Part Information Review and Updates
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
| Field | Current value | Datasheet check | Status |
|---|---|---|---|
| Manufacturer Part Number | XL4016 | Matches datasheet MPN | OK |
| Manufacturer Name | XLSEMI | Matches datasheet manufacturer | OK |
| Description | 8A 180KHz 40V Buck DC to DC Converter | Matches datasheet description | OK |
| Datasheet URL | already set | Present, so no web lookup/update was needed | OK |
| Package or Case Code | TO | Datasheet package is TO220-5L | Mismatch |
| Designator Prefix | PS | Not contradicted by datasheet | OK |
Key specs from the datasheet
| Parameter | Value |
|---|---|
| Function | Buck DC-DC converter |
| Package | TO220-5L |
| Switching frequency | 180 kHz fixed |
| Recommended input range | 8 V to 36 V |
| Adjustable output range | 1.25 V to 32 V |
| Load capability | 8 A |
| Constant output current capability | 12 A |
| Max efficiency | up to 96% |
| Protection/features | thermal shutdown, current limit, short-circuit protection |
Datasheet pinout
- 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
| Area | Issue | Severity |
|---|---|---|
| Package metadata | Project says TO, datasheet says TO220-5L | Medium |
| Pin count | Datasheet also lists the metal tab connected to SW, but the project currently has only 5 terminals | High |
| Pin types | All terminals are still set to Unspecified: GND, FB, SW, VC, VIN | High |
| Pin descriptions | No pin descriptions are populated on the terminals | High |
| Symbol completeness | No dedicated terminal for the exposed/tab connection, even though exposed pads/tabs should be represented when listed in the datasheet | High |
Recommended pin property fixes
- 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
6h
Ready.
GND
Pin Number
1
VIN
Pin Number
5
FB
Pin Number
2
SW
Pin Number
3
VC
Pin Number
4
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XL4016
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
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