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Texas Instruments BQ24261RGET
- Part No.:
- BQ24261RGET
- Manufacturer:
- Texas Instruments
- Category:
- Battery Chargers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
BQ24261RGET.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,155
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Product details
Overview
BQ24261RGET from Texas Instruments is a host-controlled, single-input, single-cell Li-ion battery charger IC with integrated power-path management and USB-OTG boost capability. It delivers up to 3 A charge current at 5% accuracy, supports 30-V input rating with overvoltage protection, and features Charge Time Optimizer (CTO) for accelerated CC/CV transition-enabling faster charging of 4000-mAh batteries in portable media players.
For engineers reviewing the BQ24261RGET datasheet, BQ24261RGET pinout, BQ24261RGET application, or BQ24261RGET equivalent, this page provides verified technical context on its I²C-programmable charge voltage (3.5–4.44 V), thermal regulation at 125°C, JEITA-compatible NTC monitoring via TS pin, and 24-pin QFN (RGE) package with 4 mm × 4 mm footprint.
Technical Context
The BQ24261RGET implements a synchronous buck switching regulator with integrated 17-mΩ power-path MOSFET, enabling system power delivery from IN while simultaneously charging the battery. Its power-path architecture allows seamless transition between adapter and battery supply, including supplement mode when SYS load exceeds input current limit.
Charge control is fully programmable via I²C: voltage (3.5–4.44 V), current (500–3000 mA), termination threshold (50–200 mA), VIN_DPM threshold (4.2–11.6 V), and JEITA temperature thresholds via TS pin. The device enters high-impedance mode when CD is driven high, reducing quiescent current to 80 µA in RGE package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2 V to 13.2 V - supports USB 2.0/3.0 and 12-V USB PD inputs without external LDO or OVP circuitry. |
| Max Charge Current | 3 A - enables full charge of 4000-mAh battery in under 2 hours with CTO acceleration. |
| Battery Voltage Range | 3.5 V to 4.44 V - programmable via I²C to match Li-ion, Li-polymer, or custom cell chemistries. |
| Thermal Regulation Threshold | 125°C - dynamically reduces input current to prevent die overheating during high-power operation. |
| TS Pin JEITA Support | 4-threshold NTC monitoring - enables compliant charging across cold, cool, warm, and hot battery temperature zones. |
| I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz) - allows real-time charge parameter adjustment and fault status readback. |
| Package | 24-pin VQFN (RGE), 4 mm × 4 mm - exposes thermal pad for PCB-level heat dissipation; RθJA = 32.6°C/W. |
Pinout & Package
Package: 24-pin VQFN (RGE), 4.00 mm × 4.00 mm, exposed thermal pad connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | DC Input Supply | Accepts 4.2–13.2 V adapter or USB source; bypassed with ≥4.7 µF ceramic capacitor to PGND. |
| BAT | Battery Connection | Direct connection to Li-ion anode; requires ≥1 µF local ceramic decoupling for stability. |
| SYS | System Power Rail Sense | Monitors system voltage for power-path regulation; must have ≥20 µF total bulk capacitance. |
| TS | JEITA NTC Monitor Input | Four-threshold thermistor interface; pulled high to DRV to disable if unused. |
| SDA/SCL | I²C Data/Clock | Configurable charge parameters and status reporting; require 10-kΩ pull-up resistors. |
| INT/STAT | Open-Drain Status Outputs | Signal charging status and faults (e.g., 128-µs pulse on thermal or OVP event). |
| PGND | Power Ground | Primary ground return for high-current paths; must connect to thermal pad and PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Charge Time Optimizer (CTO) | Accelerates CC-to-CV transition by dynamically adjusting charge current profile-reducing total charge time for 4000-mAh cells by up to 25% vs. traditional chargers. |
| Integrated Power-Path FET | 17-mΩ RDS(on) MOSFET enables simultaneous system powering and battery charging without external components. |
| USB OTG Boost Mode | Configurable 5-V/1-A output from battery-supports USB On-The-Go host functionality without secondary boost IC. |
| Programmable Input DPM | VIN_DPM threshold adjustable from 4.2 V to 11.6 V via I²C-prevents adapter collapse under heavy SYS load. |
| Thermal & Safety Protection | Includes 125°C thermal regulation, 150°C shutdown, battery OVP (1.05×VBATREG), and 30-V input OVP. |
Applications
| Smartphones | Power Banks |
|---|---|
|
Use Scenario: Compact smartphone design requiring fast charging, system runtime extension, and USB OTG support. IC Role / Device Role / Timing Role: Single-chip battery charger and power-path manager handling IN-to-SYS delivery, BAT charging, and 5-V OTG boost. Use Value: Eliminates need for discrete power-path FET and boost converter-reducing BOM count and PCB area by >30%. |
Use Scenario: Portable external battery pack with dual-role USB-C port (charging input + device power output). IC Role / Device Role / Timing Role: Manages bidirectional power flow: charges internal cells from USB input and supplies 5 V/1 A to connected devices. Use Value: Enables true dual-role operation using one IC-no separate charger and boost controller required. |
| Tablets | Handheld Medical Devices |
|
Use Scenario: Mid-size tablet with 4000–6000 mAh battery needing <2-hour full charge and uninterrupted system operation. IC Role / Device Role / Timing Role: Host-controlled charger with CTO acceleration and seamless power-path handoff during AC adapter plug/unplug events. Use Value: Maintains stable SYS rail during adapter transitions-preventing system reset or brownout during charging. |
