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Texas Instruments BQ25883RGER
- Part No.:
- BQ25883RGER
- Manufacturer:
- Texas Instruments
- Category:
- Battery Chargers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
BQ25883RGER.pdf
- Description:
- IC BATT CHG LI-ION 2CELL 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,407
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Product details
Overview
BQ25883RGER from Texas Instruments is a 2-cell (2s) Li-ion battery charger IC with integrated power path management, USB On-The-Go (OTG) buck converter, and I²C control. It delivers 2-A boost-mode charging, supports 3.9–6.2 V USB input, regulates charge voltage to ±0.5% accuracy, and enables instant-on system operation with deeply discharged or absent batteries - used in portable POS terminals and wireless security cameras.
For engineers reviewing the BQ25883RGER datasheet, BQ25883RGER pinout, BQ25883RGER application, or BQ25883RGER equivalent, key selection criteria include its 1.5 MHz switching frequency, dual-mode operation (charge + OTG), integrated 16-bit ADC for bus/battery monitoring, NVDC power path architecture, and support for USB BC1.2 D+/D− detection.
Technical Context
The BQ25883RGER implements a synchronous boost converter for 2s battery charging and a separate synchronous buck converter for USB OTG output (4.5–5.5 V, up to 2 A). Its power path uses a 17 mΩ BATFET and narrow VDC (NVDC) architecture to maintain regulated SYS voltage independent of battery state.
Control is fully I²C-based with register-mapped configuration of charge/OTG parameters, input current optimization (ICO), JEITA-compliant thermistor monitoring via TS pin, and real-time ADC measurements of VBUS, IBUS, VBAT, IBAT, VSYS, die temperature, and NTC voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Current | 2 A max; enables full-rate charging of 2s Li-ion packs (e.g., 7.4 V nominal) within thermal limits. |
| Input Voltage Range | 3.9 V to 6.2 V; compatible with USB 2.0/3.0 hosts, wall adapters, and legacy USB PD sources. |
| OTG Output | 4.5–5.5 V at up to 2 A; powers USB peripherals directly from battery without external DC-DC stage. |
| Charge Voltage Accuracy | ±0.5% at 8.4 V; ensures precise cell balancing and longevity for 2s Li-ion (e.g., 4.2 V/cell). |
| Switching Frequency | 1.5 MHz typical; allows use of compact 1 µH inductors and reduces EMI filtering burden. |
| ADC Resolution | 16-bit effective; provides high-fidelity monitoring of bus current, battery voltage, and die temperature for closed-loop safety. |
| Thermal Regulation | 120°C junction regulation; dynamically throttles charge current to prevent overheating during sustained high-power operation. |
Pinout & Package
VQFN-24 package (4.0 mm × 4.0 mm, 0.5 mm pitch) with wettable flanks; thermally enhanced bottom-exposed pad for PCB heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D+, D− | USB data interface | Auto-detects USB host type (SDP/CDP/DCP) per BC1.2; enables plug-and-play adapter compatibility. |
| STAT, /PG, /INT | Open-drain status outputs | STAT indicates charge status; /PG signals valid input source; /INT pulses on fault or register event for host interrupt handling. |
| ILIM | Analog input | Sets input current limit (500–3300 mA) via resistor divider; enables adapter power tracking without overloading. |
| TS | Analog input | Connects to NTC thermistor; enables JEITA-compliant charge/OTG thermal profiling across –10°C to 65°C. |
| SW, BTST, REGN | Power switch node & gate drive | SW connects to external inductor; BTST supplies high-side driver; REGN powers internal logic and gate drivers (4.8 V LDO). |
| BAT, SYS, PMID, VBUS | Power domain connections | BAT: 2s battery terminal; SYS: regulated system rail; PMID: input blocking FET node; VBUS: USB input supply. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Path | NVDC architecture maintains stable SYS voltage even with dead or missing battery - critical for instant-on embedded systems. |
| USB OTG Buck Converter | Delivers regulated 5 V @ 2 A from battery to USB port; eliminates need for discrete buck IC in portable host designs. |
| I²C Programmability | Full register control of charge voltage/current, OTG output, input limits, JEITA thresholds, and fault responses - enables firmware-defined power policy. |
| Input Current Optimizer (ICO) | Maximizes power extraction from weak adapters by dynamically adjusting VINDPM to avoid collapse - improves runtime on marginal sources. |
| 16-bit System Monitor ADC | Measures VBUS, IBUS, VBAT, IBAT, VSYS, TS, and die temperature with <1 mV/1 mA resolution - enables accurate fuel gauging and thermal margining. |
Applications
| Bluetooth Speaker | EPOS Printer |
|---|---|
Use Scenario: Portable speaker with USB-C input and battery-powered playback requiring seamless transition between AC and battery modes. IC Role / Device Role / Timing Role: BQ25883RGER manages 2s Li-ion charging, powers audio subsystem via SYS rail, and enables USB OTG to act as host for firmware updates. Use Value: Instant-on operation with no boot delay, ±0.5% charge voltage precision extends battery cycle life, and integrated ADC enables real-time battery health reporting. | Use Scenario: Battery-operated electronic point-of-sale printer that accepts USB power for charging while printing receipts. IC Role / Device Role / Timing Role: BQ25883RGER regulates SYS rail for thermal print head and controller, charges 2s pack during idle, and supports USB OTG for peripheral attachment (e.g., barcode scanner). Use Value: Narrow VDC power path prevents brownouts during high-current print pulses; ICO ensures reliable charging from low-power USB ports. |
| Portable POS Terminal | Wireless Security Camera |
Use Scenario: Handheld payment terminal with touchscreen UI, cellular modem, and long battery runtime. IC Role / Device Role / Timing Role: BQ25883RGER supplies stable SYS voltage to SoC and peripherals, charges 2s battery at 2 A, and monitors battery health via integrated ADC. Use Value: 93.4% charge efficiency at 1 A minimizes thermal load; 1.5 MHz switching enables small form factor; I²C registers allow dynamic charge rate adjustment based on modem activity. | Use Scenario: Solar- or USB-charged outdoor camera with motion-triggered recording and night vision LEDs. IC Role / Device Role / Timing Role: BQ25883RGER manages 2s Li-ion charging from intermittent USB/solar input, powers IR LEDs and image sensor via SYS, and enables OTG for local USB storage backup. Use Value: Input voltage regulation (3.9–5.5 V) accommodates variable solar panel output; JEITA thermistor support prevents charging in freezing conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ25882RGER | Same 2s, 2-A boost charger; lacks integrated 16-bit ADC and has WCSP-25 package (2.1×2.1 mm). | No on-chip bus/battery monitoring; requires external ADC or MCU analog inputs for telemetry. | Select when board space is constrained and system-level monitoring is handled externally. |
| BQ25887RGER | Same VQFN-24 package; adds cell balancing but removes OTG functionality and power path. | Supports balanced 2s charging but cannot power USB peripherals or maintain SYS rail during charge. | Select only if cell balancing is mandatory and OTG/system power path are not required. |
Compared with BQ25882RGER, BQ25883RGER adds integrated telemetry and OTG capability at the cost of larger footprint; compared with BQ25887RGER, it trades cell balancing for full power-path and host-mode flexibility - making BQ25883RGER optimal for portable devices needing both charging and USB host capability.
