Texas Instruments LM27342MY/NOPB

Mfr. Part

LM27342MY/NOPB

Manufacturer

Luminary Micro Texas Instruments

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Detailed Description

LM27342MY/NOPB is a high efficiency step-down DC DC switching regulator. It delivers up to 2 A output current from a wide 3 V to 20 V input range, with an adjustable output from 1 V to 18 V. It switches at 2 MHz to enable very small inductors and capacitors, saving board space. It is a non-synchronous buck regulator, so it uses an external Schottky diode for the freewheel path. The device is housed in a compact 10-MSOP PowerPAD package with an exposed pad for improved thermal performance. It is RoHS3 compliant and supports operation over a -40 C to 125 C junction temperature range. Designed for single positive output rails, it offers one adjustable output channel suitable for point-of-load regulation in space-constrained systems.

Key Features

Wide input voltage 3 V to 20 V

Adjustable output voltage 1 V to 18 V

2 A continuous output current

High switching frequency 2 MHz for small external components

Buck topology with positive output configuration

Non-synchronous rectification external Schottky diode required

Single output channel

Surface mount package with exposed thermal pad

RoHS3 compliant

Operating junction temperature range -40 C to 125 C

Key Advantages

Compact design high frequency allows smaller inductors and capacitors, reducing solution size and height

Flexible output range supports many rails from 1 V logic to 12 V and beyond up to 18 V

Robust input range accepts common 5 V, 9 V, 12 V, and 15 V sources

Efficient load delivery up to 2 A for mid power point-of-load needs

Improved heat dissipation PowerPAD helps lower thermal resistance when properly soldered to the PCB

Simple design flow non-synchronous architecture with straightforward diode and inductor selection

Packaging

Type Tape and Reel TR for automated assembly

Package case 10-MSOP PowerPAD also referenced as 10-TFSOP 3.00 mm width with exposed pad

Material leadframe copper with mold compound and lead-free plating typical of RoHS3 compliant MSOP devices

Size body width about 3.00 mm compact footprint for dense layouts

Pin configuration 10 lead MSOP style with central exposed thermal pad on the underside exact pinout per datasheet

Mounting surface mount reflow compatible

Thermal characteristics exposed PowerPAD must be soldered to a ground or thermal plane to achieve low thermal resistance and reliable 2 A operation

Electrical properties per device ratings input 3 V to 20 V output 1 V to 18 V switching 2 MHz current 2 A non-synchronous

Lifecycle

Current status no public notice here that the part is nearing discontinuation. Lifecycle status can change. For the most up to date status please contact Y-IC sales or check our website.

Potential alternatives selection depends on required input range, output current, frequency, efficiency, and form factor. Examples within the TI ecosystem that are commonly evaluated for similar roles include TPS54231 and TPS54232 2 A class non-synchronous 1.2 MHz buck regulators and TPS5420 2 A class buck at lower switching frequency. Always verify electrical limits, control method, compensation, external BOM, pinout, thermal performance, and certifications before substitution. If you need vetted drop-in or functionally equivalent options please contact our sales team via the Y-IC website for a tailored cross-reference list.

Key Application Areas

Point-of-load regulation for MCUs DSPs FPGAs and ASICs

Industrial control and factory automation 24 V to low voltage rails

Communications and networking equipment

Set-top boxes STBs and consumer electronics

Battery backed and adapter powered systems with 5 V 9 V 12 V or 15 V rails

Test and measurement portable and embedded systems

Datasheet

Y-IC hosts the most authoritative and up to date datasheet for LM27342MY/NOPB on our product page. We recommend downloading the datasheet from this page to get complete electrical characteristics application notes typical schematics and layout guidance.

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