Texas Instruments LM20144MHX/NOPB

Mfr. Part

LM20144MHX/NOPB

Manufacturer

Luminary Micro Texas Instruments

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Detailed Description

4 A synchronous buck DC-DC regulator with adjustable output

Input voltage range 2.95 V to 5.5 V optimized for 3.3 V and 5 V rails

Adjustable output 0.8 V to 4.68 V single positive output

Switching frequency 500 kHz to 1.5 MHz for compact designs and fast transient response

Surface-mount 16-HTSSOP PowerTSSOP package with exposed thermal pad

Wide junction temperature range -40°C to 125°C TJ

RoHS3 compliant lead-free

Series PowerWise

Base product number LM20144

Stock available 1540 units

Ideal for point-of-load conversion and high-efficiency power delivery in digital systems

Key Features

Synchronous rectification for high efficiency and lower heat

4 A continuous output current capability

Buck topology step-down conversion

Adjustable output via external resistor network

Single-channel output for simple designs

High switching frequency range 500 kHz to 1.5 MHz supports small inductors and capacitors

Wide operating temperature -40°C to 125°C TJ for harsh environments

Surface-mount package for automated assembly

Tape and Reel packaging for high-volume manufacturing

Positive output configuration

PowerWise series optimized for low power and high efficiency

Key Advantages

High efficiency reduces power loss and heat in compact systems

Small solution size thanks to high switching frequency and PowerTSSOP package

Flexible output voltage range covers common digital rails 0.8 V to 4.68 V

Stable performance across temperature and load ranges

Synchronous architecture reduces external component count compared to non-synchronous designs

Simple design and fast time-to-market with adjustable output and standard pinout

Packaging

Type Tape and Reel TR for automated pick-and-place

Package case 16-HTSSOP PowerTSSOP width 0.173 inch 4.40 mm with exposed thermal pad

Material Molded plastic package with copper leadframe and large exposed pad for heat dissipation

Size Compact 16-pin body approx 4.40 mm width low profile suitable for dense PCBs

Pin configuration 16 leads typical buck regulator pins include VIN SW PGND BOOT EN FB COMP SS TRK VCC and an exposed thermal pad refer to the datasheet for exact pinout

Thermal characteristics Exposed pad improves heat spreading and lowers junction temperature wide TJ rating -40°C to 125°C follow layout guidelines use thermal vias to a ground plane

Electrical properties Input 2.95 V to 5.5 V output 0.8 V to 4.68 V current 4 A switching 500 kHz to 1.5 MHz synchronous rectifier single positive output RoHS3 compliant

Lifecycle

Status Active and not nearing discontinuation based on current series information

Equivalent and alternative models within TI PowerWise family

LM20142 2 A similar architecture lower current

LM20143 3 A similar architecture mid current

LM20145 5 A similar architecture higher current

Additional TI alternatives for wider input ranges or different features

TPS54320 3 A synchronous buck 4.5 V to 20 V input

TPS54427 4 A synchronous buck 4.5 V to 18 V input

If you need drop-in or form-fit-function guidance or other brands and options please contact our sales team via the Y-IC website for detailed cross-references and availability

Key Application Areas

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

5 V to sub-5 V conversions in embedded systems

Networking and telecom cards router and switch line cards

Industrial control PLCs sensors HMIs and drives

Storage servers SSD rails and auxiliary supplies

Consumer and set-top boxes small form factor power stages

Battery-backed and portable equipment with regulated digital rails

Datasheet

Y-IC provides the most authoritative datasheet for LM20144MHX/NOPB on our product page

We strongly recommend downloading the datasheet here for full specifications pinout design guidelines and layout recommendations

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