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Texas Instruments BQ25890HRTWT
- Part No.:
- BQ25890HRTWT
- Manufacturer:
- Texas Instruments
- Category:
- Battery Chargers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
BQ25890HRTWT.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 24WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:489
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Product details
Overview
BQ25890HRTWT from Texas Instruments is an I²C-controlled 5-A single-cell Li-ion/Li-polymer switch-mode battery charger with integrated power path management, MaxCharge™ handshake support, and adjustable 4.5–5.5 V USB OTG boost. It delivers 93% charge efficiency at 2 A, supports 3.9–14 V input, and enables instant-on operation with deeply discharged or absent batteries.
For engineers reviewing the BQ25890HRTWT datasheet, BQ25890HRTWT pinout, BQ25890HRTWT application, or BQ25890HRTWT equivalent, key selection considerations include input voltage/current regulation accuracy (±3% / ±5%), ±0.5% charge voltage regulation, NVDC power path behavior, thermal regulation at 120°C, and WQFN-24 package compatibility with 4.0 × 4.0 mm footprint.
Technical Context
The BQ25890HRTWT implements a synchronous buck converter with integrated RBFET, HSFET, LSFET, and BATFET - enabling high-efficiency charging (93% @ 2 A) and low-impedance discharge (11 mΩ BATFET). Its power path architecture supports Narrow VDC (NVDC) operation, maintaining SYS ≥ 3.5 V even with zero or deeply depleted battery voltage.
It integrates Input Current Optimizer (ICO) for maximum power point tracking across adapters, Resistance Compensation (IRCOMP) for accurate cell-terminal voltage regulation, and dual-mode USB detection (BC1.2 + MaxCharge™) via D+/D– pins. The device operates in autonomous or I²C-configurable modes, with register-mapped control of charge voltage (3.84–4.608 V), current (0–5056 mA), and input limits (100–3250 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Current | Up to 5 A - enables fast charging of single-cell Li-ion packs in smartphones and tablets. |
| Input Voltage Range | 3.9 V to 14 V - supports USB 2.0/3.0, DCP, CDP, SDP, and high-voltage adapters without external circuitry. |
| OTG Boost Output | Adjustable 4.5–5.5 V at up to 2.4 A - powers USB peripherals directly from battery with hiccup-mode overcurrent protection. |
| Charge Voltage Accuracy | ±0.5% - ensures precise termination at 4.2 V or 4.35 V, critical for battery longevity and safety compliance. |
| Input Current Regulation | 100–3250 mA in 50-mA steps - allows fine-grained adapter load matching and avoids brownouts during system peak loads. |
| Thermal Regulation | 120°C threshold - dynamically reduces charge current to prevent junction overheating under sustained high-power operation. |
| BATFET RDS(on) | 11 mΩ typical - minimizes conduction loss during battery discharge, supporting up to 9 A peak current. |
Pinout & Package
Package: WQFN-24 (RTW), 4.0 mm × 4.0 mm × 0.75 mm, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBUS | Input power rail | Accepts 3.9–14 V input; connects internally to reverse-blocking FET (RBFET) source. |
| D+, D− | USB data interface | Enable BC1.2/MaxCharge™ adapter detection and OTG D+/D− control via DAC-configurable voltage sources. |
| STAT, INT | Status and interrupt outputs | Open-drain signals reporting charge status (STAT) and faults (INT) to host MCU with 256-µs pulse timing. |
| SCL, SDA | I²C interface | Support full register access for dynamic configuration of charge parameters, input limits, and safety thresholds. |
| OTG | Boost enable input | Active-high signal that initiates 4.5–5.5 V boost mode when OTG_CONFIG = 1 in register map. |
| QON | BATFET control | Enables ship-mode exit (1-sec low pulse) or full system reset (15-sec low pulse) without external logic. |
| TS | Thermistor input | Analog input for NTC thermistor; enables JEITA-compliant temperature qualification before/during charge and boost. |
