BQ28Z610DRZR

Texas Instruments BQ28Z610DRZR Fuel Gauge with Integrated Protector for 1–2S Li‑ion

The Texas Instruments BQ28Z610DRZR is a compact, production‑ready battery fuel gauge with an integrated pack protector, purpose‑built for 1–2 series Li‑ion/Li‑polymer cell packs. Leveraging TI’s Impedance Track algorithm and an SMBus/I2C‑compatible interface, it delivers accurate state‑of‑charge (SoC) and state‑of‑health (SoH) reporting across temperature and battery aging while consolidating key protection functions (overvoltage, undervoltage, overcurrent, and short‑circuit). Pack designers for portable, industrial, and robotic systems can use the BQ28Z610DRZR to reduce external components, streamline firmware integration, and accelerate time to market.

At a Glance

• Brand/Manufacturer: Texas Instruments
• MPN: BQ28Z610DRZR
• Category: Battery Management > Fuel Gauges & Monitors with Protection
• Cells Supported: 1–2 series Li‑ion/Li‑polymer
• Fuel Gauging Algorithm: Impedance Track
• Interface: SMBus / I2C‑compatible
• Protection: Integrated pack protection (OV, UV, OCD, SCD)
• Operating Temperature: −40°C to +85°C
• Package: 12‑lead SON (DRZ)
• Packaging: Tape & Reel (suffix DRZR)
• Mounting Type: Surface Mount
• Pin Count: 12
• Lifecycle Status: Active
• RoHS: RoHS Compliant
• Product Page: https://www.ti.com/product/BQ28Z610
• Datasheet: https://www.ti.com/lit/ds/symlink/bq28z610.pdf

Note: Detailed electrical limits such as exact protection thresholds, sense resistor recommendations, and current consumption are not specified here—consult the BQ28Z610 datasheet.

Why Designers Choose the BQ28Z610DRZR

The BQ28Z610DRZR integrates what most 1–2S packs need: reliable gauging plus robust protection in a footprint‑efficient 12‑SON package. Here’s what stands out:

• Accurate, field‑proven gauging: TI’s Impedance Track algorithm models the battery’s dynamic behavior to maintain SoC/SoH accuracy over temperature, load, and cell aging—supporting consistent runtime estimates and remaining capacity reporting.
• Integrated safety functions: Built‑in overvoltage, undervoltage, overcurrent, and short‑circuit detection eliminate the need for discrete protection ICs in many designs, simplifying the bill of materials and PCB layout.
• Simple host integration: The SMBus/I2C‑compatible interface offers a familiar command set for configuration, data logging, and diagnostics. Firmware teams can quickly read SoC/SoH and implement system protections.
• Compact, production‑ready package: The 12‑lead SON (DRZ) package helps minimize area in dense handheld designs and supports automated assembly with its DRZR tape‑and‑reel ordering option.
• Flexible for 1S or 2S packs: Whether you’re building a high‑current single‑cell pack or a 2‑cell solution for higher voltage rails, the same device scales across form factors and product tiers.

Key Specifications

Only parameters provided by the official part information are listed below. For additional limits, timing, and calibration details, see the datasheet.

• Manufacturer: Texas Instruments
• MPN: BQ28Z610DRZR
• Cells Supported: 1–2 series Li‑ion/Li‑polymer
• Gauging Algorithm: Impedance Track
• Interface: SMBus / I2C‑compatible
• Protection: Integrated pack protection (OV, UV, OCD, SCD)
• Operating Temperature: −40°C to +85°C
• Package: 12‑lead SON (DRZ)
• Mounting Type: Surface Mount
• Pin Count: 12
• Lifecycle Status: Active
• Environmental/Regulatory: RoHS Compliant

Not specified in datasheet (here):

• Protection threshold voltages and delays
• Current measurement range and sense resistor value
• Quiescent and sleep current
• Cell balancing capability

Applications and Use Cases

The Texas Instruments BQ28Z610DRZR is well suited to space‑constrained, battery‑powered systems that need reliable fuel gauging and on‑pack safety:

• 1–2S Li‑ion/Li‑polymer battery packs: Consumer, industrial, and custom battery modules.
• Portable equipment and handheld devices: Data collectors, test tools, medical portables (non‑implant), rugged handhelds, scanners, and POS terminals.
• Industrial handhelds and instruments: Field analyzers, inspection cameras, handheld meters, portable printers.
• Power banks and backup battery packs: Smart power packs requiring accurate SoC and safety protections.
• Drones and robotics battery packs: Lightweight packs where integrated gauging and protection reduce wiring and component count.

