Part Datasheet Review
Worked for 1 min 35 sec
I found the official TI LM5013-Q1 datasheet and confirmed the library part currently has an empty Datasheet URL property; I’m updating that next and then validating pins/package against the PDF.
Worked for 5 mins 25 sec
Created a project doc
LM5013QDDARQ1 Part Review
Date: 2026-07-21 Official datasheet: https://www.ti.com/lit/ds/symlink/lm5013-q1.pdf
Completed the LM5013QDDARQ1 audit and set the Datasheet URL to the official TI PDF. I created the full review here: LM5013QDDARQ1 Part Review.
Open items:
- Type-specific metadata is wrong: it reports Logic / AND instead of a buck regulator.
- Pin Type and Pin Description fields are missing/unspecified.
- Footprint pitch/order look correct, but pad sizes are slightly smaller than TI’s example land pattern.
Suggested next steps:
- Update pin types/descriptions from the datasheet.
- Correct IC metadata to Power Management / Buck Regulator.
- Decide whether to revise the footprint to TI’s example land pattern.
Fix metadata and pins
Fix metadata
Populate pin data
Revise footprint
Run review after fixes
Refine this doc
Ask about this doc
LM5013QDDARQ1 Part Review
Date: 2026-07-21
Source reviewed
- Official datasheet: https://www.ti.com/lit/ds/symlink/lm5013-q1.pdf
- TI product family: LM5013-Q1 automotive 100-V input, 3.5-A non-synchronous buck DC/DC converter.
Existing Flux part information after datasheet update
Table
| Field | Observed value |
|---|---|
| Part name / MPN | LM5013QDDARQ1 |
| Manufacturer | Texas Instruments |
| Description | Buck Switching Regulator IC Positive Adjustable 1.2V 1 Output 3.5A 8-PowerSOIC (0.154 in, 3.90 mm width) |
| Terminal count | 9 Flux terminals: 8 package leads plus exposed pad terminal |
| Datasheet URL | https://www.ti.com/lit/ds/symlink/lm5013-q1.pdf |
| Part Type | Integrated Circuit |
| Designator Prefix | U |
| Package property | No explicit Package or Case Code property observed in the library search result; package is implied by MPN suffix DDA and description. |
| Type-specific values | Reported as IC Type = Logic and Logic Function = AND in library metadata; this does not match the datasheet. |
Datasheet key specs
Table
| Spec | Datasheet value |
|---|---|
| Function | Automotive non-synchronous step-down buck DC/DC converter |
| Input voltage range | 6 V to 100 V recommended operating range |
| Output current | Up to 3.5 A max; 3.0 A nominal listed in recommended operating conditions |
| Control architecture | Constant on-time (COT), no external loop compensation components |
| Integrated switch | 100-V high-side NMOS, typical RDS(on) 0.25 ohm |
| Feedback reference | 1.2 V typical, 1.181 V min, 1.218 V max |
| Switching frequency limit | Up to 1 MHz |
| Minimum programmable on-time | 50 ns |
| Quiescent current | 10 uA typ sleep current; 3.1 uA typ shutdown current |
| PGOOD | Open-drain output; datasheet recommends 10 kΩ to 100 kΩ pull-up |
| Bootstrap capacitor | 2.2 nF, 50 V X7R ceramic between BST and SW |
| Package | SO PowerPAD (DDA), 8 pins, 1.27 mm pitch, body nominal 4.89 mm x 3.90 mm, 1.7 mm max height |
| Operating temperature | -40°C to 150°C junction / orderable addendum op temp -40°C to 150°C |
| Qualification | AEC-Q100 automotive, device temperature grade 1 ambient -40°C to +125°C |
| Orderable status | Active / Production per TI package addendum |
Pin table cross-check
Table
| Datasheet pin | Flux terminal | Datasheet type | Datasheet description | Result |
|---|---|---|---|---|
| GND, pin 1 | GND, pin 1 | G | Ground connection for internal circuits | Pin number/name match. Flux Pin Type is Unspecified and no detailed Pin Description is present. |
| VIN, pin 2 | VIN, pin 2 | P/I | Regulator supply input to high-side power MOSFET and internal bias regulator | Pin number/name match. Flux Pin Type is Unspecified and no detailed Pin Description is present. |
| EN/UVLO, pin 3 | EN/UVLO, pin 3 | I | Precision enable and UVLO programming pin | Pin number/name match. Flux Pin Type is Unspecified and no detailed Pin Description is present. |
| RON, pin 4 | RON, pin 4 | I | On-time programming pin; resistor to GND sets buck switch on-time | Pin number/name match. Flux Pin Type is Unspecified and no detailed Pin Description is present. |
| FB, pin 5 | FB, pin 5 | I | Feedback input of voltage regulation comparator | Pin number/name match. Flux Pin Type is Unspecified and no detailed Pin Description is present. |
| PGOOD, pin 6 | PGOOD, pin 6 | O | Open-drain power-good indicator | Pin number/name match. Flux Pin Type is Unspecified and no detailed Pin Description is present. |
| BST, pin 7 | BST, pin 7 | P/I | Bootstrap gate-drive supply; requires 2.2 nF to SW | Pin number/name match. Flux Pin Type is Unspecified and no detailed Pin Description is present. |
| SW, pin 8 | SW, pin 8 | P | Switching node to inductor and Schottky diode | Pin number/name match. Flux Pin Type is Unspecified and no detailed Pin Description is present. |
| EP exposed pad | EPAD, pin 9 | No internal electrical connection | Connect EP to GND pin and large copper plane for thermal performance | Flux exposes this as terminal 9 named EPAD. This is acceptable for PCB connectivity, but the datasheet does not assign a numbered electrical pin to EP. |
Schematic symbol check
- Symbol exposes the correct functional pins: GND, VIN, EN/UVLO, RON, FB, PGOOD, BST, SW, and EPAD.