| BAT, SYS, SW, BTST, REGN | Power path nodes | Direct connection points for battery, system rail, switching node, bootstrap supply, and LDO output - require tight layout per TI layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| NVDC Power Path | Maintains SYS ≥ 3.5 V regardless of battery state - enables instant-on boot with no or dead battery. |
| Input Current Optimizer (ICO) | Automatically detects maximum power point of input source without overloading - eliminates need for manual adapter characterization. |
| Resistance Compensation (IRCOMP) | Compensates for PCB trace resistance between charger output and battery terminal - improves charge voltage accuracy at cell level. |
| Integrated ADC | 7-bit monitoring of VBUS, BAT, SYS, TS, and charge current - enables real-time system telemetry without external sensors. |
| MaxCharge™ Handshake | Uses D+/D− pins to negotiate higher input voltage (9 V/12 V) with compatible adapters - enables faster charging than standard USB PD. |
Applications
| Smartphone Fast Charging | Tablet Power Management |
|---|---|
Use Scenario: High-speed charging from 0% to 80% in under 30 minutes using 9 V/2 A adapter with MaxCharge™ handshake. IC Role / Device Role / Timing Role: Primary battery charger and system power arbiter - manages simultaneous charge, system load, and OTG output. Use Value: Enables 5-A charging with <1% voltage error and thermal foldback at 120°C, extending cycle life while sustaining peak performance. | Use Scenario: Dual-role operation: charging from USB-C adapter while powering display and SoC, then supplying 5 V/2 A to USB peripherals via OTG. IC Role / Device Role / Timing Role: Integrated power path manager - regulates SYS rail above battery voltage while isolating battery during boost. Use Value: Delivers 93% boost efficiency at 1 A and supports down-to-2.5 V battery input, ensuring peripheral functionality even during deep discharge. |
| Portable Internet Device | Industrial Handheld Terminal |
Use Scenario: Field-deployed hotspot running on Li-polymer battery, requiring reliable charge from automotive USB port (5 V/1.5 A) and stable 3.5 V SYS rail. IC Role / Device Role / Timing Role: Adaptive input manager - auto-detects USB SDP/CDP/DCP and applies appropriate current limit without host intervention. Use Value: Achieves ±7.5% input current regulation and 12-µA ship-mode leakage, enabling multi-month shelf life and robust field operation. | Use Scenario: Ruggedized barcode scanner with cold-temperature operation requirement (-20°C), needing JEITA-compliant charge suspension below 0°C. IC Role / Device Role / Timing Role: Temperature-aware charger - uses TS pin with NTC to halt charging outside 0–45°C window and resume at hysteresis threshold. Use Value: Implements programmable T1/T2 thresholds and 100 mV hysteresis per JEITA spec, preventing lithium plating and thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery charge management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ25895RTWT | Same WQFN-24 package; adds USB PD 3.0 compliance and enhanced OTG current sensing; removes MaxCharge™ D+/D− handshake. | Required for USB-C PD ecosystems; not suitable for legacy MaxCharge™-only adapters. | Select BQ25895RTWT only if USB PD 3.0 negotiation and bidirectional current monitoring are required. |
| BQ25618RTWT | Lower 3-A max charge current; supports 1-cell and 2-cell configurations; lacks OTG boost; includes fuel gauge interface. | Targeted at cost-sensitive portable devices without OTG requirements and needing battery state-of-charge reporting. | Choose BQ25618RTWT when OTG is unnecessary and integrated fuel gauge communication simplifies BMS design. |
Compared with BQ25890HRTWT, BQ25895RTWT offers USB PD 3.0 but loses MaxCharge™ compatibility, while BQ25618RTWT trades OTG and high-current capability for dual-cell flexibility and fuel gauge integration - making BQ25890HRTWT optimal for MaxCharge™-enabled smartphone/tablet platforms demanding 5-A charging and 2.4-A OTG.
Availability
BQ25890HRTWT is available at Aetrix Electronics and suitable for smartphone fast charging, tablet power path management, and portable internet device battery systems requiring stable component supply, long-lifecycle support, and TI-qualified production-grade reliability.
