component
TPS5431DDAR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SO-8. 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
markdownTPS5431DDAR
Texas Instruments · DC-DC Converters · SO-8
TPS5431DDAR from Texas Instruments, in a SO-8. 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 | BOOT | output | Bootstrap capacitor output for high-side MOSFET gate driver; connect 0.01µF low-ESR ceramic capacitor between BOOT and PH pins. |
| 2 | NC | unconnected | Internally unconnected. |
| 3 | NC | unconnected | Internally unconnected. |
| 4 | VSENSE | input | Feedback voltage input connected to output voltage divider; VSENSE pin voltage must equal 1.221V internal reference for proper regulation. |
| 5 | ENA | input | Enable/disable control input; device stops switching below 0.5V and begins switching above 1.3V with 325mV hysteresis; internal 1.5MΩ pull-up allows floating operation. |
| 6 | GND | power_in | Ground reference connected to exposed thermal pad DAP for proper operation and thermal dissipation. |
| 7 | VIN | power_in | Input supply voltage (5.5V to 23V for TPS5431); bypass to GND within 1mm with 4.7µF minimum low-ESR ceramic capacitor. |
| 8 | PH | output | Switching output (high-side MOSFET source) for connection to external inductor, freewheeling diode, and BOOT capacitor; steady-state voltage range -0.6V to 25V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SO-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
TPS5431DDAR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files:
tps5431ddar-etched.step/tps5431ddar-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps5431ddar.step/tps5431ddar.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (40 pp, sha256
b0f082c6bf7e36a7, retrieved 2026-09-27, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).