Chat

How can I help you?
Explain this part
Write a part description
Describe each pin
Sign up to send

Files

Pins

Symbol

Layout

Preview

FB/VSET_2
Pin Number
13
GND_1
Pin Number
4
SS/TR
Pin Number
8
VIN
Pin Number
6
FB/VSET_1
Pin Number
9
MODE/S-CONF_2
Pin Number
12
GND_2
Pin Number
11
PG
Pin Number
1
SW
Pin Number
2
EN
Pin Number
5
VOS_1
Pin Number
3
VOS_2
Pin Number
10
MODE/S-CONF_1
Pin Number
7
Part Audit
Scope
Reviewed the current part metadata, schematic terminals, PCB footprint, and 3D asset against the official Texas Instruments documentation for TPS62903QRYTRQ1.
Official datasheet: https://www.ti.com/lit/ds/symlink/tps62903-q1.pdf
Metadata Review

Table

FieldCurrent valueDatasheet / manufacturer valueResult
Manufacturer part numberTPS62903QRYTRQ1TPS62903QRYTRQ1Match
ManufacturerTexas InstrumentsTexas InstrumentsMatch
DescriptionAutomotive, 3-V to 18-V, 3-A, low-IQ synchronous buck converter with +165°C TJAutomotive synchronous step-down DC/DC converterMatch
Part TypeLinear RegulatorSynchronous buck / switching voltage regulatorMismatch
Package or Case CodeTORYT, VQFN-HR, 9 electrical pins, 2.20 mm × 2.00 mm nominal bodyMismatch
Terminal count in Flux139 electrical pins; TI land pattern uses 13 physical solder landsAcceptable only if duplicate lands are intentionally mapped
Datasheet URLOfficial TI datasheet URL is already set in the library propertyOfficial TI PDFMatch; no update required
LifecycleActiveActiveMatch
Key Specifications
  • Input voltage: 3.0 V to 18 V recommended operating range.
  • Output voltage: 0.4 V to 5.5 V.
  • Continuous output current: up to 3 A.
  • Typical quiescent current: 4 µA in power-save mode with no switching.
  • Selectable switching frequency: 1.0 MHz or 2.5 MHz.
  • Operating junction temperature: −40°C to +165°C.
  • Package: RYT0009A VQFN-HR, nominal 2.20 mm × 2.00 mm, maximum height 0.9 mm.
  • Automotive qualified and functional-safety capable.
Symbol and Terminal Cross-Check
The nine datasheet electrical pins are PG, SW, VOS, GND, EN, VIN, MODE/S-CONF, SS/TR, and FB/VSET. The Flux part exposes 13 terminals because four package contacts are split into additional physical lands:

Table

Flux terminalFlux nameExpected electrical functionResult
1PGOpen-drain power-good output; requires pull-upName matches
2SWSwitching node; connect to inductorMatch
3VOS_1Output voltage senseFunction matches; duplicate-land suffix is nonstandard
4GND_1GroundFunction matches; duplicate-land suffix is nonstandard
5ENEnable input; must not floatMatch
6VINInput supplyMatch
7MODE/S-CONFMode and SmartConfig input; must not floatMatch
8SS/TRSoft-start / tracking inputMatch
9FB/VSET_1Feedback or output-voltage-setting inputFunction matches; duplicate-land suffix is nonstandard
10VOS_2Additional VOS package landPlausible duplicate-land mapping
11GND_2Additional ground package landPlausible duplicate-land mapping
12MODEAdditional MODE/S-CONF package landNaming mismatch: should retain MODE/S-CONF identity
13FB/VSET_2Additional FB/VSET package landPlausible duplicate-land mapping
Pin-description issue
All Flux terminal Pin Type fields are currently Unspecified, and no functional pin descriptions are stored. The datasheet defines PG as an output; VOS, EN, VIN, MODE/S-CONF, SS/TR, and FB/VSET as inputs; SW and GND are power/switch nodes. This is a metadata-quality mismatch that can reduce symbol clarity and ERC usefulness.
Footprint Cross-Check
Geometry
The footprint has 13 copper lands, consistent with TI's RYT0009A land-pattern drawing even though the device is marketed as a 9-pin package. Land sizes and principal spacing in the footprint align with the TI example:
  • 13 lands at approximately 0.25 mm width.
  • Six long perimeter lands approximately 0.875 mm long.
  • Four short lands approximately 0.4 mm long.
  • Two 0.5-mm-pitch side groups and center-axis lands consistent with the package drawing.
No obvious pad-count or land-pattern geometry mismatch was found.
Footprint asset naming
The embedded footprint asset is named TPS62901QRYTRQ1.kicad_mod, not TPS62903QRYTRQ1. TPS62901 and TPS62903 share the RYT package family, so the geometry can still be valid, but the filename is misleading and should be renamed or documented to avoid traceability errors.
Pin-1 indication and courtyard
A pin-1 marker is present. The courtyard is substantially larger than the nominal 2.20 mm × 2.00 mm package body; this is conservative rather than electrically incorrect, but it may unnecessarily constrain dense placement.
3D Model
The attached model is named TPS62903QRYTRQ1.stp and is rotated 180° in the layout asset. The current inspection confirms the model is present, but does not prove physical alignment or seating against the pads. A visual 3D alignment check is recommended before publishing.
Flagged Mismatches
  1. Part Type is wrong: Linear Regulator should be a switching regulator / synchronous buck converter classification.
  2. Package code is wrong: TO should be RYT / VQFN-HR-9 (with 13 solder lands in the TI land pattern).
  3. Pin descriptions and electrical types are missing: all 13 terminals are marked Unspecified.
  4. Terminal 12 naming is incomplete: MODE should preserve MODE/S-CONF and be clearly identified as a duplicate physical land.
  5. Footprint filename references TPS62901: likely package-compatible, but poor traceability.
  6. Pin-count presentation needs clarification: 13 Flux terminals represent 13 physical lands, while manufacturer package data specifies 9 electrical pins.
  • Change Part Type to Switching Voltage Regulator or Buck Converter.
  • Change Package or Case Code to RYT (VQFN-HR-9, 2.20 mm × 2.00 mm).
  • Populate pin electrical types and datasheet descriptions.
  • Rename duplicate terminals consistently, for example VOS.1/VOS.2, GND.1/GND.2, MODE/S-CONF.1/.2, and FB/VSET.1/.2, while preserving their common electrical identity.
  • Rename the footprint asset to match TPS62903QRYTRQ1 or to the generic package name RYT0009A.
  • Perform a visual 3D model-to-pad alignment check.

  • Scope

  • Metadata Review

  • Key Specifications

  • Symbol and Terminal Cross-Check

  • Pin-description issue

  • Footprint Cross-Check

  • Geometry

  • Footprint asset naming

  • Pin-1 indication and courtyard

  • 3D Model

  • Flagged Mismatches

  • Recommended Corrections