Texas Instruments LM20144QMHX/NOPB

Mfr. Part

LM20144QMHX/NOPB

Manufacturer

Luminary Micro / Texas Instruments

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Detailed Description

4 A synchronous step-down (buck) voltage regulator IC for 3.3 V and 5 V rails

Input voltage 2.95 V to 5.5 V, single positive output, adjustable 0.8 V to 4.68 V

Switching frequency range 500 kHz to 1.5 MHz for size and efficiency trade-offs

Automotive-grade AEC-Q100, PowerWise series

Package 16-HTSSOP (PowerTSSOP with exposed thermal pad), surface-mount

Operating junction temperature -40°C to +125°C

RoHS3 compliant

Key Features

4 A continuous output current with integrated high-side and low-side MOSFETs

Wide switching frequency range 500 kHz to 1.5 MHz

Adjustable output down to 0.8 V for low-voltage digital cores

Synchronous rectification for high efficiency

Single-output, positive buck topology

Stable operation from 2.95 V to 5.5 V input rails

Automotive AEC-Q100 qualification

Compact 16-HTSSOP package with exposed pad for better heat dissipation

Surface-mount assembly for high-density designs

RoHS3 compliance

Key Advantages

High efficiency and low heat due to synchronous design

Small footprint and reduced BOM thanks to integrated power MOSFETs

Flexible frequency lets you optimize for size or efficiency

Drives low-voltage rails precisely for FPGAs, ASICs, and DDR supplies

Automotive-grade reliability for long-term deployment

Simple, direct point-of-load from common 3.3 V and 5 V system rails

Packaging

Shipment type: Tape & Reel (TR) for automated assembly

IC package type: 16-HTSSOP (PowerTSSOP) with exposed thermal pad

Case size: 16-PowerTSSOP, 0.173 in (approx), 4.40 mm body width

Mounting: Surface-mount (SMT)

Pin configuration: 16 leads plus exposed thermal pad; standard TSSOP lead pitch (see datasheet for exact pinout and pitch)

Materials: Molded epoxy body, copper leadframe, tin-plated leads

Thermal characteristics: Exposed pad improves heat flow to PCB; junction temperature range -40°C to +125°C; follow layout and thermal via guidance in datasheet

Electrical properties relevant to package: RoHS3 compliant; optimized leadframe and pad for low thermal resistance; use recommended copper area for best thermal performance

Supplier device package: 16-HTSSOP

Case designation: 16-PowerTSSOP (0.173 in, 4.40 mm width)

Lifecycle

Current status: Active based on recent market data. For the latest lifecycle status and stock, check our website.

Close alternatives and equivalents to consider for similar input range and output current

- TPS54420 (TI, 4 A, 2.95 V to 6 V input, synchronous buck)

- TPS54420-Q1 (Automotive AEC-Q100 version)

- TPS54620 (TI, 6 A, 2.95 V to 6 V input, synchronous buck)

- TPS54620-Q1 (Automotive AEC-Q100 version)

- TPS54320 (TI, 3 A, 2.95 V to 6 V input, synchronous buck)

- TPS54320-Q1 (Automotive AEC-Q100 version)

- LM20143 (TI, same family, 3 A)

- LM20145 (TI, same family, 5 A)

Not all alternatives match every spec. Compare input range, current, package, and automotive grade. If you need exact cross-reference guidance, contact our sales team via our website for detailed support.

Key Application Areas

Automotive point-of-load from 3.3 V and 5 V rails: ECUs, infotainment, cameras, sensors

FPGA/ASIC core rails and low-voltage digital logic supplies

DDR and other memory rails requiring accurate low-voltage regulation

Industrial controllers, PLCs, and embedded systems with tight space and thermal limits

Networking and telecom baseband subsystems powered from 3.3 V or 5 V

General-purpose point-of-load conversion in compact electronics

Datasheet

Our website hosts the most authoritative datasheet for LM20144QMHX/NOPB. We recommend downloading it directly from this product page to get the latest specifications, pinouts, layout, and thermal guidance.

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