Supply support for BQ25890HRTWT 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.
The BQ25890HRTWT belongs to TI's bqSwitcher™ battery management IC family, designed specifically for high-efficiency, high-input-voltage fast charging in space-constrained mobile devices with integrated power path and USB OTG capability.
FAQ
What is the maximum supported input voltage for the BQ25890HRTWT?
The BQ25890HRTWT supports an absolute maximum input voltage of 22 V on the VBUS pin, with recommended operating range from 3.9 V to 14 V. This wide range accommodates USB 2.0/3.0 ports, wall adapters, and high-voltage fast-charging sources including those implementing MaxCharge™ handshake protocols. Operation beyond 14 V is limited by internal overvoltage protection thresholds.
Does the BQ25890HRTWT support USB On-The-Go (OTG) functionality?
Yes, the BQ25890HRTWT supports USB OTG through its integrated boost converter, delivering an adjustable 4.5–5.5 V output on VBUS with up to 2.4 A current capability. It features hiccup-mode overcurrent protection, selectable 500 kHz/1.5 MHz switching frequency, and accurate output regulation - all configurable via I²C. The OTG function remains active even when VBUS is disconnected, drawing power solely from the battery.
How does the BQ25890HRTWT manage power path when the battery is absent or deeply discharged?
The BQ25890HRTWT implements Narrow VDC (NVDC) power path management, which maintains the SYS rail at ≥3.5 V regardless of battery presence or state. When no battery is connected or voltage drops below 2.5 V, the device supplies system power directly from VBUS while keeping SYS regulated - enabling instant-on operation. The BATFET remains off until battery voltage rises above the recharge threshold, preventing backfeed.
What thermal protection mechanisms are built into the BQ25890HRTWT?
The BQ25890HRTWT includes programmable thermal regulation at 120°C (typical) and thermal shutdown at 160°C with 30°C hysteresis. When junction temperature exceeds the regulation threshold, the device linearly reduces charge current to maintain safe operating temperature. All thermal responses are hardware-based and independent of I²C control, ensuring fail-safe operation. The WQFN-24 package's exposed PowerPAD enhances heat dissipation with proper PCB vias to PGND.
Can the BQ25890HRTWT be used without I²C communication?
Yes, the BQ25890HRTWT supports fully autonomous operation using factory-programmed default settings and pin-strapped configurations. Charge voltage, current, input limits, and safety thresholds can be set via external resistors (e.g., ILIM pin) and register defaults. I²C is optional for dynamic reconfiguration - such as adjusting OTG voltage or enabling JEITA profiles - but not required for basic charging and power path functions.
BQ25890HRTWT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MaxCharge™
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Current - Charging:
- -
- Programmable Features:
- -
- Fault Protection:
- Over Current, Over Temperature
- Charge Current - Max:
- 5A
- Battery Pack Voltage:
- -
- Voltage - Supply (Max):
- 14V
- Interface:
- I2C, USB
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-WQFN (4x4)
BQ25890HRTWT FAQ
1.How can I place an order for BQ25890HRTWT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ25890HRTWT 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 BQ25890HRTWT reliable?
The price and inventory of BQ25890HRTWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ25890HRTWT is usually 5 days.
3.What payment methods are accepted for BQ25890HRTWT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ25890HRTWT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ25890HRTWT?
BQ25890HRTWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ25890HRTWT 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 BQ25890HRTWT?
For technical support, including BQ25890HRTWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ25890HRTWT requirements.
6.How does Aetrix verify that BQ25890HRTWT is sourced from the original manufacturer or authorized distributors?
All BQ25890HRTWT 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 BQ25890HRTWT meets industry standards.
7.What is the process for return or replacement of BQ25890HRTWT?
All BQ25890HRTWT units undergo pre-shipment inspection (PSI). If there is an issue with BQ25890HRTWT, 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 BQ25890HRTWT part is unused and in its original packaging.
Return procedure for BQ25890HRTWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ25890HRTWT Tags
-
BQ21040DBVR
Texas Instruments
-
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
-
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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