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Texas Instruments BQ25622ERYKR
- Part No.:
- BQ25622ERYKR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Chargers
- Package:
- 18-PowerWFQFN
- Datasheet:
-
BQ25622ERYKR.pdf
- Description:
- BQ25622ERYKR
- Quantity:
- Payment:
- Shipping:
Inventory:1,524
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Product details
Overview
BQ25622ERYKR from Texas Instruments is a 3A, I²C-controlled, synchronous buck battery charger IC for single-cell Li-ion/Li-polymer batteries with NVDC power path management, ±0.5% charge voltage accuracy, 15 mΩ BATFET, and JEITA-compliant thermal regulation-designed for portable medical equipment requiring reliable charging under variable input conditions.
For engineers reviewing the BQ25622ERYKR datasheet, BQ25622ERYKR pinout, BQ25622ERYKR application, or BQ25622ERYKR equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in IP cameras and tablets, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The BQ25622ERYKR integrates a 1.5 MHz synchronous buck converter, narrow VDC (NVDC) power path, and autonomous charge sequencing (trickle → pre-charge → CC → CV), enabling system instant-on even with depleted batteries. It supports dual-mode operation: fully autonomous charging or host-controlled via I²C register interface.
Its power path architecture regulates SYS slightly above BAT voltage but enforces a programmable minimum system voltage (2.56–3.84 V), while integrated protections include thermal regulation at 120°C, battery overvoltage protection at 104% of VREG, and input current/voltage regulation with automatic VINDPM tracking to battery voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Current | Up to 3 A - enables full Li-ion cell recharge in under 2 hours under typical 5 V/2 A adapter conditions. |
| Input Voltage Range | 3.9 V to 18 V - supports USB PD, wall adapters, and industrial DC sources without external LDO or buck pre-regulator. |
| Charge Voltage Accuracy | ±0.5% - ensures precise 4.2 V or 4.35 V termination critical for battery longevity and safety compliance. |
| BATFET RDS(on) | 15 mΩ - minimizes discharge path loss, extending runtime during system operation on battery only. |
| Quiescent Battery Current | 1.5 µA in battery-only mode - preserves shelf life for devices in storage or low-power standby. |
| Ship Mode Leakage | 0.15 µA - meets stringent logistics and long-term storage requirements for consumer and medical devices. |
| I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz) compatible - allows integration with low-power microcontrollers without timing overhead. |
Pinout & Package
Package: 18-pin WQFN (RYK), 2.50 mm × 3.00 mm, 0.4 mm pitch, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBUS | Input Power Supply | Accepts 3.9–18 V input; internal reverse-blocking FET prevents battery backfeed into source. |
| BAT | Battery Connection | Direct connection to Li-ion anode; internal 15 mΩ BATFET controls charge/discharge path. |
| SYS | System Power Rail | Regulated output to system load; NVDC maintains voltage > battery voltage or ≥2.56 V minimum. |
| SW | Switching Node | Connects to external 0.68–2.2 µH inductor; drives internal high-side/low-side FETs in buck topology. |
| ILIM | Analog Input Current Set | Sets input current limit (0.1–3.2 A) via resistor divider; also supports real-time current monitoring. |
| TS / TS_BIAS | Thermal Sensing Interface | Supports NTC thermistor bias and voltage sensing for JEITA-compliant 5-zone temperature profiling. |
| QON | Digital Reset Control | Active-low signal exits ship mode (tSM_EXIT) or triggers full system reset (tQON_RST). |
| STAT / INT | Status & Interrupt Outputs | Open-drain signals report charge state (STAT) and faults/events (INT) to host MCU with 256 µs pulse width. |
Key Features
| Feature | Design Value |
|---|---|
| Narrow VDC Power Path | Maintains SYS ≥2.56 V regardless of battery state-enables instant-on boot with zero-battery or no-battery configurations. |
| Autonomous Charging Engine | Executes full 4-phase charge cycle (trickle/pre-CC/CV/termination) without host intervention or firmware overhead. |
| Integrated 12-bit ADC | Monitors VBAT, VBUS, IBAT, and TS voltage simultaneously-eliminates need for external sensing circuitry or calibration. |
