component
LM2591HVSX-ADJ
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TO-263-5. 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
markdownLM2591HVSX-ADJ
Texas Instruments · DC-DC Converters · TO-263-5
LM2591HVSX-ADJ from Texas Instruments, in a TO-263-5. 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 | +VIN | power_in | Positive input supply for the IC switching regulator; requires suitable input bypass capacitor to minimize voltage transients and supply switching currents. |
| 2 | Output | output | Internal switch output with voltage switching between approximately (+VIN − VSAT) and −0.5 V at duty cycle VOUT/VIN. |
| 3 | Ground | power_in | Circuit ground. |
| 4 | Feedback | input | Feedback pin senses regulated output voltage; set to 1.23 V by resistive divider from output for Adjustable version; requires small-signal Schottky diode to ground if VIN > 40 V when feedforward capacitor is present. |
| 5 | ON/OFF | input | ON/OFF control pin for shutdown mode (≥2 V) or normal operation (≤0.6 V or floating); typical threshold 1.3 V; voltage must not exceed 25 V. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-263-5 |
| Category | Power Management (PMIC) |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
LM2591HVSX-ADJ - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2591hvsx-adj-etched.step/lm2591hvsx-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2591hvsx-adj.step/lm2591hvsx-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (32 pp, sha256
21d049ba3779235d, retrieved 2026-09-26, tier: lcsc) - 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).