Part Audit Review
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I’m reading the current metadata, terminal definitions, rendered symbol, and PCB land pattern now; next I’ll compare them to the manufacturer package drawing and pin table.
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Part Audit Report
Part Audit Report
Scope
Audit of the published MAX17301G+ part metadata, schematic symbol terminals, PCB footprint, and available manufacturer documentation.
Authoritative sources
- Official datasheet: https://www.analog.com/MAX17301/datasheet
- Official package outline 21-0137 (T1433-2C): https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/tdfn-ep/21-0137.pdf
- Datasheet identifies the recommended land-pattern drawing as 90-0063; the direct public URL tested returned 404, so exact paste and recommended PCB-land dimensions could not be independently verified from that drawing.
- Function: Stand-alone pack-side 1-cell Li-ion/Li-polymer ModelGauge m5 EZ fuel gauge with 2-level protector.
Audit complete. The official Analog Devices datasheet URL was already set, and all 14 lead names/numbers plus the exposed pad match; however, the description incorrectly claims self-discharge detection, terminal descriptions/types are missing, and package metadata is incomplete. The exposed-pad paste pattern also remains unverified because ADI land-pattern drawing 90-0063 was unavailable.
Full findings and specifications: Part Audit Report.
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Part Audit Report
Scope
Audit of the published MAX17301G+ part metadata, schematic symbol terminals, PCB footprint, and available manufacturer documentation.
Authoritative sources
- Official datasheet: https://www.analog.com/MAX17301/datasheet
- Official package outline 21-0137 (T1433-2C): https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/tdfn-ep/21-0137.pdf
- Datasheet identifies the recommended land-pattern drawing as 90-0063; the direct public URL tested returned 404, so exact paste and recommended PCB-land dimensions could not be independently verified from that drawing.
Current part information
Table
| Field | Current value | Assessment |
|---|---|---|
| MPN | MAX17301G+ | Correct |
| Manufacturer | Analog Devices | Correct (device originated under Maxim Integrated) |
| Description | 1-Cell ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection and SHA-256 Authentication | Partially incorrect: internal self-discharge detection is listed for MAX17300/MAX17310 only, not MAX17301G+ |
| Datasheet URL | https://www.analog.com/MAX17301/datasheet | Present and official; no update required |
| Package metadata | No explicit Package or Case Code property found | Missing; should identify 14 TDFN-EP, 3 mm x 3 mm, package code T1433+2C |
| Terminal/pad count | 15 terminal objects / 15 copper pads | Physically appropriate when counted as 14 perimeter leads plus exposed pad; should not be described as a 15-pin package |
| Part type / electrical metadata | Terminal objects are Unspecified; no meaningful pin types/descriptions/groups | Incomplete |
Key specifications
- Function: Stand-alone pack-side 1-cell Li-ion/Li-polymer ModelGauge m5 EZ fuel gauge with 2-level protector.
- Authentication: SHA-256 with a 160-bit secret key and unique 64-bit ID.
- Interface: I2C for MAX17301G+; multifunction pins retain family naming such as SDA/DQ and SCL/OD.
- Recommended operating VBATT: 2.3 V to 4.9 V.
- Operating temperature: -40 C to +85 C.
- Typical supply current: 24 uA active, 18 uA hibernate; lower-current ship/deep-ship modes are available.
- Measurement: 78.125 uV voltage resolution; current-sense input range +/-51.2 mV and 1.5625 uV resolution.
- Package: 14-lead TDFN-EP, 3.0 mm x 3.0 mm x 0.75 mm nominal, 0.40 mm pitch, package code T1433+2C.
- Package exposed pad: 1.70 mm x 2.30 mm nominal package metal; connect EP to CSP for normal operation.
