Part Audit Review

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Part Audit Report

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Part Audit Report Audit scope
Reviewed project metadata, all 8 schematic terminals, the rendered footprint source, pad mapping, package geometry, and the manufacturer datasheet for LM74700QDDFRQ1.
Current part information Datasheet identity and key specifications
  • Automotive ideal-diode controller for reverse-battery protection using an external N-channel MOSFET.
  • Active orderable MPN: LM74700QDDFRQ1.

flux

Audit complete. The pin numbering, names, pad mapping, and footprint geometry match TI’s LM74700QDDFRQ1 datasheet; the existing Datasheet property was already populated, so it was not changed.
Main mismatches: incorrect/unspecified pin electrical types, missing descriptions on all pins, generic package metadata instead of DDF 8-pin SOT-23-THIN, and an incomplete functional description. Full findings and key specifications are in the Part Audit Report.
A

adrian95

Correct all terminal types and descriptions, update the package metadata, and improve the part description.

flux

I’ll apply the datasheet-aligned terminal types and descriptions, correct the package identification, improve the part description, then verify the updated part.

flux

Terminal metadata is corrected. I’m now updating the package identification and the functional part description.

flux

Package and description updates are applied. I’m doing a final read-back of all eight terminals and project metadata.

flux

Updated and verified:
  • All eight terminals now have datasheet-aligned electrical types and descriptions.
  • Package metadata is set to SOT-23-8, with the exact DDF SOT-23-THIN designation in the description.
  • The part description now concisely covers function, voltage range, reverse protection, quiescent current, package, and automotive qualification.
No pin numbering or footprint mappings were changed.
Verify symbol rendering
Review package model
Audit datasheet metadata
Prepare application circuit
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Pins

Symbol

Layout

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Part Audit Report
Audit scope
Reviewed project metadata, all 8 schematic terminals, the rendered footprint source, pad mapping, package geometry, and the manufacturer datasheet for LM74700QDDFRQ1.
Current part information

Table

FieldCurrent valueAssessment
Manufacturer part numberLM74700QDDFRQ1Correct
ManufacturerTexas InstrumentsCorrect
Designator prefixUCorrect
Package propertySOT-23Incomplete: the orderable part is specifically SOT-23-THIN, DDF, 8-pin
Pin/pad count8Correct
DescriptionMPN plus footprint asset namesIncomplete: does not describe the device function or key electrical ratings
Datasheet propertyPresent, Flux-hosted PDFPresent; no update required
Datasheet identity and key specifications
  • Automotive ideal-diode controller for reverse-battery protection using an external N-channel MOSFET.
  • Active orderable MPN: LM74700QDDFRQ1.
  • Package: DDF, 8-pin SOT-23-THIN, nominal body 2.90 mm × 1.60 mm, maximum height 1.1 mm.
  • Operating input range: 3.2 V to 65 V under the device’s normal positive-input operation; the recommended pin voltage table also specifies ANODE and EN operation down to −60 V for reverse-battery conditions.
  • Reverse voltage capability: −65 V absolute maximum at ANODE.
  • Typical operating quiescent current: 80 µA; maximum 130 µA under the stated electrical-characteristic conditions.
  • Shutdown current: 0.9 µA typical, 1.5 µA maximum.
  • Typical peak gate source current: 11 mA; typical peak gate sink current: 2.37 A.
  • Automotive operating temperature range for this orderable package: −40 °C to +125 °C; AEC-Q100 qualified.
Pin cross-check

