Part Review and Datasheet Update
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 3 sec
I’ll inspect the part metadata, symbol/footprint/pins, find the official datasheet if needed, update the Datasheet property, then verify against the datasheet and summarize mismatches.
Worked for 3 mins 53 sec
Completed the TPS22991BRAAR part review and saved the full results in
TPS22991BRAAR Part Review (tps22991braar-part-review). The symbol pin numbers/names and footprint pad geometry match the TI datasheet; key flagged issues are metadata cleanup: Part Type is wrong, pin types/descriptions are unspecified, and the Datasheet URL is populated but not the canonical TI URL.Suggested next steps:
- Update Part Type to an IC/load-switch category.
- Populate pin types and pin descriptions.
- Optionally replace the Datasheet URL with TI’s canonical URL:
https://www.ti.com/lit/gpn/tps22991.
Fix metadata and verify
Fix part metadata
Use canonical datasheet
Run review checks
Check manufacturability
Refine this doc
Ask about this doc
TPS22991BRAAR Part Review
Existing project information
- Project / part name: TPS22991BRAAR
- Manufacturer Part Number: TPS22991BRAAR
- Manufacturer: Texas Instruments
- Description: Power Distribution 5 V, 3 A, 25 mOhm load switch with optional output discharge
- Existing Datasheet URL property: ac5c221f8099c0915cad193768668da1c43f18edcf5d090e4574e82037a85c8e.pdf
- Official TI datasheet found: https://www.ti.com/lit/gpn/tps22991 / https://www.ti.com/lit/ds/symlink/tps22991.pdf
- Existing Part Type property: Electromechanical Components
- Published Part UID: 4896fc3b-6dd5-4a36-96e5-d189d4a42275
- Schematic terminals / pin count: 4 terminals: VIN, ON, VOUT, GND
- Footprint: KiCad module named TPS22991BRAAR, description RAA0004A_2024-1, SMD, 4 pads
Datasheet cross-check source
The existing Datasheet URL property is already populated, so no Datasheet URL property update was required by the user request. I still cross-checked against the TI official TPS22991 datasheet / product page and the existing PDF content.
Datasheet key specs
- Device: single-channel integrated load switch
- Package/orderable: TPS22991BRAAR, UQFN-HR RAA, 4 pins, large tape-and-reel, active production
- Input voltage range: 1.0 V to 5.5 V
- Output voltage range: 0 V to 5.5 V
- Maximum continuous switch current: 3 A
- Maximum pulsed switch current: 4 A for 2 ms at 2% duty cycle
- Typical on-resistance: 25 mOhm at VIN = 5 V / 3.3 V / 1.8 V, 25 C
- Max on-resistance over -55 C to 125 C: 40 mOhm at VIN = 5 V / 3.3 V / 1.8 V; 60 mOhm at VIN = 1.0 V
- Quiescent current: 6 uA typ when enabled
- Shutdown current: 14 nA typ
- ON input: active-high, VIH 0.8 V to 5.5 V, VIL 0 V to 0.35 V, 500 kOhm typ pulldown
- Quick output discharge: TPS22991B has QOD; about 150 Ohm typ at VIN = 3.3 V
- Operating ambient temperature: -55 C to 125 C
- Package body: nominal 0.75 mm x 0.85 mm, 0.6 mm max height, 0.4 mm pitch
Pinout verification
Table
| Pin | Datasheet name | Datasheet description | Project terminal | Result |
|---|---|---|---|---|
| 1 | VIN | Switch input | VIN | Match |
| 2 | ON | Active-high switch control input | ON | Match |
| 3 | VOUT | Switch output | VOUT | Match |
| 4 | GND | Device ground | GND | Match |
Datasheet top-view package orientation: pin 1 VIN upper-left, pin 2 ON lower-left, pin 3 VOUT lower-right, pin 4 GND upper-right.
Footprint verification
Datasheet recommended land pattern:
- 4 pads
- Pad length: 0.475 mm
- Pad width: 0.2 mm
- Pad pitch: 0.4 mm
- Horizontal center span: 0.675 mm
- NSMD preferred; solder mask expansion 0.05 mm max all around
- Stencil: 4x 0.475 mm x 0.2 mm, 0.1 mm thick stencil basis
Project footprint from embedded KiCad module:
- Pad 1: at (-0.338, -0.2), size 0.200 x 0.475, rotated 90 deg
- Pad 2: at (-0.338, 0.2), size 0.200 x 0.475, rotated 90 deg
- Pad 3: at (0.338, 0.2), size 0.200 x 0.475, rotated 90 deg
- Pad 4: at (0.338, -0.2), size 0.200 x 0.475, rotated 90 deg
- Body fab outline: 0.75 mm x 0.85 mm
- Courtyard: 3.15 mm x 2.85 mm
Result: pad size, pitch, span, 4-pad count, and RAA0004A body outline match the datasheet recommended footprint geometry. Pin-1 marker exists near pad 1.
Mismatches / issues flagged
- Part Type property mismatch: project says
Electromechanical Components, but this is an integrated circuit / power distribution load switch. Recommended Part Type should be a semiconductor IC / load switch / power switch category if available. - Pin Type properties are all
Unspecified. Recommended logical pin types: VIN = Power/Input, ON = Input, VOUT = Power/Output, GND = Ground. - Pin descriptions are not populated beyond terminal names. Recommended descriptions: VIN = Switch input; ON = active-high switch control input; VOUT = switch output; GND = device ground.
- Datasheet URL property is populated but points to a Flux-hosted uploaded PDF, not the canonical TI URL. This is not a functional mismatch, but the official canonical URL would be https://www.ti.com/lit/gpn/tps22991 or https://www.ti.com/lit/ds/symlink/tps22991.pdf.
Overall result
The schematic terminal names/numbers and footprint pad geometry are consistent with the TPS22991BRAAR datasheet. The main cleanup items are metadata quality issues: Part Type, per-pin type, per-pin descriptions, and optionally replacing the existing uploaded datasheet URL with the canonical TI datasheet URL.
Existing project information
Datasheet cross-check source
Datasheet key specs
Pinout verification
Footprint verification
Mismatches / issues flagged
Overall result
