Part Review Datasheet Check
Worked for 1 min 21 sec
The part already has a Datasheet URL set, so I won’t overwrite it unless the cross-check shows it’s the wrong document. I’m extracting the pinout, package, and key regulator specs now.
Worked for 11 mins 40 sec
I updated the Datasheet URL to Microchip’s official MCP1825/MCP1825S PDF and am checking the 5-lead SOT-223 pinout and land pattern against the current symbol and footprint.
Worked for 6 mins 40 sec
Created a project doc
MCP1825T-3302E/DC Part Review
Date: 2026-07-22 Reviewed the published part project metadata, schematic terminals/symbol, footprint, package/pad information, and datasheet...
Completed the MCP1825T-3302E/DC part review. I updated the Datasheet URL to the official Microchip PDF, added datasheet-backed pin descriptions/types, and confirmed the symbol/pinout and SOT-223-5 footprint are substantially consistent.
Open items:
- Minor footprint caveat: small lead pads are 2.00 mm long vs the datasheet land-pattern value of 1.90 mm; low risk, but not exact.
Detailed results are in MCP1825T-3302E/DC Part Review.
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MCP1825T-3302E/DC Part Review
Date: 2026-07-22
Scope
Reviewed the published part project metadata, schematic terminals/symbol, footprint, package/pad information, and datasheet-backed pin descriptions for Microchip MCP1825T-3302E/DC.
Datasheet
- Official datasheet URL set on project: https://ww1.microchip.com/downloads/aemDocuments/documents/APID/ProductDocuments/DataSheets/MCP1825-MCP1825S-500-mA-Low-Voltage-Low-Quiescent-Current-LDO-Regulator-Data-Sheet-DS20002056.pdf
- Datasheet: Microchip MCP1825/MCP1825S, 500 mA Low Voltage, Low Quiescent Current LDO Regulator, DS20002056.
Existing/updated part metadata
- MPN: MCP1825T-3302E/DC
- Manufacturer: Microchip Technology
- Part type: Linear Regulator
- Designator prefix: IC
- Package/case: SOT-223 / SOT-223-5 DC package
- Description: fixed 3.3 V LDO regulator, 500 mA, low dropout, low quiescent current.
Key datasheet specs
- Regulator type: fixed-output positive LDO.
- Nominal output: 3.3 V for -3302 ordering code.
- Output current: 500 mA maximum.
- Input operating voltage: 2.1 V to 6.0 V, with VIN also required to satisfy VOUT(max) + dropout.
- Absolute maximum VIN: 6.5 V.
- Output voltage regulation/tolerance: typical +/-0.5%, full stated range VR -2.5% to VR +2.5%.
- Dropout voltage: 210 mV typical, 350 mV maximum at 500 mA.
- Quiescent current: 120 uA typical, 220 uA maximum at no load.
- Shutdown current: 0.1 uA typical, 3 uA maximum with SHDN low.
- Temperature range from datasheet electrical specs: -40 °C to +125 °C junction; absolute max junction +150 °C.
- Output capacitor: minimum 1 uF for stability; ceramic X7R/X5R recommended; maximum 22 uF recommended.
- Input capacitor: 1.0 uF to 4.7 uF recommended for most applications; input capacitance should be close to VIN.
- PWRGD: open-drain output, typically asserts when VOUT is within about 92% of nominal regulation, requires external pull-up in use.
Pinout cross-check
Table
| Pin | Datasheet function | Project terminal | Result |
|---|---|---|---|
| 1 | SHDN, active-low shutdown input | ~SHDN | Matches; project uses active-low notation. |
| 2 | VIN | VIN | Matches. |
| 3 | GND (TAB) | GND | Electrically matches; description updated to note common tab relationship. |
| 4 | VOUT | VOUT | Matches. |
| 5 | PWRGD | PWRGD | Matches. |
| 6 | GND (TAB) / exposed tab | GND_(TAB) | Matches. |
Pin description updates applied
The project terminals previously had unspecified or missing pin descriptions. Datasheet-backed descriptions and standard pin types were added:
- ~SHDN: Input, active-low shutdown control.
- VIN: Power In.
- GND: Ground, common with tab.
- VOUT: Power Out, regulated output requiring output capacitor.
- PWRGD: Open Collector, open-drain power-good output requiring pull-up.
- GND_(TAB): Ground tab/exposed pad.
Footprint / land pattern cross-check
Datasheet package: 5-lead Plastic Small Outline Transistor, package code DC, SOT-223-5.
Datasheet land pattern values extracted:
- Lead pitch: 1.27 mm BSC.
- Outside pitch across five small leads: 5.08 mm BSC.
- Contact pad width for small leads X1: 0.65 mm.
- Contact pad length for small leads Y1: 1.90 mm.
- Tab/large pad width X2: 3.20 mm.
- Contact pad spacing C: 6.10 mm.
Current footprint:
- Footprint asset: SOT127P706X180-6N.kicad_mod, described as 5-Lead(DC) SOT-223.
- Pads 1-5: centers at 1.27 mm pitch, spanning 5.08 mm; pad size 0.65 mm x 2.00 mm.
- Pad 6/tab: centered opposite lead row; pad size 2.00 mm x 3.20 mm.
Result:
- Pin count and pad numbering match the datasheet SOT-223-5 / DC package.
- Small-lead pad pitch and width match the datasheet. Small-lead pad length is 2.00 mm vs datasheet-recommended 1.90 mm; this is a minor +0.10 mm deviation and should be acceptable unless exact land-pattern replication is required.
- Tab pad has the 3.20 mm dimension aligned across the tab/pin-span direction and appears consistent with the datasheet X2 dimension. Row-to-tab spacing appears approximately consistent with the 6.10 mm contact spacing, though exact Microchip datum interpretation should be verified against the mechanical drawing if strict land-pattern matching is required.
Mismatches / issues found
- Datasheet URL was not the official Microchip URL; updated to the official Microchip PDF.
- Pin descriptions and precise pin types were missing/unspecified; corrected with datasheet-backed descriptions.
- Pin 3 was named simply GND while the datasheet labels it GND (TAB). Kept the terminal name for usability but added description noting it is common with the tab.
- Minor footprint deviation: small lead pad length is 2.00 mm instead of the datasheet land-pattern 1.90 mm. Flagged as low severity.
Overall conclusion
The part metadata, schematic pin mapping, package selection, and footprint are substantially consistent with the Microchip datasheet for MCP1825T-3302E/DC. No blocking pinout or package mismatch was found. The only remaining caveat is the small lead pad length being 0.10 mm longer than the extracted recommended land pattern, which is low risk but worth tightening if the goal is exact datasheet land-pattern fidelity.
Scope
Datasheet
Existing/updated part metadata
Key datasheet specs
Pinout cross-check
Pin description updates applied
Footprint / land pattern cross-check
Mismatches / issues found
Overall conclusion
