Part Review and Datasheet Validation

flux

Reviewed the LM65645SRZTRQ1 part against the TI datasheet and saved the full report in part-review-lm65645srztrq1.
Summary: the main pin numbering and 20-pin RZT/WQFN-FCRLF + DAP mapping match the datasheet. Key issues flagged: the Datasheet URL is an uploaded copy rather than TI’s official stable URL, pin 5 is named MODE_SYNC_TEMP instead of MODE/SYNC, pin 7 omits UVLO, several pin types/descriptions are too generic, and the footprint has extra mount-pad nodes that should be confirmed as intentional non-electrical thermal/assembly features.
adrian95

adrian95

Fix the pin names, pin types, datasheet URL, and then run a symbol/footprint review again.

flux

I’ll update the official TI datasheet URL and clean up the flagged terminal names/types, then re-inspect the symbol and footprint against the datasheet.

flux

Done. I updated the Datasheet URL to TI’s official PDF, renamed the flagged pins (PG, MODE_SYNC, EN_UVLO), standardized pin types/descriptions, and re-ran the symbol/footprint review.
Open item:
  • The only remaining item is footprint-related: extra Mounts pad nodes labeled/unnamed beyond the 21 primary pads still appear in the layout tree; they should be confirmed as intentional non-electrical/wettable-flank or thermal construction features.
I updated the full report in part-review-lm65645srztrq1.
Fix mounts and verify
Clean footprint mounts
Run full checks
Check footprint geometry
Export review report
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LM65645SRZTRQ1

LM65645SRZTRQ1 thumbnail
Buck Switching Regulator IC Positive Adjustable (Fixed) 0.8V (3.3V, 5V) 1 Output 4.5A 20-WFQFN Exposed Pad
The LM656x5-Q1 are a family of automotive buck converters designed for high efficiency, high-power density, and ultra-low electromagnetic interference (EMI). The converters operate over a wide input voltage range of 3V to 65V (70V transient 94% peak efficiency at 24VIN, 5VOUT, 400kHz – 2.5µA switching input current at no load • High power density – 3.6mm × 2.6mm, wettable flank, 20-pin package – Pin compatible with 36V LM654x0-Q1 – ϴJA = 24.0°C/W (LM65645-Q1EVM) • Create a custom design using the LM656x5-Q1 with the WEBENCH® Power Designer 2 Applications • Advanced driver assistance systems (ADAS) • Automotive infotainment and cluster • Hybrid, electric, and powertrain systems
#AutomotiveElectronics #BuckConverter #DCDCConverter #PowerManagement #VoltageRegulator #SynchronousBuck #LowEMI #AECQ100 #TexasInstruments #EmbeddedSystems

Properties

LM65645SRZTRQ1

ti.com/lit/ds/snvsch2a/snvsch2a.pdf

Texas Instruments

Power Management

U

parametric-v1

creativecommons.org/licenses/by/4.0/

20-WFQFN Exposed Pad

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