adrian95 / LT7171RV#TRMPBF

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Part Review and Verification

flux

3:58

Planning.

Analyzing the schematic.

Analyzing the PCB layout.

Reviewing the bill of materials.

Considering.

Searching web for: "site:analog.com LT7171 datasheet Analog Devices PDF"

Found 1 results.

Searching for a component.

Searching library for: "LT7171RV#TRMPBF dual 20A 16V silent switcher step-down regulator with digital power system management, need exact library entry and datasheet-backed metadata"

Creating search plan for: "LT7171RV#TRMPBF dual 20A 16V silent switcher step-down regulator with digital power system management, need exact library entry and datasheet-backed metadata --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","packaging","metadata"] hitsPerPage: 5"

Searching: "Dual 20A Silent Switcher step-down regulator, 16V input, digital power system management (LT7171 family), look for LT7171RV/TRMPBF package or equivalent library entries"

Searching web for: "LT7171RV#TRMPBF datasheet Analog Devices LT7171RV TRMPBF dual 20A 16V Silent Switcher"

Found 1 results.

Found 7 results.

Searching: "LT7171RV#TRMPBF dual 20A 16V silent switcher step-down regulator with digital power system management, need exact library entry and datasheet-backed metadata --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","packaging","metadata"] hitsPerPage: 5"

Finished searching for a component.

Looking for "part description, package type, package name, pin count, special features, summary" in lt7171_lt7171-1.pdf

Looking for "absolute maximum ratings for VIN, EXTVCC, DRVCC, INTVCC, VDD18, RUN, BOOST, SW, ITH, VSENSEP, VSENSEN, SCL, SDA, SYNC, operating junction temperature, storage temperature" in lt7171_lt7171-1.pdf

Looking for "electrical characteristics including input voltage range, quiescent current, shutdown current, switching frequency, reference accuracy, current sense accuracy, internal regulator values" in lt7171_lt7171-1.pdf

Looking for "pin functions and descriptions for every pin including exposed pad if present" in lt7171_lt7171-1.pdf

Looking for "recommended operating conditions for input voltage, output voltage range, switching frequency, temperature range" in lt7171_lt7171-1.pdf

Looking for "ordering information and package option for LT7171RV TRMPBF" in lt7171_lt7171-1.pdf

Looking for "package information mechanical dimensions, exposed pad, package size, land pattern" in lt7171_lt7171-1.pdf

Running multiple web searches.

Found 1 results.

Found 1 results.

Running multiple web searches.

Found 1 results.

Found 1 results.

Found 1 results.

Running multiple web searches.

Found 1 results.

Found 1 results.

Found 1 results.

Running multiple web searches.

Found 1 results.

Found 1 results.

Found 1 results.

Part review result

1) Available part information

FieldResult
PartLT7171RV#TRMPBF
Description20 A, 16 V Silent Switcher step-down regulator with digital power system management
ManufacturerAnalog Devices
MPNLT7171RV#TRMPBF
Datasheet URL propertyAlready set: PDF
Package from official sources30-lead LQFN, 3.5 mm x 4 mm, package drawing 05-08-7066
Package in current part projectFootprint exists; schematic symbol exposes 35 numbered terminals
Pin numbering in current symbol1 to 35
Nets in part projectNone defined yet

2) Datasheet property check

CheckResult
Datasheet URL present already?Yes
Web lookup needed?No
Property update needed?No
3) Datasheet scan summary
I attempted the full datasheet scan via @file twice, but the PDF parsing failed both times. I then fell back to official Analog Devices web results that quote the same datasheet and product page.

3a) Key electrical / feature metadata

ItemExact value / summary
Input voltage range2.9 V to 16 V
Low input operation with EXTVCCdown to 1.5 V with EXTVCC
Output voltage range0.4 V to 5.5 V
Switching frequency400 kHz to 4 MHz
Output voltage accuracy±0.25% for 0.6 V ≤ VOUT ≤ 1.375 V
ArchitectureSilent Switcher step-down regulator with digital power system management
InterfacePMBus / I2C
TelemetryReadback of VOUT, IOUT, VIN, die temperature, and faults
ConfigurationProgrammable voltage, current limit, sequencing, frequency, loop compensation
NVM3-time programmable NVM
SensingDifferential remote output sense
MultiphasePolyPhase load sharing