- Pin-number mapping matches datasheet Table 5-1.
- Symbol has 9 terminals while TI calls the device an 8-pin SO PowerPAD package. This is expected if the exposed pad is represented as pad/terminal 9, but the part description should remain clear that it is an 8-pin package plus exposed pad.
- Pin descriptions and electrical Pin Type properties are not populated: all inspected terminal Pin Type values are Unspecified. This weakens ERC quality and is the main symbol metadata issue.
Footprint check
Datasheet land pattern for DDA0008B PowerPAD SOIC shows:
- 8 signal pads: 1.55 mm x 0.60 mm
- Signal pad pitch: 1.27 mm
- Row-to-row / outer land span: 5.4 mm
- Exposed pad / thermal pad solder mask opening: 2.71 mm x 3.4 mm
- Package body nominal from device information: 4.89 mm x 3.90 mm
Observed Flux footprint:
- 8 signal pads plus EPAD are present.
- Signal pad pitch appears correct at 1.27 mm.
- Signal pad row spacing appears aligned with the 5.4 mm land pattern span.
- Signal pad size appears to be about 1.46 mm x 0.559 mm, slightly smaller than the TI example 1.55 mm x 0.60 mm.
- EPAD appears to be about 2.388 mm x 3.099 mm, smaller than the TI example 2.71 mm x 3.4 mm.
- Existing silkscreen text identifies the source footprint as POWERPAD8_DDA_TEX / Accelerated Designs.
Mismatches / issues flagged
- Datasheet URL was missing — fixed by setting the Datasheet URL to the official TI PDF.
- Incorrect type-specific library metadata — library search reports IC Type = Logic and Logic Function = AND, but the part is a power-management buck regulator. Recommended correction: set IC type/category to Power Management / Buck Switching Regulator and remove the AND logic function metadata.
- Pin Type values are Unspecified — all terminals should be assigned datasheet-backed electrical types: GND = Ground, VIN/BST/SW = Power or Power/Input as appropriate, EN/UVLO/RON/FB = Input, PGOOD = Output/Open Drain, EPAD = Passive or Power/Ground depending on Flux ERC convention.
- Pin Description fields are missing — terminal descriptions should be populated from datasheet Table 5-1 for better schematic review and reuse.
- Explicit package property not observed — the part should ideally include Package or Case Code = SO PowerPAD (DDA) / DDA0008B / 8-PowerSOIC, not only rely on the MPN suffix and description.
- Footprint pad dimensions are slightly smaller than TI example land pattern — signal pads are about 1.46 x 0.559 mm versus TI example 1.55 x 0.60 mm, and EPAD is about 2.388 x 3.099 mm versus TI example 2.71 x 3.4 mm. Pitch and pin order appear correct. TI notes IPC-7351 alternate designs may exist, so this is a manufacturability/land-pattern preference flag rather than a confirmed fatal error.
Recommended next corrections
- Update type-specific metadata to Power Management / Buck Regulator.
- Populate per-pin Pin Type and Pin Description from Table 5-1.
- Add or correct explicit package property to SO PowerPAD (DDA), 8-PowerSOIC, DDA0008B.
- Decide whether to keep the current IPC/Accelerated Designs land pattern or revise pads to TI's example land pattern dimensions.
Source reviewed
Existing Flux part information after datasheet update
Datasheet key specs
Pin table cross-check
Schematic symbol check
Footprint check
Mismatches / issues flagged
Recommended next corrections
