Texas Instruments LM25085MYX/NOPB

Mfr. Part

LM25085MYX/NOPB

Manufacturer

Luminary Micro Texas Instruments

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Detailed Description

High-voltage non-synchronous buck controller that drives an external power MOSFET to step down 4.5 V to 42 V inputs to a lower positive output. Operates up to 1 MHz, supports 100 percent duty cycle for low dropout, and includes current limit and frequency control. Compact 8-HVSSOP package for space-constrained, thermally aware designs. RoHS3 compliant.

Key Features

Wide input voltage range 4.5 V to 42 V

Buck topology step-down controller

Drives external power MOSFET transistor driver output type

Non-synchronous architecture for simple, low-cost power stage

Switching frequency up to 1 MHz adjustable

100 percent maximum duty cycle for near-dropout operation

Single output phase 1 output channel

Current limit and frequency control integrated

Positive output configuration

Clock synchronization not required or supported

Industrial temperature range minus 40 C to 125 C junction

Surface-mount 8-HVSSOP MSOP PowerPAD package

RoHS3 compliant lead-free NoPb finish

Key Advantages

Handles wide input rails common in 12 V, 24 V, and 36 V battery or industrial systems

High duty cycle capability maintains regulation during input sag or at low headroom

External MOSFET lets you scale current, efficiency, and cost for your design

Up to 1 MHz operation enables smaller inductors and capacitors to save board area

Simple non-synchronous power stage reduces component count and BOM cost

Robust thermal performance with exposed pad for better heat dissipation

Proven TI platform with broad ecosystem and documentation

Packaging

Shipping format Tape and Reel TR for automated assembly

Package case 8-HVSSOP also known as 8-MSOP PowerPAD approximately 3.00 mm 0.118 in body width

Mounting Surface-mount gull‑wing leads typical 0.65 mm pitch

Material Leadframe copper alloy with matte tin lead finish lead-free and RoHS3 compliant

Thermal Exposed thermal pad on package underside recommended to be soldered to a PCB copper pad with thermal vias for low thermal resistance and improved heat spreading

Pin configuration 8 leads total including controller I O pins and gate drive pin see datasheet for exact pinout and recommended layout

Electrical properties at package level Optimized for low parasitic inductance short gate-drive loop encouraged by compact HVSSOP footprint for clean switching and reduced EMI

Lifecycle

Status Active in production based on current market information. Not near discontinuation to the best of our knowledge. Availability can vary by region and forecast. Check live status on our website or contact Y-IC sales for confirmation.

Equivalent or alternative models within TI for similar use cases

- LM5088-1 and LM5088-2 high-voltage non-synchronous buck controllers wider input range, feature variants

- TPS40210 and TPS40211 non-synchronous buck controllers 4.5 V to 52 V input

- LM25085 family variants base number LM25085 different package and ordering codes may exist

If you need pin‑to‑pin or spec‑to‑spec cross suggestions beyond these examples please contact our sales team on the Y-IC website for a detailed, project‑specific cross list.

Key Application Areas

Industrial and factory automation 24 V systems stepping down to 12 V, 5 V, or 3.3 V rails

Battery‑powered equipment 12 V and 24 V automotive and transportation accessory rails

Communications and networking equipment with 12 V front ends generating local point‑of‑load rails

Building controls, security systems, and smart meters

Test and measurement instruments and embedded controllers

White goods and appliance control boards with wide input supply variation

Datasheet

Y-IC provides the most authoritative and up‑to‑date datasheet for LM25085MYX/NOPB on our product page. We strongly recommend downloading the datasheet here for full electrical characteristics, pin functions, application notes, and layout guidance.

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