Part Datasheet Review

Created a project doc

LMR51420XDDCR Part Review

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Date: 2026-07-20 Official datasheet found: https://www.ti.com/lit/ds/symlink/lmr51420.pdf

flux

Completed the part review and updated the Datasheet URL to the official TI PDF. I created the detailed report here: LMR51420XDDCR Part Review.
Open items:
  • Part Type is still incorrect: Linear Regulator vs. datasheet’s synchronous buck switching regulator.
  • Package property is still incorrect: TO vs. SOT-23-THIN (DDC), 6 pins.
  • Description includes likely incorrect claims: power-good output and 100% duty-cycle operation.
  • Pin names/numbers match, but terminal pin types/descriptions are missing.
  • Footprint is plausible SOT-23-6, but its land pattern should be verified against TI’s DDC0006A example.
Suggested next steps:
  1. Update the incorrect part metadata.
  2. Populate pin descriptions/types from the datasheet.
  3. Adjust or verify the footprint land pattern before publishing.
Fix metadata and pins
Fix part metadata
Populate pin metadata
Verify footprint geometry
Run part review
GND
Pin Number
1
VIN
Pin Number
3
SW
Pin Number
2
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LMR51420XDDCR

LMR51420XDDCR thumbnail
Synchronous Buck DC-DC Converter – 2 A synchronous step-down (buck) switching regulator for high-efficiency power conversion in industrial, automotive, and embedded applications. Operates from a 4.5 V to 36 V input voltage, provides an adjustable output voltage from 0.6 V to 34.2 V, and switches at a 500 kHz fixed frequency. Features 40 µA typical quiescent current, 100% duty-cycle operation, synchronous rectification, cycle-by-cycle current limiting, hiccup short-circuit protection, thermal shutdown, undervoltage lockout (UVLO), power-good output, and enable input. Operates over a −40°C to +150°C junction temperature range and is housed in a 6-pin SOT-23-THIN (DDC) package.
#TexasInstruments #LMR51420 #LMR51420XDDCR #BuckConverter #DCDCConverter #SynchronousBuck #SwitchingRegulator #PowerManagement #2A #SIMPLESWITCHER #SOT236 #EmbeddedSystems

Properties

LMR51420XDDCR

Texas Instruments

Linear Regulator

ti.com/lit/ds/symlink/lmr51420.pdf

IC

TO

parametric-v1

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