Part Metadata Audit and Updates

flux

2:07

Thought for a moment

1/4 Re-read current terminal properties for all BQ25620RYKR pins

Thought for 3 sec

Read schematic.

Thought for 3 sec

2/4 Rename mismatched terminals to TI datasheet pin names

Thought for 2 sec

Thought for 1 sec

3/4 Update terminal pin types and descriptions from TI datasheet

Thought for 11 sec

Thought for 7 sec

Thought for 3 sec

4/4 Verify updated symbol pins and properties

Thought for 4 sec

Read schematic.

Thought for 4 sec

Completed 4 design checks.

Thought for 2 sec

4/4 tasks completed.

Thought for a moment

Fixed and verified.
Changes made:
  • Renamed pins:
    • PMID_GD → PG
    • ILIM/D- → D-
    • TS_BIAS/D+ → D+
  • Added TI datasheet-based pin descriptions for all 18 terminals.
  • Updated pin types using valid Flux ERC categories:
    • Power pins mapped to Power In, Power Out, or Ground
    • Open-drain outputs mapped to Open Collector
    • SDA/D+/D- mapped to Bi-Directional
    • Control pins mapped to Input
The terminal review checks now return no issues.
adrian95

adrian95

Please also create the parametric symbol and place each pin into the correct section based on the datasheet.

flux

0:13

Thought for 10 sec

Thought for a moment

I’ll convert the symbol metadata to a parametric-style organization and assign each terminal to functional sections from the TI pin table, then verify the result.

flux

1:49

Thought for 2 sec

1/3 Inspect current symbol section and style metadata

Thought for 2 sec

Read schematic.

Thought for 7 sec

Thought for 4 sec

2/3 Set parametric symbol metadata and section assignments

Thought for 12 sec

Thought for 10 sec

Thought for 4 sec

3/3 Verify section assignments and review checks

Thought for 2 sec

Completed 4 design checks.

Read schematic.

Thought for 6 sec

3/3 tasks completed.

Thought for a moment

Done. I set all 18 terminals to Symbol Style: Parametric and assigned datasheet-based sections:
  • Power: BTST, REGN, BAT, SYS, SW, PMID, VBUS
  • Ground: GND
  • Communication: D+, D-, SDA, SCL
  • Analog: TS
  • Control: PG, STAT, ~INT, ~CE, ~QON
I also added pin groups, orientations, and terminal order values, then verified the part review checks return no issues.
Run ERC review
Check decoupling
Add capacitors
Review BOM

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BQ25620RYKR Part Audit
Scope
Reviewed available part metadata, project symbol terminals, footprint assets/layout pads, and the official Texas Instruments datasheet for BQ25620RYKR.
Official Datasheet
Available Part Information
  • MPN: BQ25620RYKR
  • Manufacturer: Texas Instruments
  • Function: I2C-controlled 1-cell Li-Ion/Li-Polymer synchronous buck charger with power-path management, ADC, and OTG support
  • Package: RYK / RYK0018A, WQFN-HR, 18 pins
  • Body size: 2.50 mm x 3.00 mm, 0.8 mm max height
  • Mounting: Surface mount
  • Project/library terminal count: 18
  • Footprint asset present: FP_IC_BQ25628RYKR / label IC_BQ25628RYKR.kicad_mod
  • Thumbnail asset present: image-removebg-preview.png
Key Datasheet Specs
  • Input operating range: 3.9 V to 18 V
  • Absolute maximum input voltage: 26 V
  • Fast charge current: up to 3.5 A
  • Switching frequency: 1.5 MHz
  • Battery regulation voltage: programmable 3.5 V to 4.8 V in 10 mV steps; typical/default application uses 4.2 V
  • Minimum system voltage: programmable; POR default 3.52 V
  • SYS regulation when battery is above VSYSMIN: typically VBAT + 50 mV
  • I2C interface: SDA/SCL, 7-bit address 0x6B
  • Protection: input UVLO/OVP, system/battery OVP, converter and battery overcurrent, thermal regulation/shutdown, safety timer, TS battery thermistor qualification

