Part Metadata Audit and Update

2:32

Thought for 2 sec

1/4 Read current BQ25622RYKR terminal properties

Thought for 2 sec

Read schematic.

Thought for 2 sec

2/4 Rename mismatched symbol pins to datasheet names

Thought for 2 sec

Thought for 3 sec

3/4 Update pin descriptions and pin types for all 18 terminals

Thought for 7 sec

Thought for 6 sec

Thought for 5 sec

4/4 Verify symbol pin names and metadata after updates

Thought for 5 sec

Read schematic.

Thought for 5 sec

Thought for 2 sec

Read schematic.

Thought for 3 sec

4/4 tasks completed.

Thought for a moment

Fixed the BQ25622RYKR symbol metadata to match the TI datasheet.

Changes made:

Renamed PMID_GD → PG
Renamed ILIM/D- → ILIM
Renamed TS_BIAS/D+ → TS_BIAS
Added datasheet-based pin descriptions for all 18 pins
Updated pin types using standard Flux values, including open-drain outputs as Open Collector, I²C SDA as Bi-Directional, and power pins as Power In / Power Out

I verified the final symbol: all 18 pin numbers, names, descriptions, and pin types are now aligned with the TI BQ25622 pin table.

adrian95

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

flux

0:16

Thought for 13 sec

Thought for a moment

I’ll convert the symbol metadata to parametric style, group pins into datasheet-based functional sections, and verify the section/order fields afterward.

flux

2:23

Thought for 3 sec

1/3 Inspect current symbol section/order metadata

Thought for 2 sec

Read schematic.

Thought for 6 sec

2/3 Set parametric symbol style and functional pin sections

Thought for 14 sec

Thought for 9 sec

Thought for 8 sec

3/3 Verify section placement and parametric metadata

Thought for 5 sec

Read schematic.

Thought for 1 sec

3/3 tasks completed.

Thought for a moment

Done. I set all 18 terminals to parametric-v1 and assigned datasheet-based sections, terminal order, and pin orientation.

Sections now used:

Power Supply: VBUS, PMID, BTST, SW, SYS, BAT, GND
Voltage Regulator: REGN, TS_BIAS
Control: ILIM, ~QON, PG, STAT, ~INT
Enable: ~CE
Analog: TS
Communication: SDA, SCL

Verified the updated symbol metadata after applying the changes.

Run ERC/DRC

Review control pins

Check power pin types

Add decoupling capacitors

Refine this doc

Ask about this doc

BQ25622RYKR Part Audit

Date: 2026-05-26

Scope

Reviewed available Flux part/project information for BQ25622RYKR and compared it against the official Texas Instruments datasheet.

Sources

Official datasheet: https://www.ti.com/lit/ds/symlink/bq25622.pdf
TI shared datasheet title: BQ25620/BQ25622 I2C Controlled 1-Cell, 3.5-A, Maximum 18-V Input, Buck Battery Charger with NVDC Power Path Management and OTG Output
Flux project: BQ25622RYKR

Available Part Information in Flux

Project / Library Metadata

Project name: BQ25622RYKR
Manufacturer: Texas Instruments
MPN: BQ25622RYKR
Description: Charger IC Lithium Ion/Polymer 18-WQFN-HR (3 x 2.5)
Terminal count in library/project: 18
Mounting: Surface mount
Package stated in project/library: WQFN / WQFN-HR, RYK, 18 pins, 2.5 mm x 3.0 mm / 3 x 2.5 mm
Datasheet property: updated to official TI URL: https://www.ti.com/lit/ds/symlink/bq25622.pdf

Noted Metadata Issue

The library result contains part-type-specific values logicFunction = AND and icType = Logic. These are not appropriate for a switching battery charger/power-management IC and should be corrected/removed if editable in the source library metadata.

