TEXAS INSTRUMENTS LM2674MX -5.0/NOPB

Mfr. Part

LM2674MX-5.0/NOPB

Manufacturer

Luminary Micro/Texas Instruments

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Detailed Description

Simple Switcher non-synchronous buck (step-down) regulator with an internal power switch

Fixed 5.0 V output version of the LM2674 family

Delivers up to 0.5 A continuous load current with few external parts

Wide input voltage capability suited to 12 V and 24 V industrial rails

Typical fixed switching frequency around 260 kHz for compact magnetics

Integrated current limit and thermal shutdown for robust protection

Optimized for high efficiency with an external Schottky diode, inductor, and low ESR capacitors

Industry standard 8‑pin SOIC footprint for easy PCB layout and replacement

Key Features

Fixed 5.0 V regulated output

Up to 0.5 A output current

Wide input voltage range up to 40 V class operation typical for LM2674 family

Approx 260 kHz fixed frequency switching

High efficiency with proper external inductor and diode selection

Low standby current and enable pin for easy shutdown

Internal current limit and thermal shutdown

Requires only an inductor, catch diode, and input/output capacitors

Stable operation over a wide load range

Proven Simple Switcher topology with extensive application guidance

Key Advantages

Simple to design in thanks to fixed 5 V version and standard frequency

Handles noisy industrial supplies and automotive cranks within family voltage limits

Small solution size due to 260 kHz switching and SOIC-8 package

Reliable operation with built-in protections

Broad ecosystem of reference designs, magnetics suggestions, and application notes

Drop-in friendly within LM2674 family for different fixed voltages or adjustable variant

Packaging

Supply format MX indicates tape and reel for automated assembly

Package type 8‑pin SOIC commonly referred to as TI D package

Package code reference 590 per provided product parameters

Body size about 4.9 mm length x 3.9 mm width x 1.5 mm height typical for SOIC‑8

Lead pitch 1.27 mm with gull‑wing leads for SMT

Molding compound epoxy with copper leadframe, lead finish NOPB RoHS compliant and lead‑free

Pin functions typical for LM2674 family include VIN input, SW switch node, GND ground return, ON OFF enable, FB feedback used internally on fixed versions and externally on adjustable version details and exact pin numbers per datasheet

Thermal characteristics typical of SOIC‑8 natural convection Theta JA varies widely with PCB copper 90 to 150 C W class use thermal vias and copper pour on GND and SW as recommended check datasheet graphs

Electrical characteristics highlights fixed 5.0 V output up to 0.5 A load 260 kHz switching wide input capability up to 40 V class for the family ripple and transient performance depend on external LC filter selection refer to datasheet design curves

Lifecycle

Current status generally active within Texas Instruments Simple Switcher portfolio not known to be at immediate end of life

Not nearing discontinuation to the best of public knowledge

Equivalent or alternative models detailed suggestions

- TI LM2674M-5.0 NOPB same function in SOIC‑8 cut tape variant

- TI LM2674N-5.0 NOPB alternative package family member check package and pinout

- TI LM2674M-ADJ NOPB adjustable output version if a non‑5 V output is needed

- TI LM2675M-5.0 NOPB higher current 1 A same 260 kHz family similar design approach not drop‑in

- TI LM2594N-5.0 0.5 A 150 kHz legacy alternative different package and frequency not drop‑in

- TI LMR14050 0.5 A modern 40 V buck family including automotive Q1 versions not drop‑in

- TI TPS62175 500 mA synchronous buck for higher efficiency at light load lower VIN range not drop‑in

If you need exact drop‑in replacements or functional equivalents matched to your PCB and compliance needs please contact our sales team via the Y‑IC website for a tailored cross list

Key Application Areas

12 V or 24 V industrial to 5 V rails for PLCs sensors HMIs and control modules

Automotive 12 V accessory to 5 V infotainment and telematics systems non‑safety uses check AEC needs

Communications equipment 5 V logic rails from higher backplane voltages

Building automation security access control and smart lighting 5 V logic and RF modules

Test and measurement instruments local 5 V regulation from bulk supplies

Embedded controllers MCUs FPGAs and mixed‑signal boards needing a robust 5 V rail

Datasheet

Y‑IC provides the most authoritative datasheet for this product model on our product page

We recommend you download the datasheet from our site now for exact pinout limits design equations PCB layout and thermal guidance

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