Datasheet Pin Table vs Current Symbol

PinDatasheet NameDatasheet TypeCurrent Symbol TerminalStatus
1BTSTPowerBTSTOK
2REGNPowerREGNOK
3PGOpen-drain outputPMID_GDMISMATCH: should be PG, not PMID_GD
4D-Analog I/OILIM/D-MISMATCH/legacy alternate label: BQ25620 pin is D-
5D+Analog I/OTS_BIAS/D+MISMATCH/variant-combined label: BQ25620 pin is D+; TS_BIAS applies to BQ25622 variant
6TSAnalog inputTSOK
7QONDigital input~QONOK polarity notation; datasheet name is QON
8BATPowerBATOK
9SYSPowerSYSOK
10STATOpen-drain outputSTATOK
11INTOpen-drain output~INTOK polarity notation; datasheet name is INT active-low pulse
12SDADigital I/OSDAOK
13SCLDigital inputSCLOK
14CEDigital input, active low~CEOK polarity notation
15GNDPower groundGNDOK
16SWPower switching nodeSWOK
17PMIDPowerPMIDOK
18VBUSPower inputVBUSOK
Pin Description / Type Mismatches
  • All project terminal Pin Type properties are currently Unspecified; the datasheet provides specific types: P, AI, AIO, DI, DO, DIO. These should be populated for ERC/library quality.
  • Several terminal names appear inherited from another charger variant or combined-family symbol:
    • Pin 3 must be PG; current PMID_GD is incorrect.
    • Pin 4 should be D-; current ILIM/D- is ambiguous and not exact for BQ25620.
    • Pin 5 should be D+; current TS_BIAS/D+ is ambiguous and includes BQ25622-specific TS_BIAS naming.
  • Open-drain pins PG, STAT, INT require pull-ups in an application schematic; symbol terminal type should reflect open-drain output where possible.
  • CE must be tied high or low and not left floating in application designs.
Footprint Cross-Check
  • Layout contains 18 pad nodes corresponding to the 18 symbol terminals, so pad count matches the datasheet pin count.
  • The footprint asset is named for BQ25628RYKR, not BQ25620RYKR. This is a naming and traceability mismatch.
  • The datasheet package for BQ25620RYKR is RYK WQFN-HR, 2.5 mm x 3.0 mm, 18 pins. The current footprint should be verified against TI RYK0018A land pattern dimensions before release because the available asset name indicates it may have been imported/generated for a different family member.
  • The layout pad designators mirror the current symbol terminal names, so the same pin-name mismatches appear in the footprint pad labels.
Part Property Issues
  • Datasheet URL, MPN, manufacturer, designator prefix, and Part Type are present in library metadata.
  • Library metadata includes part-type-specific values logicFunction: AND and icType: Logic, which do not match this charger IC and should be corrected/removed if editable.
Summary of Required Fixes
  1. Rename symbol terminal pin 3 from PMID_GD to PG.
  2. Rename symbol terminal pin 4 from ILIM/D- to D-.
  3. Rename symbol terminal pin 5 from TS_BIAS/D+ to D+.
  4. Update terminal pin descriptions and pin types to match the datasheet table.
  5. Rename or replace the footprint asset so it is traceable to BQ25620RYKR / TI RYK0018A, and verify physical land pattern dimensions against the datasheet.
  6. Remove incorrect logic-family metadata (logicFunction: AND, icType: Logic) from the part if those fields are editable.

    Scope

    Official Datasheet

    Available Part Information

    Key Datasheet Specs

    Datasheet Pin Table vs Current Symbol

    Pin Description / Type Mismatches

    Footprint Cross-Check

    Part Property Issues

    Summary of Required Fixes

Documents

    BQ25620RYKR Part Audit

Assets

kicad_mod

IC_BQ25628RYKR.kicad_mod

FP_IC_BQ25628RYKRFootprint
image-removebg-preview.png

image-removebg-preview.png

image-removebg-previewThumbnail

BQ25620RYKR

BQ25620RYKR thumbnail
Charger IC Lithium Ion/Polymer 18-WQFN-HR (3x2.5)
The BQ25620RYKR is a highly integrated standalone switch-mode battery charge management and system power-path management device designed for single-cell lithium-ion and lithium-polymer batteries. The device integrates a synchronous buck charger, power-path management, input current optimization, and system regulation functions into a compact package suitable for portable and battery-powered embedded systems. It supports USB and adapter power sources with high-efficiency charging operation and dynamic power management for optimized thermal and power performance.
The device includes integrated MOSFETs, charge termination, safety timers, input overvoltage protection, thermal regulation, and battery temperature monitoring. It supports I²C communication for programmable charging parameters, system monitoring, and fault reporting. The integrated narrow-voltage DC architecture improves efficiency while reducing external component count and PCB area.
Engineering Specification
Manufacturer: Texas Instruments
Device Type: Single-Cell Li-Ion/Li-Polymer Switching Battery Charger with Power-Path Management
Battery Chemistry Support: Lithium-Ion and Lithium-Polymer
Charging Topology: Synchronous Buck Converter
Input Supply Support: USB Power and External Adapter Sources
Input Voltage Operating Range: Wide Input Voltage Support with Input Overvoltage Protection
Charge Current Capability: High Current Fast Charging Support
System Power Path: Integrated Dynamic Power-Path Management
Communication Interface: I²C Serial Interface
Integrated MOSFETs: High-Side and Low-Side Power MOSFETs Included
Charging Functions:
Preconditioning Charge Fast Charge Charge Termination Recharge Function Safety Timer Control
Protection Features:
Input Overvoltage Protection Battery Overvoltage Protection Thermal Shutdown Thermal Regulation Charge Safety Timer Input Current Limiting Short-Circuit Protection
Battery Monitoring Features:
Battery Temperature Monitoring via NTC Charge Status Reporting Fault Status Reporting System Voltage Regulation
Power Management Features:
Narrow Voltage DC Regulation Dynamic Input Power Management Input Current Optimization Automatic Power Source Detection
Package Type: WQFN Package
Package Variant: RYK
Mounting Type: Surface Mount
Application Areas:
Portable Electronics Embedded Battery-Powered Systems Handheld Devices USB-Powered Equipment Industrial Portable Devices IoT Systems Consumer Electronics
#commonpartslibrary #integratedcircuit #powermanagement #batterycharger

Properties

Integrated Circuit

Texas Instruments

BQ25620RYKR

ti.com/lit/ds/symlink/bq25620.pdf

U

creativecommons.org/licenses/by/4.0/

parametric-v1

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