Part Metadata Audit and Review
Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.
Thought for 4 sec
I’ll audit the part metadata, find and set the official datasheet URL if missing, then compare symbol pins/footprint against the datasheet and record the findings in a concise review note.
Thought for 1 min 57 sec
I found existing part metadata with TI as manufacturer, MPN LMR33630AQRNXRQ1, and an official TI datasheet link already set; I’ll use the TI PDF for the detailed cross-check.
Worked for 3 mins 55 sec
Audit complete. The official TI datasheet URL was already present, and I updated the missing Part Type plus package metadata; targeted part-review checks are now clean. I created the detailed findings in Part Audit: LMR33630AQRNXRQ1, including key specs and flags: pin 4 is named
BST vs datasheet BOOT, pin descriptions could be enriched, NC must connect to SW on PCB, and the RNX0012A 3D model should be checked against the RNX0012B footprint.Fix pin metadata
Check 3D alignment
Run ERC/DRC
Document NC rule
Refine this doc
Ask about this doc
Part Audit: LMR33630AQRNXRQ1
Scope
Reviewed available part information for the Flux part project
LMR33630AQRNXRQ1, including MPN, manufacturer, package, pin count, description, project properties, symbol terminals, footprint assets, and datasheet-derived pin/package data.Source Datasheet
- Official Texas Instruments datasheet found via TI: https://www.ti.com/lit/ds/symlink/lmr33630-q1.pdf
- Existing project Datasheet URL was already set to: https://www.ti.com/lit/gpn/lmr33630-q1
- No datasheet update was required by the user rule because an official TI datasheet URL was already present.
Project Metadata Found / Updated
Table
| Field | Value | Status |
|---|---|---|
| Manufacturer Part Number | LMR33630AQRNXRQ1 | Matches datasheet orderable PN |
| Manufacturer Name | Texas Instruments | Matches datasheet |
| Datasheet URL | https://www.ti.com/lit/gpn/lmr33630-q1 | Official TI link present |
| Designator Prefix | U | Reasonable for IC |
| Part Type | DC-DC Converters | Was blank; updated during audit |
| Package or Case Code | VQFN-HR (RNX) | 12, RNX0012B, 3 x 2 x 0.85 mm | Added during audit |
| Description | LMR33630AQRNXRQ1 RNX0012B | Consistent with part/package |
Datasheet Key Specs
Table
| Parameter | Datasheet Value |
|---|---|
| Function | 3.8-V to 36-V, 3-A synchronous step-down voltage converter |
| Automotive qualification | AEC-Q100, temperature grade 1, -40°C to +125°C TA |
| Recommended VIN | 3.8 V to 36 V |
| Absolute max VIN to PGND | -0.3 V to 38 V |
| Adjustable VOUT | 1 V to 24 V |
| Output current | 0 A to 3 A |
| Feedback reference | 0.985 V min, 1 V typ, 1.015 V max |
| Switching frequency for A version | 340 kHz min, 400 kHz typ, 460 kHz max |
| Internal VCC LDO | 4.75 V min, 5 V typ, 5.25 V max for 6 V <= VIN <= 36 V |
| High-side current limit | 3.85 A min, 4.5 A typ, 5.05 A max |
| Low-side current limit | 2.9 A min, 3.5 A typ, 4.1 A max |
| Soft-start time | 2.9 ms min, 4 ms typ, 6 ms max |
| Package | VQFN-HR (RNX), 12 pins, 3 x 2 x 0.85 mm, 0.5 mm pitch |
| Orderable package quantity | LMR33630AQRNXRQ1: 3000 large tape and reel |
| Part marking | Z630AQ |
Datasheet Pinout vs Symbol/Footprint
Table
| Pin | Datasheet Name | Datasheet Function | Flux Symbol Terminal | Footprint Pad Present | Status |
|---|---|---|---|---|---|
| 1 | PGND | Power ground; connect to system ground and AGND | PGND | Yes | Match |
| 2 | VIN | Input supply; bypass directly to PGND | VIN | Yes | Match |
| 3 | NC | No internal connection; connect to SW on PCB for VQFN package | NC | Yes | Match; layout note required |
| 4 | BOOT | Bootstrap supply; 100 nF from BOOT to SW | BST | Yes, named BST | Naming mismatch: datasheet says BOOT, symbol uses BST |
| 5 | VCC | Internal 5-V LDO output; 1 uF to GND; no external loads | VCC | Yes | Match |
| 6 | AGND | Analog ground; connect to system ground | AGND | Yes | Match |
| 7 | FB | Feedback input; do not float or ground | FB | Yes | Match |
| 8 | PG | Open-drain power-good flag | PG | Yes | Match |
| 9 | EN | Enable input; high = on, low = off; do not float | EN | Yes | Match |
| 10 | VIN | Input supply | VIN | Yes | Match |
| 11 | PGND | Power ground | PGND | Yes | Match |
| 12 | SW | Switch node; connect to inductor; connect SW to NC on PCB | SW | Yes | Match |
Symbol Review
- Pin count: 12 terminals in Flux symbol; matches datasheet 12-pin RNX package.
- Pin numbers: match datasheet for all terminals.
- Pin names: match datasheet except pin 4, where datasheet uses
BOOTand symbol/footprint useBST. - Pin descriptions: symbol has basic Pin Type properties, but does not include the full datasheet pin descriptions. Consider adding datasheet-derived
Pin Descriptionmetadata for clarity. - Pin type observations:
PGND,VIN,VCC,AGND, andSWare broadly power-related, butSWis a switching node rather than a power input.PGis correctly treated as open-drain/open-collector style.NCis unspecified, acceptable, but its required PCB connection to SW should be documented.
Footprint / Asset Review
- Footprint asset:
RNX0012B.kicad_mod, marked as footprint. - 3D model asset:
RNX0012A.stp, marked as 3D model. - Symbol SVG asset exists and is default/thumbnail.
- Layout pads present: VCC, AGND, BST, SW, PGND x2, EN, FB, NC, VIN x2, PG = 12 pads total.
- Datasheet package: RNX0012B / VQFN-HR (RNX), 12 pins, 3 x 2 x 0.85 mm, 0.5 mm pitch.
- Footprint naming is consistent with RNX0012B. The 3D model is
RNX0012A.stp, while the part description/package references RNX0012B; this should be visually/mechanically checked because it may be a package revision mismatch.
Mismatches / Flags
- Pin 4 naming mismatch: datasheet name is
BOOT; Flux symbol/footprint useBST. Electrically this likely means bootstrap and is understandable, but for datasheet fidelity it should be renamed toBOOTor documented as an alias. - Pin descriptions are incomplete: current symbol properties do not carry the full datasheet pin descriptions. Adding
Pin Descriptionmetadata would improve library quality. - NC pin behavior is special: datasheet says VQFN NC has no internal connection but should be connected to SW on the PCB. This is not obvious from the symbol alone.
- 3D model revision differs: footprint is RNX0012B but 3D model is RNX0012A. Verify mechanical equivalence before relying on 3D clearance/enclosure checks.
- Package thermal note: datasheet package outline includes a note that the package thermal pad must be soldered to the PCB for thermal/mechanical performance. The current layout view shows 12 named pads and no separately named thermal pad; verify the imported RNX0012B footprint geometry includes any required thermal/mechanical copper features.
Review Check Result
After updating the blank Part Type and adding package metadata, the targeted part-review checks returned no remaining warnings/errors for the queried categories.
Welcome 👋
Flux accelerates your PCB design with AI.
Create your account to start using this component and bring your ideas to life.