3b) Absolute maximum ratings recovered from official snippets

ParameterExact value recovered
VIN-0.3 V to +20 V
EXTVCC-0.3 V to +6 V
RUN / PGOOD / ALERT / SDA / SCL / SYNC / PWM_CFG / FAULT / ASEL / WP / SHARE_CLK / ITH / VOUT_CFG-0.3 V to +6 V
VSENSEP-0.3 V to +6 V
VSENSEN-0.3 V to +0.3 V

3c) Recommended operating conditions recovered

ParameterExact value recovered
Input voltage2.9 V to 16 V
Output voltage0.4 V to 5.5 V
Switching frequency400 kHz to 4 MHz

3d) Pin metadata recovered from official sources

Pin / pinsFunction summary
1, 24VIN power inputs
2, 23, 33, 34, 35PGND power grounds
3DRVCC driver supply
8INTVCC internal bias / LDO-related supply
10VDD18
12ALERT
13RUN enable / control
14PGOOD
15SDA
16SCL
17FAULT
18SYNC
19SHARE_CLK
20EXTVCC external bias supply input
21VSENSEP positive remote sense
22VSENSEN negative remote sense
25BOOST1 bootstrap
26, 27SW1 switching node
28, 29SW0 switching node
30BOOST0 bootstrap

3e) Package metadata recovered

ItemExact value recovered
Package type30-lead LQFN
Body size3.5 mm x 4 mm
Package drawing05-08-7066
Exposed padOfficial sources indicate an exposed-pad style LQFN package
Full mechanical dimensions / land patternNot fully extracted because PDF parsing failed
4) Cross-check: symbol and footprint vs official datasheet

Findings

CheckStatusWhy it matters
Pin names vs datasheet signal setLooks consistentThe current symbol terminals align well with the official pin names recovered from the datasheet snippets.
Pin numbering rangeLooks consistentThe current symbol uses pins 1 to 35, and official snippets confirm pins through 35 including PGND on 35.
Footprint existsYesGood: this avoids a missing-footprint manufacturing blocker.
Pin electrical types in symbolRiskAll symbol pins are currently marked Unspecified. This can weaken ERC quality and hide integration mistakes in downstream designs.
Package naming / pin-count metadataHigh-risk mismatch to verifyOfficial sources say 30-lead LQFN, but the current part representation exposes 35 numbered terminals. This may be correct physically if the package naming excludes some power-style terminals or grouping conventions, but it is a red flag until the package drawing is checked directly.
Footprint geometry vs datasheet land patternNot fully verifiedI could confirm pad presence only. I could not extract pad sizes, pitch, exposed-pad geometry, or courtyard from the datasheet because the PDF parsing failed. This remains the main unresolved manufacturing risk.

My assessment

AreaVerdict
Schematic symbol pin namingProbably okay
Schematic symbol pin typingNeeds improvement
Pin count / package metadata consistencyNeeds manual verification now
Footprint manufacturability confidenceNot yet sufficient

Most important risks to fix before using this part

PriorityIssuePotential consequence
130-lead package label vs 35-terminal implementationWrong package selection, wrong ordering, or incorrect footprint assumptions
2Footprint dimensions not verified against package drawing 05-08-7066Assembly failure, soldering defects, exposed-pad mismatch
3All pins typed as UnspecifiedERC misses power/control/interface mistakes
If you want, I can continue with a stricter audit next:
  • fetch review results for footprint-related issues
  • inspect the footprint in more detail
  • or prepare a pin-type correction table for the symbol based on the recovered pin functions
@review footprint issues
@layout inspect footprint
Pin type audit
54 days
​
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    Assets

    stp

    LT7171RV#TRMPBF

    LT7171RV#TRMPBF.stp3D Model
    LT7171RV#TRMPBF-thumb.png

    LT7171RV#TRMPBF-thumb.png

    LT7171RV#TRMPBF-thumbThumbnail
    kicad_mod

    LT7171RV#TRMPBF

    LT7171RVTRMPBF.kicad_modFootprint
    LT7171RV#TRMPBF

    LT7171RV#TRMPBF

    LT7171RV#TRMPBF Symbol.svgDefault

    LT7171RV#TRMPBF

    LT7171RV#TRMPBF thumbnail
    Buck Switching Regulator IC Positive Programmable 0.4V 1 Output 20A 30-PowerTFQFN #CommonPartsLibrary #IntegratedCircuit #Power Management (PMIC) #Voltage-Regulators #DC DC Switching Regulators

    Properties

    LT7171RV#TRMPBF

    Analog Devices

    Integrated Circuit

    analog.com/media/en/technical-documentation/data-sheets/lt7171_lt7171-1.pdf

    IC

    creativecommons.org/licenses/by/4.0/

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