Key Datasheet Specs

Device family: BQ25620 / BQ25622
Function: I2C-controlled 1-cell Li-ion/Li-polymer synchronous buck battery charger with NVDC power-path management and OTG boost output
Input operating voltage: 3.9 V to 18 V
Input absolute maximum: 26 V on VBUS when converter not switching
Maximum input current: 3.2 A recommended operating condition
Maximum fast-charge current: 3.5 A
Switching frequency: 1.5 MHz nominal, 1.35 MHz to 1.65 MHz range
Battery chemistry: single-cell Li-ion / Li-polymer
BAT/SYS absolute maximum: 6 V
Recommended external components: 0.68 uH to 2.2 uH inductor, VBUS cap >= 1 uF, PMID cap >= 10 uF, SYS cap 20 uF to 500 uF, BAT cap >= 10 uF
Ambient operating temperature: -40 C to +85 C
Junction operating temperature: -40 C to +125 C
Thermal resistance RthetaJA: 60.1 C/W for RYK QFN 18-pin package

Datasheet Pinout vs Flux Symbol

Table

Pin	Datasheet BQ25622 name	Datasheet function	Flux symbol terminal	Result
1	BTST	High-side switching MOSFET gate-driver supply	BTST	Match
2	REGN	Internal linear-regulator output	REGN	Match
3	PG	Open-drain active-low power-good indicator	PMID_GD	Mismatch: should be PG or /PG, not PMID_GD
4	ILIM	Input-current-limit setting input	ILIM/D-	Partial mismatch: BQ25622 uses ILIM; D- is BQ25620-related naming
5	TS_BIAS	Bias for TS resistor divider	TS_BIAS/D+	Partial mismatch: BQ25622 uses TS_BIAS; D+ is BQ25620-related naming
6	TS	Temperature qualification voltage input	TS	Match
7	QON	BATFET enable/system power reset input	~QON	Functionally acceptable if active-low notation is intended
8	BAT	Battery charging power connection	BAT	Match
9	SYS	Charger output voltage to system	SYS	Match
10	STAT	Open-drain charge status output	STAT	Match
11	INT	Open-drain interrupt output	~INT	Functionally acceptable if active-low notation is intended
12	SDA	I2C data	SDA	Match
13	SCL	I2C clock	SCL	Match
14	CE	Active-low charge enable input	~CE	Functionally acceptable/correct active-low notation
15	GND	Ground return	GND	Match
16	SW	Switching node to output inductor	SW	Match
17	PMID	HSFET drain connection	PMID	Match
18	VBUS	Charger input voltage	VBUS	Match

Symbol Property Check

All 18 terminals exist and pin numbers match the datasheet numbering.
Terminal names mostly match the datasheet, with three naming issues:
1. Pin 3 is incorrect: Flux has PMID_GD; datasheet has PG.
2. Pin 4 includes D-; BQ25622 datasheet pin name is ILIM.
3. Pin 5 includes D+; BQ25622 datasheet pin name is TS_BIAS.
Pin descriptions are not populated: every terminal shows Pin Type: Unspecified; no datasheet function text is present in terminal properties.
Suggested terminal type refinements:
- BTST: power / bootstrap supply
- REGN: power output
- PG, STAT, INT: open-drain outputs
- ILIM, TS, QON, CE, SCL: inputs
- SDA: bidirectional open-drain I2C data
- BAT, SYS, PMID, VBUS: power pins
- SW: switching/power pin
- GND: ground

Footprint / Package Check

Datasheet package: RYK, 18-pin WQFN, 2.5 mm x 3.0 mm.
Flux footprint pad count: 18 pads.
Pad designators track the same terminal names as the schematic symbol, so the pin-name mismatches also propagate into the footprint labels.
Footprint asset name: FP_IC_BQ25628RYKR; label: IC_BQ25628RYKR.kicad_mod.
This is a mismatch for a BQ25622RYKR part unless the BQ25628 RYK footprint is intentionally package-identical and has been verified against TI land pattern dimensions. The pad count and general package size appear compatible, but the asset naming should be corrected or replaced with a BQ25622RYKR/BQ25620-BQ25622 RYK footprint source to avoid traceability errors.

