BQ25622RYKR WQFN-HR-18 (RYK) Texas Instruments
Device Overview
The BQ25622RYKR is a Texas Instruments I²C-controlled buck charger for a single lithium-ion cell, using NVDC power-path management and an OTG output. The RYK 18-pin package and exact ordering suffix distinguish this procurement item from nearby BQ25620 and alternative carrier versions.
Confirmed Technical and Ordering Data
| Parameter | Confirmed value | Scope / condition |
|---|---|---|
| Device Function | I²C-controlled single-cell synchronous buck battery charger with power-path management and OTG output | Exact BQ25622: single-cell I2C buck charger with up to 3.5 A charging and OTG functionality in the RYK 18-pin orderable. |
| Vbus Operating | 3.9 to 18 V | recommended; VBUS input; do not substitute absolute maximum |
| Vbus Abs Max | 26 V | absolute maximum; VBUS when converter not switching; not normal operation |
| Charge Current Max | 3.5 A | recommended max; IBAT fast charging current |
| Input Current Max | 3.2 A | recommended max; IVBUS input current distinct from charge current |
| Ambient Temperature | -40 to 85 °C | recommended TA; Not junction rating |
| Junction Temperature | -40 to 125 °C | recommended TJ; Not ambient |
| External Inductor | 0.68 to 2.2 µH | recommended LSW; Inductor for switching regulator |
Engineering Selection Guidance
The charger accepts 3.9 to 18 V at VBUS during recommended operation and supports a fast-charge-current limit of 3.5 A. These are different constraints: the 3.2-A VBUS input-current figure is not the same as the battery charge-current rating. The 26-V VBUS absolute-maximum figure applies when the converter is not switching and must not be presented as a normal 26-V operating input.
The temperature line needs similar care. The recommended free-air ambient limit is −40 to +85 °C; the −40 to +125 °C figure belongs to device junction temperature, not ambient conditions. System qualification must consider board heating and the actual junction-to-ambient path rather than quoting the more generous number without its label.
TI gives 0.68–2.2 µH as the recommended switching inductor range. Power-path selection also depends on how the system load and the single-cell charging profile interact, so the battery-current and input-current limits should be checked independently against the selected adapter, layout, and operating case.
Procurement and RFQ
For sourcing, specify BQ25622RYKR exactly, including its RYK package. Request quotation with target quantity and any approved substitutions separately; stock, lead time, and minimum order quantity are confirmed only in a supplier response.
Lifecycle status does not indicate HKEQGOO stock, lead time, MOQ, or final availability.
Similar Parts
These are similar products for engineering evaluation, not confirmed replacements. Check electrical ratings, pinout, package, qualification and lifecycle before substitution.
BQ25622ERYKR
