracking feature. |
| 15 | AGND | power_in | Quiet analog ground for the internal bias circuitry. |
| 16 | FB | input | Feedback input to the inverting input of the voltage-loop error amplifier, which compares against the 0.8 V bandgap reference on its non-inverting input. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HTSSOP-16-EP |
| Category | Power Supply Chip |
| Pins | 17 |

## CAD (KiCad official)

- Symbol: `LM2854MH-500`
- Footprint: `Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm`
- 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files: `lm2854mh-500-etched.step` / `lm2854mh-500-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2854mh-500.step` / `lm2854mh-500.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/lm2854) (36 pp, sha256 `c4a92a4d02e35926`, retrieved 2026-10-12, 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/lm2854mh-500-datasheet.pdf)