Availability
BQ25883RGER is available at Aetrix Electronics and suitable for portable POS terminals, wireless security cameras, Bluetooth speakers, and EPOS printers requiring stable component supply, long-term lifecycle support, and production-ready qualification.
Supply support for BQ25883RGER 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, embedded processing, and power management solutions for industrial, automotive, and consumer applications.
The BQ25883RGER belongs to TI's highly integrated battery charge management product line, designed specifically for space-constrained portable electronics requiring dual-role power management (charge + OTG) with minimal external components.
FAQ
What is the maximum supported battery configuration for the BQ25883RGER?
The BQ25883RGER is explicitly designed for 2-cell (2s) Li-ion or Li-polymer battery packs, supporting total battery voltages up to 9.2 V. It does not support 1s, 3s, or higher configurations - attempting to use outside the 2s range may result in incorrect charge termination, overvoltage, or thermal faults. The device's charge voltage regulation range (6.8–9.2 V) and JEITA thresholds are calibrated for 2s chemistry.
Does the BQ25883RGER support USB BC1.2 detection without external components?
Yes, the BQ25883RGER integrates full USB Battery Charging Specification 1.2 (BC1.2) detection on D+ and D− pins, including data contact detection (DCD) and secondary detection for SDP, CDP, and DCP identification. No external comparators, resistors, or switches are needed - the internal circuitry handles all voltage threshold comparisons and current sourcing/sinking per BC1.2 requirements.
Can the BQ25883RGER operate in OTG mode while the battery is charging?
No, the BQ25883RGER does not support simultaneous charging and OTG operation. When OTG mode is enabled (via I²C register), charging is automatically disabled and the internal power path reconfigures to supply VBUS from the battery. This hardware-enforced mutual exclusion prevents backfeed, thermal overload, and control conflicts - ensuring safe operation per USB specifications.
What is the purpose of the ILIM pin on the BQ25883RGER?
The ILIM pin on the BQ25883RGER sets the input current limit (IINDPM) from 500 mA to 3.3 A using an external resistor to ground. It functions as both a programming interface (via voltage divider) and a real-time monitor - the IC regulates the pin at 0.8 V and calculates actual input current as IIN = KILIM × VILIM / (RILIM × 0.8 V). This enables adapter-aware power management without MCU intervention.
How does the BQ25883RGER handle thermal regulation during high-current operation?
The BQ25883RGER implements junction-temperature-based thermal regulation at 120°C, dynamically reducing charge current to maintain safe operating temperature. Unlike simple shutdown, this feature sustains partial operation - allowing continued charging at derated current while preventing thermal runaway. The regulation is complemented by die temperature ADC readings (0.5°C LSB) and configurable thermal fault thresholds via I²C registers.
BQ25883RGER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 2
- Current - Charging:
- Constant
- Programmable Features:
- Current
- Fault Protection:
- Over Current, Over Temperature, Over Voltage, Short Circuit
- Charge Current - Max:
- 2.2A
- Battery Pack Voltage:
- 9.2V (Max)
- Voltage - Supply (Max):
- 6.2V
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
BQ25883RGER FAQ
1.How can I place an order for BQ25883RGER through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ25883RGER 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 BQ25883RGER reliable?
The price and inventory of BQ25883RGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ25883RGER is usually 5 days.
3.What payment methods are accepted for BQ25883RGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ25883RGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ25883RGER?
BQ25883RGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ25883RGER 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 BQ25883RGER?
For technical support, including BQ25883RGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ25883RGER requirements.
6.How does Aetrix verify that BQ25883RGER is sourced from the original manufacturer or authorized distributors?
All BQ25883RGER 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 BQ25883RGER meets industry standards.
7.What is the process for return or replacement of BQ25883RGER?
All BQ25883RGER units undergo pre-shipment inspection (PSI). If there is an issue with BQ25883RGER, 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 BQ25883RGER part is unused and in its original packaging.
Return procedure for BQ25883RGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ25883RGER Tags
-
BQ21040DBVR
Texas Instruments
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MCP73832T-2ACI/MC
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