component
LM2574N-5.0
Public Made by Adomby adom
Texas Instruments DC-DC Converters, DIP-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
markdownLM2574N-5.0
Texas Instruments · DC-DC Converters · DIP-8
LM2574N-5.0 from Texas Instruments, in a DIP-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 | FB | input | Feedback sense input pin. Connect to the midpoint of feedback divider to set VOUT for adjustable version or connect this pin directly to the output capacitor for fixed output version. |
| 2 | SIG_GND | power_in | Signal ground pin. Ground reference for internal references and logic. Connect to system ground. |
| 3 | ON/OFF | input | Enable input to the voltage regulator; high = OFF and low = ON. Connect to GND to enable the voltage regulator. Do not leave this pin float. |
| 4 | PWR_GND | power_in | Power ground pin. Connect to system ground and signal ground pins of CIN and COUT. Path to CIN must be as short as possible. |
| 5 | VIN | power_in | Supply input pin to collector pin of high-side transistor. Connect to power supply and input bypass capacitors CIN. Path from VIN pin to high-frequency bypass CIN and PWR_GND must be as short as possible. |
| 6 | NC | unconnected | No internal connection, but must be soldered to PCB for best heat transfer. |
| 7 | OUTPUT | output | Emitter pin of the power transistor. This is a switching node. Attach this pin to an inductor and the cathode of the external diode. |
| 8 | NC | unconnected | No internal connection, but must be soldered to PCB for best heat transfer. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | DIP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM2574N-5.0 - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files:
lm2574n-5-0-etched.step/lm2574n-5-0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2574n-5-0.step/lm2574n-5-0.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (42 pp, sha256
61a9f44cec6689e8, 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).