component
LM2575SX-ADJ
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TO-263-5. Datasheet-verified pinout, 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
markdownLM2575SX-ADJ
Texas Instruments · DC-DC Converters · TO-263-5
LM2575SX-ADJ from Texas Instruments, in a TO-263-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | power_in | Unregulated DC input supply to the regulator; operating supply voltage range is up to 40V (Operating Ratings) with an absolute maximum of 45V for the LM2575, and a minimum 47µF electrolytic bypass capacitor located near this pin and the ground pin is required for stable operation. |
| 2 | OUTPUT | output | Internal power-switch output pin that drives the external catch diode/inductor network; provides cycle-by-cycle current limiting with a 2.2A typical (1.7A-3.0A limit range) peak switch current, 0.9V typical (1.2V/1.4V max) saturation voltage at 1A, and a steady-state output-to-ground voltage limited to −1V minimum per the Absolute Maximum Ratings. |
| 3 | GND | power_in | Power ground return pin providing the common low-impedance ground reference for the regulator; for the equivalent 5-lead TO-220 package the datasheet states this pin and the package tab are both ground and part of the same copper lead frame, so either connection may be used. |
| 4 | FEEDBACK | input | Feedback input to the internal error amplifier; for the Adjustable version it must be connected to the external R1/R2 resistor divider (R1 between 1kΩ and 5kΩ) that sets VOUT, referenced to a 1.230V typical feedback voltage (1.180V-1.286V over line/load/temperature limits) with 50nA typical (up to 500nA max) bias current, and should be routed with short traces located near the regulator to avoid noise pickup. |
| 5 | ON/OFF | input | TTL/CMOS-compatible shutdown control input; ground or drive low (typically below 1.6V, VIL max 1.0V/0.8V) for normal ON operation, or drive high (VIH min 1.4V/2.2V-2.4V) to place the device in low-power standby mode drawing 50µA typical (200µA/500µA max) standby quiescent current; this pin can be pulled up to +VIN without a series resistor and must not be left floating. |
| 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:
LM2575SX-ADJ - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2575sx-adj-etched.step/lm2575sx-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2575sx-adj.step/lm2575sx-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (46 pp, sha256
67d18983ac3edb34, retrieved 2026-09-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).