| Flexible Input Regulation | VINDPM tracks battery voltage automatically; IINDPM limits input current to prevent source collapse under heavy system load. |
| Ultra-Low Ship Mode Current | 0.15 µA BAT leakage extends shelf life beyond 12 months-critical for sealed medical or retail devices. |
Applications
| Tablet Power Management | Gaming Peripheral Charging |
|---|---|
Use Scenario: 10-inch Android tablet with 5000 mAh Li-polymer battery, powered by 15 W USB-C adapter and supporting always-on display mode. IC Role / Device Role / Timing Role: Primary battery charger and system power arbiter-manages concurrent charging, system load, and battery supplement during peak GPU usage. Use Value: NVDC prevents brownouts during video playback; 1.5 MHz switching enables compact 1 µH inductor; ±0.5% VCHG ensures JEITA-compliant aging control. |
Use Scenario: Wireless gaming headset with fast-charge capability and multi-hour runtime, using 3.7 V/800 mAh cell and 5 V/1 A wall adapter. IC Role / Device Role / Timing Role: Single-chip charge + power-path controller-handles trickle-to-CV transition, thermal foldback during rapid charging, and seamless adapter/battery handoff. Use Value: 10 mA–620 mA programmable termination avoids overcharge; 1.5 µA quiescent current extends idle battery life; ILIM pin simplifies adapter current matching. |
| IP Camera Energy Control | Portable Medical Monitor |
Use Scenario: PoE-powered outdoor IP camera with backup Li-ion battery, operating in -20°C to 60°C ambient with motion-triggered recording. IC Role / Device Role / Timing Role: Temperature-aware charger with JEITA profile enforcement-suspends charging outside safe zones and resumes only after thermal recovery. Use Value: TS/TS_BIAS pins support 10 kΩ NTC for accurate cold/warm/hot zone detection; 120°C thermal regulation prevents overheating during summer operation. |
Use Scenario: FDA-cleared handheld ECG monitor with 24-hour battery life, requiring IEC 62368-1 certification and guaranteed uptime during clinical use. IC Role / Device Role / Timing Role: Safety-certified power manager-provides redundant OVP/OCP, charging safety timer, and fault reporting via STAT/INT pins for diagnostic logging. Use Value: IEC 62368-1 CB certification validates safety compliance; 0.1 µA shutdown current meets low-power emergency mode requirements; BATFET control enables full system reset on fault. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-cell buck charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ25620RYKT | Includes D+/D− USB detection and OTG mode (2.4 A); lacks ILIM pin; same package and VIN/ICHG specs. | Required for USB host enumeration or peripheral power delivery; unsuitable where ILIM-based input current tuning is mandatory. | Select BQ25620RYKT only if D+/D− handshake or bidirectional OTG is needed; otherwise BQ25622ERYKR offers superior input regulation control. |
| BQ25618EYFFR | Lower 2 A max charge current; identical NVDC, JEITA, and I²C interface; 16-pin WQFN (2.0 × 2.0 mm), smaller footprint. | Targeted at space-constrained wearables or sensors where 3 A is unnecessary; not drop-in due to pin count and layout change. | Choose BQ25618EYFFR for compact designs with ≤2 A charging needs; BQ25622ERYKR remains optimal for higher-power portable medical or industrial devices. |
Compared with BQ25620RYKT and BQ25618EYFFR, the BQ25622ERYKR uniquely combines 3 A charging, ILIM-based adaptive input current limiting, and certified safety compliance-making it the preferred choice for applications demanding robust power path control without USB detection or footprint reduction.
Availability
BQ25622ERYKR is available at Aetrix Electronics and suitable for tablet power management, portable medical monitors, IP camera energy control, and gaming peripheral charging requiring stable component supply across production lifecycles.
Supply support for BQ25622ERYKR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in battery management and power conversion ICs.
The BQ25622ERYKR belongs to TI's BQ256xx family of highly integrated switch-mode battery chargers-designed specifically for space-constrained, high-efficiency portable electronics needing autonomous charging, NVDC power path, and comprehensive safety certification.
