Part Datasheet Audit
Worked for 6 mins 30 sec
Created a project doc
Part Datasheet Audit
Part Datasheet Audit
Official documentation
- Product page: https://www.st.com/en/automotive-analog-and-power/l9396.html
- Datasheet: https://www.st.com/resource/en/datasheet/l9396.pdf
- Layout/configuration application note: https://www.st.com/resource/en/application_note/an5702-l9396-configuration-and-layout-stmicroelectronics.pdf
- Errata: https://www.st.com/resource/en/errata_sheet/es0562-l9396-multiple-power-supply-ic-stmicroelectronics.pdf
The existing Datasheet URL property already points to the official ST PDF, so no property update was necessary.
Existing metadata
- MPN: L9396 — match
- Manufacturer: STMicroelectronics — match
- Description: Automotive multiple power supply IC — match
- Datasheet URL: official ST datasheet — match
Audit complete. The existing Datasheet URL already points to the official ST L9396 datasheet, so no update was needed.
Key issues: the exposed pad is 6 × 6 mm instead of the specified 4.5 × 4.5 mm, Part Type is incorrectly set to Inductors, package metadata is missing, and all 65 terminals lack descriptions, electrical types, and grouping metadata. Full findings are in Part Datasheet Audit.
Suggested next steps
- Correct the exposed-pad footprint geometry.
- Populate pin descriptions/types and repair symbol rendering.
- Correct the part classification and package properties.
- Confirm the exposed-pad electrical connection with ST before assigning a net.
Organize the terminals into proper pin groups, sections, orientations, and terminal order.
Thought for 11 sec
I’ll organize all 65 terminals into datasheet-based functional groups, keep Section equal to Pin Group, apply consistent side orientations, and verify the regenerated symbol for completeness and readability.
Worked for 2 mins 52 sec
Organized all 65 terminals into 10 datasheet-based functional groups. Every terminal now has a matching Pin Group and Section, consistent orientation, and unique pin-number-ordered Terminal Order.
- Power: Top
- Ground: Bottom
- Analog, wheel-speed, motor-pump, and reserved: Left
- Fail-safe, VCORE, switching regulators, and digital interface: Right
Pin names, numbers, footprint mappings, and assets were preserved. EP remains grouped under Ground without asserting an undocumented electrical net.
Fix metadata and pins
Correct exposed pad
Repair symbol rendering
Run part review
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Part Datasheet Audit
Official documentation
- Product page: https://www.st.com/en/automotive-analog-and-power/l9396.html
- Datasheet: https://www.st.com/resource/en/datasheet/l9396.pdf
- Layout/configuration application note: https://www.st.com/resource/en/application_note/an5702-l9396-configuration-and-layout-stmicroelectronics.pdf
- Errata: https://www.st.com/resource/en/errata_sheet/es0562-l9396-multiple-power-supply-ic-stmicroelectronics.pdf
The existing Datasheet URL property already points to the official ST PDF, so no property update was necessary.
Existing metadata
- MPN: L9396 — match
- Manufacturer: STMicroelectronics — match
- Description: Automotive multiple power supply IC — match
- Datasheet URL: official ST datasheet — match
- Published part UID:
3560c4cb-8c07-4c36-b99f-cd03619f5ae3 - Part Type:
Inductors— incorrect; this is a power-management IC - Package/case property: missing; expected TQFP64EP, 10 x 10 x 1 mm, 0.5 mm pitch
- Lifecycle: ST marks the device NRND; not represented in current metadata
Key specifications
- Automotive multiple-power-supply/System Basis Chip
- AEC-Q100 qualified; ISO 26262 compliant and ASIL-D systems ready
- Battery operation: 4.5–19 V with boost (6 V startup), or 6–19 V without boost
- Ambient temperature: -40 to +135 degC; junction: -40 to +175 degC
- Buck pre-regulator: 6.5/7.2 V, 1 A, 465 kHz
- Boost regulator: 9 V, 300 mA, 2 MHz
- Integrated LDO: 5 V, 250 mA
- Configurable LDO: 3.3/5 V, 100 mA
- External-FET VCORE regulator: 0.8–5 V; up to 1 A buck or 750 mA linear
- SPI, dual watchdog, four WSS/tracking channels, 10-bit ADC, fail-safe and pump FET pre-drivers
- Package: TQFP64EP; 64 leads plus exposed pad; official die pad Option A is 4.5 x 4.5 mm
Symbol and terminal audit
Pins 1–64 have the correct pin numbers and names versus the official pin table. However, all 65 terminal records have
Pin Type = Unspecified and lack Pin Description, Pin Group, Section, Pin Orientation, and Terminal Order metadata.This means the symbol does not encode the preferred organization rules: broad functional groups, Section equal to Pin Group, Power first/Top, Ground last/Bottom, and consistent Left/Right assignment for other groups. The custom SVG symbol also renders labels poorly, with outlined or unreadable glyphs.
Every physical pin 1–64 is missing its datasheet description and electrical type. Important examples include:
- Pin 14 GNDA: analog ground; should be a supply/ground type
- Pin 24 VB: battery-line supply input
- Pin 38 VCC: 3.3/5 V MCU I/O supply
- Pin 39 VCC5: 5 V supply output
- Pin 49 RESET: reset output
- Pins 55–59: SPI SDO, SDI, CLK, PRN, CS with appropriate input/output types
- Pin 53 NU: not used, but the datasheet explicitly requires connection to ground; this instruction is absent
- Pin 54 GNDD and pin 52 GNDBST: ground pins, currently unspecified
Exposed-pad mismatch
The project adds terminal 65 / EP, mapped to the central exposed pad. The official pin table ends at pin 64 and does not define the exposed pad as electrical pin 65 or state its net assignment. Do not assume EP connects to GNDA, GNDD, GNDBST, or another net without ST confirmation.
Footprint audit
Matches
- 64 perimeter pads at 0.5 mm pitch
- Pin sequence and names 1–64 match the official top-view pinout
- 10 x 10 mm body and approximately 12 x 12 mm lead span
- Pin-1 marking present
- All 64 leads have mapped perimeter pads
Mismatches and concerns
- The central exposed pad is 6 x 6 mm, while the L9396 datasheet specifies Option A, 4.5 x 4.5 mm.
- Footprint name
QFP50P1200X1200X120-65Nimplies 65 lands, although the official device is 64 leads plus an exposed pad that is not documented as an electrical pin. - The EP uses one full 6 x 6 mm paste aperture; no reviewed official source supports that geometry.
- No segmented paste pattern or thermal-via array is present. ST does not provide a definitive L9396-specific stencil/via pattern in the reviewed documents, so this is a design concern rather than a proven datasheet violation.
- Footprint description says TQFP64 rather than the more specific TQFP64EP.
Priority findings
- Critical mechanical mismatch: resize/rebuild the exposed-pad land from 6 x 6 mm to the official 4.5 x 4.5 mm geometry, with stencil/via details resolved before fabrication.
- Metadata error: correct Part Type from Inductors to an automotive power-management IC classification and add TQFP64EP package metadata.
- Pin metadata incomplete: populate descriptions and electrical types for pins 1–64; preserve the official names and numbering.
- EP ambiguity: confirm the exposed-pad electrical connection with ST before assigning a net or treating it as pin 65.
- Symbol quality: repair the custom symbol rendering and add broad functional grouping metadata.
No audit-only mismatches were corrected during this review.
Official documentation
Existing metadata
Key specifications
Symbol and terminal audit
Exposed-pad mismatch
Footprint audit
Matches
Mismatches and concerns
Priority findings
