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Texas Instruments BQ28Z610DRZR-R1
- Part No.:
- BQ28Z610DRZR-R1
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 12-VFDFN Exposed Pad
- Datasheet:
-
BQ28Z610DRZR-R1.pdf
- Description:
- IC BATT MFUNC LI-ION 1-2CL 12SON
- Quantity:
- Payment:
- Shipping:
Inventory:10,170
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Product details
Overview
BQ28Z610DRZR-R1 from Texas Instruments is a flash-programmable, autonomous Impedance Track™ gas gauge and integrated protection IC for 1- to 2-series Li-ion/Li-polymer battery packs. It delivers ±1 µV typical input offset error in its coulomb counter, supports 1-mΩ sense resistors with 1-mA current resolution, and provides high-side N-CH FET drive (CHG/DSG) enabling I²C communication during fault conditions - deployed in portable audio and tablet systems requiring precise state-of-charge estimation and pack-level safety.
For engineers reviewing the BQ28Z610DRZR-R1 datasheet, BQ28Z610DRZR-R1 pinout, BQ28Z610DRZR-R1 application, or BQ28Z610DRZR-R1 equivalent, key selection criteria include autonomous Master Mode I²C charging control, dual independent ADC architecture for simultaneous voltage/current sampling, SHA-1 authentication for secure battery authentication, and programmable overcurrent/overtemperature protection thresholds with sub-millisecond fault detection timing.
Technical Context
The BQ28Z610DRZR-R1 integrates a custom RISC CPU, dual high-accuracy ADCs (16-bit coulomb counter + multiplexed cell voltage/temperature sensing), and dedicated hardware for cell balancing, overvoltage/undervoltage/overcurrent/short-circuit protection, and BTP (Battery Trip Point) signaling for Windows® integration. Its analog front-end includes two independent ADCs supporting simultaneous current and voltage sampling with <1 µV typical input offset error.
It implements autonomous charge control via Master Mode I²C broadcasts of charging voltage and current commands - eliminating host MCU software overhead. The device uses internal 1.8-V LDO regulation, dual oscillators (16.78 MHz HF + 262.144 kHz LF), and flash memory (instruction and data) for field-upgradable firmware and configuration storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Coulomb Counter Offset Error | <1 µV typical - enables accurate current integration down to 1 mA with 1-mΩ sense resistor |
| I²C Interface Speed | 400 kHz - supports high-speed programming and real-time telemetry access without host intervention |
| Cell Voltage Range | Up to 30 V total stack (VC2–VSS) - supports 1S–2S Li-ion configurations with up to 8.5 V per cell |
| Protection Response Time | OCD: 1–31 ms; SCC: ≤915 µs - ensures fast fault isolation for battery safety compliance |
| Operating Temperature | –40°C to +85°C - qualified for industrial and portable consumer environments |
| Supply Current (Sleep) | 100 µA - extends battery shelf life during storage or standby |
| Internal Reference Drift | ±80 PPM/°C (VREF1/VREF2) - maintains voltage measurement accuracy across temperature |
Pinout & Package
Package: 12-pin VSON (DRZ), 4 mm × 2.5 mm body size, thermal pad (PWPD) electrically connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Power Ground | Primary reference for all analog and digital circuitry; connects to exposed thermal pad |
| SRN / SRP | Coulomb Counter Inputs | Differential inputs for sense resistor voltage; support 1-mΩ resistor with ±100 mV full-scale range |
| TS1 | Temperature Input / BTP Output | Analog input for NTC thermistor or internal sensor; configurable as Battery Trip Point signal for OS integration |
| SCL / SDA | I²C Interface | 400-kHz bidirectional bus interface requiring external pull-ups; supports Master Mode autonomous charging control |
| CHG / DSG | N-CH FET Drive Outputs | High-side gate drivers with 8.75–10.25 V on-state swing; enable serial communication during fault conditions |
| VC1 / VC2 | Cell Voltage Sensing | Inputs for least/most positive cell voltages; also serve as primary power supply (VC2) and balance current paths |