FAQ
What is the maximum input voltage supported by the BQ25622ERYKR?
The BQ25622ERYKR supports an absolute maximum input voltage of 26 V on VBUS, with recommended operation from 3.9 V to 18 V. This wide range accommodates USB PD, 12 V industrial rails, and legacy wall adapters. Operation above 18 V is limited to transient surges only and must remain within the 26 V absolute rating to avoid permanent damage.
Does the BQ25622ERYKR support JEITA-compliant charging profiles?
Yes, the BQ25622ERYKR implements full JEITA-compliant 5-zone thermal charging control via its TS and TS_BIAS pins. Using a standard 10 kΩ NTC thermistor, it suspends charging in cold (<0°C) and hot (>45°C) zones while applying reduced current in pre-warm and warm zones-ensuring safe, standards-aligned Li-ion operation per IEC 62133.
How does the NVDC power path in the BQ25622ERYKR improve system reliability?
The NVDC architecture in the BQ25622ERYKR maintains SYS voltage at least 50 mV above BAT (or ≥2.56 V minimum), enabling instant system startup even with a fully depleted or absent battery. During high system load, it seamlessly supplements power from the battery without interrupting operation-preventing brownouts and eliminating the need for large bulk capacitors on the SYS rail.
Can the BQ25622ERYKR operate without an I²C host controller?
Yes, the BQ25622ERYKR operates autonomously without I²C communication. It performs full charge sequencing-including trickle, pre-charge, constant-current, and constant-voltage phases-and terminates based on voltage and current thresholds. I²C is optional for advanced configuration, real-time monitoring, or dynamic parameter updates.
What is the purpose of the ILIM pin on the BQ25622ERYKR?
The ILIM pin on the BQ25622ERYKR sets the input current limit (0.1–3.2 A) via an external resistor to ground, enabling adapter current matching without firmware. It also provides analog feedback proportional to actual input current-allowing host MCUs to monitor source loading in real time and adjust system power budget accordingly.
BQ25622ERYKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 18-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current, Timer, Voltage
- Fault Protection:
- Over Current, Over Temperature, Over Voltage, Short Circuit
- Charge Current - Max:
- 3A
- Battery Pack Voltage:
- 4.8V (Max)
- Voltage - Supply (Max):
- 18V
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-WQFN-HR (3x2.5)
BQ25622ERYKR FAQ
1.How can I place an order for BQ25622ERYKR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ25622ERYKR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BQ25622ERYKR reliable?
The price and inventory of BQ25622ERYKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ25622ERYKR is usually 5 days.
3.What payment methods are accepted for BQ25622ERYKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ25622ERYKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ25622ERYKR?
BQ25622ERYKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ25622ERYKR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BQ25622ERYKR?
For technical support, including BQ25622ERYKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ25622ERYKR requirements.
6.How does Aetrix verify that BQ25622ERYKR is sourced from the original manufacturer or authorized distributors?
All BQ25622ERYKR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BQ25622ERYKR meets industry standards.
7.What is the process for return or replacement of BQ25622ERYKR?
All BQ25622ERYKR units undergo pre-shipment inspection (PSI). If there is an issue with BQ25622ERYKR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BQ25622ERYKR part is unused and in its original packaging.
Return procedure for BQ25622ERYKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ25622ERYKR Tags
-
BQ21040DBVR
Texas Instruments
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MCP73812T-420I/OT
Microchip Technology
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MCP73831T-2ACI/OT
Microchip Technology
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MCP73832T-2ACI/OT
Microchip Technology
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MCP73831T-2DCI/OT
Microchip Technology
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MCP73832T-2DCI/OT
Microchip Technology
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MCP73831T-2ATI/OT
Microchip Technology
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MCP73832T-2ATI/OT
Microchip Technology
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MCP73831T-5ACI/OT
Microchip Technology
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MCP73832T-2ACI/MC
Microchip Technology
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MCP73831T-2ACI/MC
Microchip Technology
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MCP73831T-2ATI/MC
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