component
LM2854MHX-500
Public Made by Adomby adom
Texas Instruments DC-DC Converters, HTSSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM2854MHX-500
Texas Instruments · DC-DC Converters · HTSSOP-16-EP
LM2854MHX-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; the datasheet says this pin should be connected to GND to ensure proper operation. |
| 2 | PGND | power_in | Power ground pin for the internal power switches; connect it locally to the other PGND pins and to the PC board ground plane. |
| 3 | PGND | power_in | Power ground pin for the internal power switches; connect it locally to the other PGND pins and to the PC board ground plane. |
| 4 | PGND | power_in | Power ground pin for the internal power switches; connect it locally to the other PGND pins and to the PC board ground plane. |
| 5 | PVIN | power_in | Input voltage to the internal power switches, specified at 2.95 V to 5.5 V to GND; place a low-ESR input capacitor as close as possible to these pins and tie PVIN pins 5, 6 and 7 together. |
| 6 | PVIN | power_in | Input voltage to the internal power switches, specified at 2.95 V to 5.5 V to GND; place a low-ESR input capacitor as close as possible to these pins and tie PVIN pins 5, 6 and 7 together. |
| 7 | PVIN | power_in | Input voltage to the internal power switches, specified at 2.95 V to 5.5 V to GND; place a low-ESR input capacitor as close as possible to these pins and tie PVIN pins 5, 6 and 7 together. |
| 8 | NC | unconnected | Reserved for factory use; the datasheet says this pin should be connected to GND to ensure proper operation. |
| 9 | NC | unconnected | Reserved for factory use; the datasheet says this pin should be connected to GND to ensure proper operation. |
| 10 | AVIN | power_in | Analog supply that generates the internal bias and feeds the UVLO circuit, which turns both FETs off when AVIN falls below the UVLO threshold; TI recommends a 1 Ω series resistor from PVIN and a 0.1 µF to 1 µF X7R bypass capacitor. |
| 11 | EN | input | Active-high enable input with a typical turn-on threshold of 1.23 V and 0.15 V hysteresis; connect it to PVIN if not used. |
| 12 | SW | output | PWM output of the internal MOSFET power switches that must be tied together locally and connected to the filter inductor. |
| 13 | SW | output | PWM output of the internal MOSFET power switches that must be tied together locally and connected to the filter inductor. |
| 14 | SS | bidirectional | Soft-start and tracking pin; an internal 2 µA current source charges an external capacitor to AGND to set the output start-up ramp rate. |
| 15 | AGND | power_in | Quiet analog ground for the internal bias circuitry, electrically tied to PGND on the PC board as GND. |
| 16 | FB | input | Feedback input to the inverting input of the voltage error amplifier, which compares against the 0.8 V bandgap reference. |
| 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:
LM2854MHX-500 - Footprint:
Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm - 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files:
lm2854mhx-500-etched.step/lm2854mhx-500-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2854mhx-500.step/lm2854mhx-500.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (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, primaryclaude-haiku-5-5(text), consensusclaude-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).