Table

PinDatasheet nameDatasheet function/typeCurrent symbol nameCurrent Pin TypeCurrent Pin DescriptionResult
1ENEnable input; may connect to ANODE for always-on operationENUnspecifiedMissingName/number correct; type and description missing
2GNDGroundGNDPower OutMissingName/number correct; Pin Type is incorrect
3N.C.No connectionN.CBi-DirectionalMissingName/number correct; Pin Type is incorrect
4VCAPCharge-pump output; connect external charge-pump capacitorVCAPUnspecifiedMissingName/number correct; type and description missing
5ANODEInput/anode sense; connect to source of external N-channel MOSFETANODEUnspecifiedMissingName/number correct; type and description missing
6GATEGate-drive output; connect to external MOSFET gateGATEUnspecifiedMissingName/number correct; type and description missing
7N.C.No connectionN.CBi-DirectionalMissingName/number correct; Pin Type is incorrect
8CATHODECathode sense input; connect to drain of external N-channel MOSFETCATHODEUnspecifiedMissingName/number correct; type and description missing
  • Pin 1 EN: Input — “Enable input; connect to ANODE for always-on operation.”
  • Pin 2 GND: Ground — “Ground.”
  • Pin 3 N.C.: Not Connected — “No internal connection.”
  • Pin 4 VCAP: Output — “Charge-pump output; connect an external charge-pump capacitor.”
  • Pin 5 ANODE: Input — “Diode anode/input power sense; connect to external N-channel MOSFET source.”
  • Pin 6 GATE: Output — “Gate-drive output; connect to external N-channel MOSFET gate.”
  • Pin 7 N.C.: Not Connected — “No internal connection.”
  • Pin 8 CATHODE: Input — “Diode cathode sense; connect to external N-channel MOSFET drain.”
Symbol review
  • All eight pin names and pin numbers match the TI top-view pin table.
  • Left/right grouping is logically readable: EN/GND/N.C./VCAP on the left and CATHODE/N.C./GATE/ANODE on the right.
  • The symbol lacks terminal descriptions on every pin.
  • Electrical types are not datasheet-aligned: GND is marked Power Out, both N.C. pins are Bi-Directional, and the six functional pins are mostly Unspecified.
Footprint review
The footprint source is named SOT-23-THIN_1P6X2P9_TEX and contains eight SMD pads.

Table

FeatureDatasheet recommendationCurrent footprintAssessment
Pad count88Correct
Lead pitch0.65 mm0.65 mmCorrect
Pad size1.05 mm × 0.45 mm1.0287 mm × 0.4572 mmVery close; acceptable dimensional match
Nominal body2.90 mm × 1.60 mmFab outline approximately 2.8956 mm × 1.6002 mmCorrect
Pin-1 markerRequiredPresentCorrect
Pad-number mappingPins 1–4 one side, 5–8 opposite sideCorrect in source footprintCorrect
Exact package namingDDF, SOT-23-THIN, 8 pinProject property says only SOT-23Metadata mismatch only
No footprint geometry or pad-number mismatch was found. The pad dimensions differ slightly from TI’s example land pattern by about 0.021 mm in length and 0.007 mm in width, which is minor and does not indicate an incorrect footprint.
Flagged mismatches
  1. GND terminal electrical type is wrong: currently Power Out; should be Ground.
  2. Pins 3 and 7 electrical types are wrong: currently Bi-Directional; should be Not Connected.
  3. EN, VCAP, ANODE, GATE, and CATHODE electrical types are unspecified instead of Input/Output as defined by TI.
  4. All Pin Description properties are missing.
  5. Package property is underspecified: “SOT-23” should identify SOT-23-THIN (DDF), 8-pin.
  6. Part description is incomplete and should state that this is an automotive, low-IQ reverse-battery protection ideal-diode controller with external N-channel MOSFET drive.
  7. The Datasheet property is populated but points to a hosted copy rather than the canonical TI URL. This is not a functional mismatch and was intentionally left unchanged because the requested condition for updating it was not met.
Overall verdict
The pin numbering, pin names, pad mapping, and footprint geometry are correct for LM74700QDDFRQ1. The primary quality issues are metadata-related: terminal electrical types, missing pin descriptions, underspecified package naming, and an incomplete functional description.

  • Audit scope

  • Current part information

  • Datasheet identity and key specifications

  • Pin cross-check

  • Recommended terminal metadata

  • Symbol review

  • Footprint review

  • Flagged mismatches

  • Overall verdict