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Name	Last commit message	Last updated
docs	lm2574m-5-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	3d ago
viewers	lm2574m-5-0: viewers · Ray	9d ago
lm2574m-5-0-etched.fit.json	lm2574m-5-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	3d ago
lm2574m-5-0-etched.glb	lm2574m-5-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	3d ago
lm2574m-5-0-etched.step	lm2574m-5-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray	3d ago
lm2574m-5-0.glb	Publish 0.1.0 · Ray	9d ago
lm2574m-5-0.kicad_mod	Publish 0.1.0 · Ray	9d ago
lm2574m-5-0.kicad_sym	Publish 0.1.0 · Ray	9d ago
lm2574m-5-0.lbr	Publish 0.1.0 · Ray	9d ago
lm2574m-5-0.step	Publish 0.1.0 · Ray	9d ago
package.json	Publish 0.1.0 · Ray	9d ago
page.json	Set visibility: public · Ray	9d ago
README.md	Initial commit: component/lm2574m-5-0 · Ray	9d ago

LM2574M-5.0

Texas Instruments · DC-DC Converters · SOIC-14

LM2574M-5.0 from Texas Instruments, in a SOIC-14. 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	No internal connection, but must be soldered to PCB for best heat transfer.
2	NC	unconnected	No internal connection, but must be soldered to PCB for best heat transfer.
3	FB	input	Feedback sense input pin to set VOUT for adjustable version or connect to output capacitor for fixed output versions.
4	SIG_GND	power_in	Signal ground pin providing ground reference for internal references and logic.
5	ON/OFF	input	Enable input with high = OFF and low = ON; connect to GND to enable or do not leave floating.
6	PWR_GND	power_in	Power ground pins to connect to system ground and capacitor ground pins with shortest possible path from VIN.
7	NC	unconnected	No internal connection, but must be soldered to PCB for best heat transfer.
8	NC	unconnected	No internal connection, but must be soldered to PCB for best heat transfer.
9	NC	unconnected	No internal connection, but must be soldered to PCB for best heat transfer.
10	VIN	power_in	Supply input pin to high-side transistor collector; connect to power supply and input bypass capacitors with shortest path to PWR_GND.
11	NC	unconnected	No internal connection, but must be soldered to PCB for best heat transfer.
12	OUTPUT	output	Emitter pin of the power transistor switching node; attach to inductor and external diode cathode.
13	NC	unconnected	No internal connection, but must be soldered to PCB for best heat transfer.
14	NC	unconnected	No internal connection, but must be soldered to PCB for best heat transfer.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-14
Category	Power Supply Chip
Pins	14

CAD (KiCad official)

Symbol: LM2574M-5.0
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D, STEP)
3D model files: lm2574m-5-0-etched.step / lm2574m-5-0-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2574m-5-0.step / lm2574m-5-0.glb are 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, primary claude-haiku-4-5-20251001 (text), consensus claude-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).

Datasheet PDF