Part Information Review and Updates

flux

1:24

Determining project components.

Analyzing the PCB layout.

Analyzing the schematic.

Looking for "Part number, manufacturer, package type, description, frequency, input voltage range, output current, and key features." in xl4016%20datasheet.pdf

Looking for "Pin configuration with pin numbers, pin names, and pin descriptions for all pins." in xl4016%20datasheet.pdf

Looking for "Package information and mechanical drawing for the package." in xl4016%20datasheet.pdf

Looking for "Recommended application circuit, implementation notes, and any notes about grounding, switch node, or thermal/layout guidance." in xl4016%20datasheet.pdf

Summarizing key specifications.

Checking pin types and classifications.

Reviewing footprint and datasheet details.

Confirming datasheet URL.

I reviewed the part project against the datasheet and the current part definition.
Part info review

Current project metadata

FieldCurrent valueDatasheet checkStatus
Manufacturer Part NumberXL4016Matches datasheet MPNOK
Manufacturer NameXLSEMIMatches datasheet manufacturerOK
Description8A 180KHz 40V Buck DC to DC ConverterMatches datasheet descriptionOK
Datasheet URLalready setPresent, so no web lookup/update was neededOK
Package or Case CodeTODatasheet package is TO220-5LMismatch
Designator PrefixPSNot contradicted by datasheetOK

Key specs from the datasheet

ParameterValue
FunctionBuck DC-DC converter
PackageTO220-5L
Switching frequency180 kHz fixed
Recommended input range8 V to 36 V
Adjustable output range1.25 V to 32 V
Load capability8 A
Constant output current capability12 A
Max efficiencyup to 96%
Protection/featuresthermal shutdown, current limit, short-circuit protection
Symbol / pin cross-check

Datasheet pinout

PinDatasheet nameCurrent terminalStatus
1GNDGNDMatch
2FBFBMatch
3SWSWMatch
4VCVCMatch
5VINVINMatch
Metal tabSWno separate terminal foundMismatch / missing representation
What matches
  • The five numbered terminals in the schematic match the datasheet names and numbers exactly.
  • The footprint also contains pads named GND, FB, SW, VC, and VIN, so the basic pad naming is aligned with the symbol.

Issues I found

AreaIssueSeverity
Package metadataProject says TO, datasheet says TO220-5LMedium
Pin countDatasheet also lists the metal tab connected to SW, but the project currently has only 5 terminalsHigh
Pin typesAll terminals are still set to Unspecified: GND, FB, SW, VC, VINHigh
Pin descriptionsNo pin descriptions are populated on the terminalsHigh
Symbol completenessNo dedicated terminal for the exposed/tab connection, even though exposed pads/tabs should be represented when listed in the datasheetHigh

Recommended pin property fixes

TerminalRecommended pin typeShort pin description
GNDGroundPower ground
FBInputFeedback input
SWPower OutSwitch node output
VCUnspecified or PassiveRegulator bypass pin
VINPower InSupply input
new tab terminalGround not correct; should electrically follow SW nodeThermal tab / switch tab
Footprint check
  • I could confirm the footprint has pads for the five named pins.
  • I could not fully verify pad geometry/mechanical dimensions from the currently returned layout data.
  • The main footprint-level concern is still the same: the datasheet package is TO220-5L, while the project metadata is only TO, and the metal tab tied to SW is not represented as its own terminal.
For part-project verification, the datasheet should be treated as the source of truth, pin numbers must match exactly, and exposed/thermal pads count as pins when the datasheet lists them .
Summary
  • Good: MPN, manufacturer, description, and the 5 numbered pin names/numbers are correct.
  • Needs fixing: package metadata, pin types, pin descriptions, and likely the missing metal tab = SW terminal.
  • No datasheet URL action needed: a datasheet URL is already set, so I did not search/update it.
If you want, I can fix the part metadata and terminal properties next.
Fix metadata and pins
Check footprint dimensions
Review all power parts
Document review findings
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Documents

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    Assets

    kicad_mod

    XL4016

    XL4016.kicad_modFootprint
    XL4016

    XL4016

    XL4016 Symbol.svgDefault
    XL4016-thumb.png

    XL4016-thumb.png

    XL4016-thumbThumbnail

    XL4016

    XL4016 thumbnail
    8A 180KHz 40V Buck DC to DC Converter The XL4016 is a high-efficiency DC-DC step-down (buck) switching regulator IC designed for applications that require high current output and simple external component design. It is commonly used in power supplies, LED drivers, battery chargers, and automotive/industrial DC conversion systems. Type: Step-down (buck) DC-DC converter Input voltage range: ~8 V to 40 V Output current: up to 8 A (practically ~5–6 A continuous with good cooling) Output voltage: adjustable via external resistors Switching frequency: ~180 kHz Built-in high-current power MOSFET switch Current-mode PWM control Cycle-by-cycle current limiting Thermal shutdown protection Short-circuit protection PackageTypically available in TO-220-5L package (with heat sink tab) Designed for external diode, inductor, and capacitor components Typical Applications DC power supply modules LED constant-current drivers Battery charging circuits Automotive 12V/24V step-down systems DIY adjustable bench power supplies #CommonPartsLibrary #IntegratedCircuit #PowerManagement

    Properties

    XL4016

    XLSEMI

    Power Management

    makerfabs.com/desfile/files/XL4016-Datasheet.pdf?srsltid=AfmBOorxDJlb9ZdY7HuWkaxSSxQ2jKlPKrxPzYJ0C8N4t5mqFoo529wg

    PS

    TO

    creativecommons.org/licenses/by/4.0/

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