| PACK | Pack Voltage Sense | Direct connection to battery pack voltage; used for shutdown/startup detection and switchover logic |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous Master Mode I²C | Eliminates host MCU polling overhead by broadcasting charge voltage/current commands directly to charger ICs |
| Cell Balancing Support | Internal bypass FETs (RCB = 200 Ω typical) optimize capacity retention across cells in 2S configurations |
| SHA-1 Authentication Responder | Hardware-accelerated cryptographic engine prevents unauthorized or counterfeit battery pack replacement |
| Programmable Protection Thresholds | Configurable overcurrent (OCD/SCC/SCD), overvoltage, undervoltage, and overtemperature trip points via flash memory |
| Low-Power Sleep Mode | 100 µA quiescent current with wake-on-current capability (±0.3–7.2 mV threshold selectable) |
Applications
| Tablet Computing | Wireless Bluetooth® Speakers |
|---|---|
|
Use Scenario: Power management in thin-profile tablets with dual-cell Li-ion batteries requiring precise runtime prediction and thermal-aware charging. IC Role / Device Role / Timing Role: Gas gauge and protection controller performing real-time impedance tracking, coulomb counting, and autonomous charge coordination via Master Mode I²C. Use Value: Enables Windows® Battery Status reporting and BTP-triggered OS suspend/resume, improving user experience and battery longevity. |
Use Scenario: Compact wireless speaker designs where space-constrained 2S battery packs demand integrated safety and accurate SoC estimation. IC Role / Device Role / Timing Role: Pack-side battery manager providing cell balancing, short-circuit protection (<915 µs response), and SHA-1 authenticated firmware updates. Use Value: Supports seamless firmware upgrades and prevents unsafe third-party battery substitution while maintaining >99% SoC accuracy over lifecycle. |
| Portable Health Monitors | Wearable Audio Devices |
|
Use Scenario: Clinical-grade wearable health devices requiring long-term calibration stability and FDA-aligned safety monitoring. IC Role / Device Role / Timing Role: Safety-critical battery monitor delivering redundant overtemperature detection (NTC + internal sensor) and programmable fault latching. Use Value: Meets IEC 62368-1 requirements with dual ADC architecture and ±80 PPM/°C reference drift for consistent measurement integrity. |
Use Scenario: True wireless stereo (TWS) earbuds with ultra-low-power operation and rapid charge cycle validation. IC Role / Device Role / Timing Role: Low-quiescent (100 µA sleep) gas gauge with wake-on-current comparator (±0.3 mV min threshold) for activity-triggered telemetry. Use Value: Extends shelf life and enables precise end-of-charge detection using coulomb counter resolution down to 1 mA with 1-mΩ sense resistor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery gas gauge and protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ28Z610EVM-R1 | Evaluation module (not IC); includes PCB, firmware, GUI, and USB interface - not a drop-in replacement | Used for development and validation only; lacks production-grade packaging and qualification | Select only for design-in evaluation; requires separate BQ28Z610DRZR-R1 for volume deployment |
| BQ28Z620DRZR | Same DRZ package and pinout; adds enhanced security (AES-128), improved ADC linearity (±5.2 LSB INL), and extended temperature range (–40°C to +110°C) | Targeted at automotive and industrial applications requiring higher reliability and cryptographic strength | Choose BQ28Z620DRZR when AES encryption, wider temp range, or tighter ADC specs are mandatory |
Compared with BQ28Z610DRZR-R1, the BQ28Z620DRZR offers stronger security and broader operating margins but requires firmware revalidation; the BQ28Z610EVM-R1 serves only as a development tool and cannot replace the IC in production systems.
Availability
BQ28Z610DRZR-R1 is available at Aetrix Electronics and suitable for tablet computing, portable audio devices, and wearable health monitors requiring stable component supply, long-term firmware maintainability, and certified battery safety compliance.
Supply support for BQ28Z610DRZR-R1 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 technologies with decades of battery management system expertise.