Pinout cross-check
All current pin numbers and names match the TDFN pin table:
Table
| Pin | Current name | Datasheet function summary | Result |
|---|---|---|---|
| 1 | TH | External thermistor connection | Match |
| 2 | CP | Charge-pump output; bypass to BATT | Match |
| 3 | BATT | Battery supply and voltage-sense input | Match |
| 4 | PFAIL | Optional permanent-failure indicator | Match |
| 5 | CSP | Sense-resistor positive input and TDFN IC ground | Match |
| 6 | CSN | Sense-resistor negative input | Match |
| 7 | REG | 1.8 V regulator output | Match |
| 8 | SDA/DQ | Open-drain serial data I/O | Match |
| 9 | SCL/OD | I2C clock input / family 1-Wire speed selection | Match |
| 10 | ALRT/PIO | Active-low open-drain alert / pushbutton wakeup | Match |
| 11 | PCKP | Pack-positive terminal sensing | Match |
| 12 | DIS | Discharge N-FET control | Match |
| 13 | ZVC | Zero-volt charge recovery configuration | Match |
| 14 | CHG | Charge N-FET control | Match |
| EP | EP | Exposed pad; connect to CSP | Match |
Symbol deficiencies
- Every terminal has
Pin Type = Unspecified. - Pin Description is missing for every terminal.
- Pin Group, Section, orientation metadata, and terminal order are not populated as semantic properties.
- The symbol geometry and left/right grouping are readable, but the absent electrical types reduce ERC usefulness.
- Suggested electrical classifications include: TH input; CP/REG power outputs; BATT power input; CSP/EP ground; CSN analog input; SDA/DQ bidirectional open-drain; SCL/OD input; ALRT/PIO open-drain/bidirectional multifunction; PFAIL output; PCKP analog input; DIS/CHG outputs; ZVC input.
Footprint cross-check
Confirmed matches
- 14 perimeter pads plus one exposed pad.
- 0.40 mm lead pitch.
- 3 mm x 3 mm body outline.
- Pin-1 marker and top-view numbering sequence are consistent: pins 1-7 run up the left side and pins 8-14 run down the right side.
- Perimeter copper pads are 0.20 mm wide x 0.75 mm long, a plausible land pattern for the 0.20 +/-0.05 mm package leads.
- Exposed copper pad is 1.80 mm x 2.40 mm, 0.10 mm larger in each axis than the nominal 1.70 mm x 2.30 mm package exposed metal, which is a plausible solder land allowance.
Risks / unverified details
- The exposed pad currently uses one solid 1.80 mm x 2.40 mm paste aperture. Large exposed pads commonly require a segmented/reduced paste pattern to limit float and voiding. The official 90-0063 land-pattern drawing was unavailable at the tested public URL, so the exact Analog Devices paste recommendation could not be confirmed.
- The footprint file description says
T1433+2C, while the package outline drawing usesT1433-2C; the datasheet states suffix symbols indicate RoHS status and the drawing still applies, so this is not a geometry mismatch. - Courtyard is 4.25 mm x 3.60 mm. No mismatch was established, but it was not compared against the unavailable official land-pattern drawing.
Mismatches and priority
- High — Incorrect description: MAX17301G+ should not claim internal self-discharge detection; that feature is specified for MAX17300/MAX17310 only.
- Medium — Missing terminal descriptions/types: Pin names and numbers are correct, but all 15 terminals lack datasheet-backed descriptions and meaningful electrical types, weakening ERC and reuse quality.
- Medium — Missing package property: Add
Package or Case Code = 14 TDFN-EP, 3 mm x 3 mm, T1433+2Cor the closest canonical package value supported by the property system. - Low/medium — EP paste pattern requires confirmation: The solid paste aperture may differ from the manufacturer-recommended stencil pattern; verify against land-pattern drawing 90-0063 or assembly-house guidance before production.
- Informational — Pin-count wording: The device is a 14-lead package with an exposed pad, although the Flux footprint correctly contains 15 electrical/copper pad objects.
Overall assessment
The MPN, manufacturer, official datasheet link, package family, footprint pitch, pad numbering, and complete logical pin-name mapping are correct. The part needs metadata cleanup—especially removal of the unsupported self-discharge claim and addition of pin descriptions/electrical types—before it should be considered a high-quality reusable library part. The footprint appears dimensionally plausible, but the EP stencil pattern remains unverified because the referenced official land-pattern document was not publicly accessible at the tested URL.
Scope
Authoritative sources
Current part information
Key specifications
Pinout cross-check
Symbol deficiencies
Footprint cross-check
Confirmed matches
Risks / unverified details
Mismatches and priority
Overall assessment
