Part Review and Verification

flux

Part review result 1) Available part information

Table

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

Table

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

Table

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

Table

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

Table

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

Table

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

Table

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

Table

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

Table

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

Table

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
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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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