The BQ28Z610DRZR-R1 belongs to TI's Impedance Track™ gas gauge product line, engineered specifically for high-accuracy, autonomous, and secure battery pack monitoring in space-constrained portable electronics.
FAQ
What is the primary function of the BQ28Z610DRZR-R1 in a battery pack?
The BQ28Z610DRZR-R1 serves as an integrated gas gauge and protection IC for 1- to 2-series Li-ion/Li-polymer battery packs. It performs real-time impedance-based state-of-charge estimation, autonomous charge control via Master Mode I²C, cell balancing, and programmable overvoltage/overcurrent/overtemperature protection - all within a single 12-pin VSON package. Its coulomb counter achieves <1 µV typical input offset error, enabling precision current measurement with 1-mΩ sense resistors.
Does the BQ28Z610DRZR-R1 support Windows® Battery Trip Point (BTP) functionality?
Yes, the BQ28Z610DRZR-R1 supports Battery Trip Point (BTP) signaling through its TS1 pin, which can be configured as a digital output to trigger Windows® OS-level actions such as suspend or hibernation when battery voltage crosses defined thresholds. This feature is explicitly documented in the device's pin function table and application diagrams for portable computing use cases.
What is the maximum supported battery stack voltage for the BQ28Z610DRZR-R1?
The BQ28Z610DRZR-R1 supports up to 30 V total stack voltage on its VC2 pin, with absolute maximum ratings allowing VC2 to reach VSS + 30 V. This accommodates 2-series Li-ion configurations (up to ~8.4 V nominal, ~8.5 V per cell), and its VC1/VC2 inputs are designed for differential cell voltage sensing across both cells in a 2S topology.
How does the BQ28Z610DRZR-R1 achieve autonomous charging control?
The BQ28Z610DRZR-R1 implements autonomous charging control through its dedicated Master Mode I²C interface, which broadcasts real-time charging voltage and current commands directly to compatible charger ICs - eliminating the need for host MCU intervention. This mode reduces software overhead and enables deterministic charge sequencing even when the system host is powered down or unresponsive.
Is SHA-1 authentication mandatory for BQ28Z610DRZR-R1 operation?
No, SHA-1 authentication is optional and configurable via firmware. The BQ28Z610DRZR-R1 includes a hardware SHA-1 responder to verify battery authenticity and prevent unauthorized replacements, but the device operates fully functional in non-authenticated mode. Authentication must be enabled and provisioned during manufacturing; it does not affect basic gas gauging or protection functions.
BQ28Z610DRZR-R1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Impedance Track™
- Package/Case:
- 12-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Multi-Function Controller
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1 ~ 2
- Fault Protection:
- Over Current, Over Temperature, Over/Under Voltage, Short Circuit
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-SON (2.5x4)
BQ28Z610DRZR-R1 FAQ
1.How can I place an order for BQ28Z610DRZR-R1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ28Z610DRZR-R1 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 BQ28Z610DRZR-R1 reliable?
The price and inventory of BQ28Z610DRZR-R1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ28Z610DRZR-R1 is usually 5 days.
3.What payment methods are accepted for BQ28Z610DRZR-R1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ28Z610DRZR-R1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ28Z610DRZR-R1?
BQ28Z610DRZR-R1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ28Z610DRZR-R1 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 BQ28Z610DRZR-R1?
For technical support, including BQ28Z610DRZR-R1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ28Z610DRZR-R1 requirements.
6.How does Aetrix verify that BQ28Z610DRZR-R1 is sourced from the original manufacturer or authorized distributors?
All BQ28Z610DRZR-R1 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 BQ28Z610DRZR-R1 meets industry standards.
7.What is the process for return or replacement of BQ28Z610DRZR-R1?
All BQ28Z610DRZR-R1 units undergo pre-shipment inspection (PSI). If there is an issue with BQ28Z610DRZR-R1, 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 BQ28Z610DRZR-R1 part is unused and in its original packaging.
Return procedure for BQ28Z610DRZR-R1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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