Use Scenario: Battery-powered handheld diagnostic tool requiring safe, temperature-aware charging in clinical environments. IC Role / Device Role / Timing Role: JEITA-compliant charger with four-zone NTC monitoring (via TS pin) and precise 0.75% VBAT regulation accuracy. Use Value: Ensures battery stays within medical-grade thermal safety limits-meeting IEC 62366 usability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-cell Li-ion charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24262RGET | Higher default input current limit (6.5 A vs. 14 A disabled), 4.2-V OVP, no D+/D− detection. | Targeted at fixed-input systems (e.g., wall adapters only); lacks USB enumeration capability. | Select BQ24262RGET when USB D+/D− detection is unnecessary and higher discharge current (6 A) is required. |
| BQ25601DRGER | Newer generation with 3.5-A max charge, 18-V input, integrated ADC, and enhanced safety timers. | Designed for industrial and long-lifecycle applications; supports wider VIN range and more precise telemetry. | Choose BQ25601DRGER for new designs requiring extended input voltage, production longevity, or battery health monitoring. |
Compared with BQ24261RGET, BQ24262RGET removes USB detection but increases discharge capability, while BQ25601DRGER offers broader input range and telemetry at cost of legacy pin compatibility-making BQ24261RGET optimal for space-constrained USB-aware consumer designs.
Availability
BQ24261RGET is available at Aetrix Electronics and suitable for smartphones, power banks, and handheld medical devices requiring stable component supply and proven USB-aware charging architecture.
Supply support for BQ24261RGET 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for portable electronics.
The bq2426x family was designed for compact, high-efficiency Li-ion charging in USB-connected consumer devices-emphasizing integration, thermal robustness, and host-controlled flexibility.
FAQ
What is the maximum input voltage supported by the BQ24261RGET?
The BQ24261RGET supports an absolute maximum input voltage of 30 V, with recommended operating range up to 13.2 V for bq24261 variants. Its integrated 30-V OVP protection prevents damage from transient surges or incorrect adapter use-critical in multi-voltage USB PD environments where input may reach 9 V or 12 V.
Does the BQ24261RGET support USB Battery Charging (BC) 1.2 detection?
No, the BQ24261RGET does not implement full USB BC 1.2 detection. It uses simplified D+/D− short detection to select 1.5-A input current limit mode upon initial connection, but lacks dedicated BC 1.2 enumeration logic or data-line handshake. This makes it suitable for basic USB-aware systems but not for strict BC 1.2 compliance testing.
Can the BQ24261RGET operate without an external inductor?
No, the BQ24261RGET requires an external 1.5–2.2 µH inductor connected between SW and PGND to complete its synchronous buck switching stage. The inductor is essential for energy transfer during charging and cannot be omitted-operation without it will result in failure to regulate or deliver charge current.
What is the purpose of the BGATE pin on the BQ24261RGET?
The BGATE pin on the BQ24261RGET drives an external P-channel MOSFET to provide low-resistance battery discharge path during supplement mode or system load peaks. When enabled, it allows BAT to supply current directly to SYS-bypassing the internal 17-mΩ FET-and supports up to 6 A discharge in conjunction with external FET selection.
Is the BQ24261RGET still recommended for new designs?
No, Texas Instruments explicitly marks the BQ24261RGET as "Not Recommended for New Designs" in its official documentation. While fully functional and supported, TI recommends newer alternatives like BQ25601DRGER for improved efficiency, extended input range, and enhanced safety features-especially for products entering development after 2016.
BQ24261RGET Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current
- Fault Protection:
- Over Temperature, Over Voltage
- Charge Current - Max:
- 3A
- Battery Pack Voltage:
- 3.5V
- Voltage - Supply (Max):
- 13.2V
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
BQ24261RGET FAQ
1.How can I place an order for BQ24261RGET through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ24261RGET 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 BQ24261RGET reliable?
The price and inventory of BQ24261RGET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ24261RGET is usually 5 days.
3.What payment methods are accepted for BQ24261RGET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ24261RGET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ24261RGET?
BQ24261RGET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ24261RGET 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 BQ24261RGET?
For technical support, including BQ24261RGET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ24261RGET requirements.
6.How does Aetrix verify that BQ24261RGET is sourced from the original manufacturer or authorized distributors?
All BQ24261RGET 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 BQ24261RGET meets industry standards.
7.What is the process for return or replacement of BQ24261RGET?
All BQ24261RGET units undergo pre-shipment inspection (PSI). If there is an issue with BQ24261RGET, 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 BQ24261RGET part is unused and in its original packaging.
Return procedure for BQ24261RGET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ24261RGET 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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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
Microchip Technology
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