Summary of Mismatches / Action Items

Critical symbol mismatch: rename pin 3 from PMID_GD to PG or /PG.
Symbol cleanup: rename pin 4 from ILIM/D- to ILIM for BQ25622.
Symbol cleanup: rename pin 5 from TS_BIAS/D+ to TS_BIAS for BQ25622.
Add terminal pin descriptions and pin types from the datasheet; current terminal pin types are all unspecified.
Footprint traceability issue: footprint asset is named for BQ25628RYKR, not BQ25622RYKR. Verify package-land-pattern equivalence or replace/rename the footprint asset.
Metadata issue: remove/correct inappropriate logicFunction = AND and icType = Logic values in the library metadata.

Overall Assessment

The part has the correct manufacturer, MPN, description class, package family, and 18-terminal count. The major functional pin numbering is mostly correct, but the symbol appears to include mixed BQ25620/BQ25622/BQ25628-derived naming. The most important correction is pin 3: BQ25622 pin 3 is PG, not PMID_GD. Pins 4 and 5 should be BQ25622-specific names (ILIM, TS_BIAS) without D-/D+ aliases. The footprint has 18 pads but is sourced/named as BQ25628RYKR, so it should be verified or replaced for audit-grade traceability.

Scope

Sources

Available Part Information in Flux

Project / Library Metadata

Noted Metadata Issue

Key Datasheet Specs

Datasheet Pinout vs Flux Symbol

Symbol Property Check

Footprint / Package Check

Summary of Mismatches / Action Items

Overall Assessment

Reviews

Documents

BQ25622RYKR Part Audit

Assets

kicad_mod

IC_BQ25628RYKR.kicad_mod

FP_IC_BQ25628RYKRFootprint

image-removebg-preview.png

image-removebg-previewThumbnail

Project Name

BQ25622RYKR

Description

Charger IC Lithium Ion/Polymer 18-WQFN-HR (3x2.5)

The BQ25622RYKR 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 high-efficiency synchronous buck charger, system power-path control, input current management, and battery protection functions into a compact solution optimized for portable and embedded applications.

The device supports USB and external adapter power sources while providing programmable charging parameters through an I²C interface. Integrated power MOSFETs and advanced power management features reduce external component count and improve overall system efficiency. The charger incorporates dynamic power management, thermal regulation, battery temperature monitoring, and multiple safety protections to ensure reliable operation under varying load and environmental conditions.

The BQ25622 family is designed for compact battery-powered systems requiring efficient charging, intelligent power-path control, and low system power consumption.

Engineering Specification

Manufacturer: Texas Instruments

Device Type: Single-Cell Li-Ion/Li-Polymer Switching Battery Charger with Integrated Power-Path Management

Battery Chemistry Support: Lithium-Ion and Lithium-Polymer

Charging Topology: Synchronous Buck Switching Charger

Input Power Sources: USB Input and External DC Adapter Support

Charge Current Capability: Programmable Fast Charge Current Support

Communication Interface: I²C Serial Communication Interface

Integrated Power Devices: Internal High-Side and Low-Side MOSFETs

Charging Features:

Precharge Mode Fast Charge Mode Charge Termination Automatic Recharge Programmable Charge Parameters Safety Timer Control

Power Management Features:

Dynamic Power-Path Management Input Current Optimization Narrow Voltage DC Regulation Input Voltage Regulation System Voltage Regulation

Monitoring and Reporting Features:

Charge Status Monitoring Fault Status Reporting Battery Temperature Monitoring through NTC Interface Input Source Detection

Protection Features:

Input Overvoltage Protection Battery Overvoltage Protection Thermal Shutdown Protection Thermal Regulation Input Current Limiting Short-Circuit Protection Safety Timer Protection

Package Type: WQFN Package

Package Variant: RYK

Mounting Type: Surface Mount

Typical Applications:

Portable Consumer Electronics Embedded Battery-Powered Devices IoT Systems Handheld Industrial Equipment USB-Powered Systems Wearable Electronics Portable Medical Devices

#commonpartslibrary #integratedcircuit #powermanagement #batterycharger

Properties

Part Type

Integrated Circuit

Manufac…er Name

Texas Instruments

Manufac… Number

BQ25622RYKR

Datasheet URL

ti.com/lit/ds/symlink/bq25622.pdf

Designator Prefix

License

creativecommons.org/licenses/by/4.0/

Symbol Style

parametric-v1

Pricing & Availability

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adrian95 / BQ25622RYKR

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