Across these applications, the BQ28Z610DRZR helps product teams:

• Deliver more consistent runtime estimates to end users.
• Reduce external protection circuitry and associated PCB area.
• Simplify firmware and manufacturing test through a standard SMBus/I2C interface.

Design and Integration Considerations

Use the following guidance as a starting point. Always validate with the BQ28Z610 datasheet and your end‑equipment requirements.

• Battery characterization and learning: TI’s Impedance Track‑based gauges are typically deployed with a characterization and “learning cycle” process to refine model parameters for the actual cell chemistry and pack construction. This improves SoC/SoH accuracy across temperature and aging. Consult TI documentation for the recommended procedure.
• Host communication: Plan SMBus/I2C traffic for periodic SoC/SoH reads, alarm/status polling, and configuration writes during manufacturing. Reserve bus bandwidth for time‑critical events and consider error handling for bus contention in multi‑drop systems.
• Protection coordination: While the device integrates OV/UV/OCD/SCD monitoring, systems often implement layered protection (pack‑side + system‑side). Ensure the system controller reacts appropriately to protection flags and defines safe shutdown behavior.
• Thermal and mechanical: The 12‑SON (DRZ) footprint is compact. Observe TI’s land pattern recommendations, pay attention to thermal relief for ground connections, and maintain clear current return paths around sense elements if applicable in your design.
• Production configuration: Plan a repeatable process for programming configuration parameters, calibration, and optional logging settings during manufacturing. Retain golden images and version control for configuration files.

Not specified in datasheet (here): Precise calibration commands, OTP/EEPROM details, and learning‑cycle step timing. Always consult the datasheet before finalizing the procedure.

Lifecycle, Compliance, and Supply Chain

• Lifecycle Status: Active (per Texas Instruments product information). Always confirm current status on the product page.
• Environmental Compliance: RoHS Compliant.
• Availability: Check TI and authorized distributors for current availability. Inventory can fluctuate; plan buffers for ramp and service spares.
• Packaging & Orderable: The DRZR suffix denotes tape‑and‑reel packaging for the DRZ 12‑SON package, supporting high‑volume surface‑mount assembly.

For program risk reduction, align your AVL/AML around the Texas Instruments BQ28Z610DRZR and maintain second‑source plans at the pack level if your product’s volumes or service lifetimes demand it.

Ordering Information

• Part Number: BQ28Z610DRZR
• Manufacturer: Texas Instruments
• Package: 12‑lead SON (DRZ)
• Packaging: Tape & Reel (TR)
• Mounting: Surface Mount

Notes:

• DRZR specifically indicates tape‑and‑reel for automated assembly.
• For price and lead time, refer to TI or authorized distributors; pricing varies by quantity and channel.

Compliance and Standards

• RoHS Status: RoHS Compliant
• Additional Compliance: Not specified in datasheet

If you require documentation for regional environmental reporting or reliability data, check the TI product page for compliance documents and quality reports.

Alternatives and Cross‑References

• Approved Alternates: None listed.
• Policy Guidance: Use only verified pin‑compatible alternates with equivalent protection thresholds and gauge firmware. Validate performance and safety in the end application before substitution.

Where no direct alternate is approved, consider pack‑level redesign flexibility (e.g., connector and harness options) to accommodate future sourcing changes without system requalification.

Practical Tips for a Smooth Bring‑Up

• Start early with a representative cell: Characterize on the exact cell SKU and lot you plan to use in production to minimize model drift.
• Plan for temperature extremes: Validate gauging and protection behavior across −40°C to +85°C with your system’s load profiles.
• Exercise protections in test: Intentionally provoke boundary conditions during validation to ensure the host reacts correctly to protective actions.
• Keep a clean SMBus: Proper pull‑ups, line length management, and bus error handling reduce intermittent faults in the field.
• Document your production flow: Lock down configuration versions, calibration data, and programming steps to ensure consistent pack behavior across builds.

These steps don’t replace the datasheet or technical reference manual—use them to structure your engineering and manufacturing plans.

Frequently Asked Questions (FAQs)

• How many cells does the Texas Instruments BQ28Z610DRZR support?

• It supports 1–2 series Li‑ion/Li‑polymer cell packs.

• What interface does it use for communication?

• An SMBus/I2C‑compatible interface for host communication and configuration.

• Does it include protection features?

• Yes. It integrates pack protection functions such as overvoltage, undervoltage, overcurrent, and short‑circuit detection.

• What is the operating temperature range?

• −40°C to +85°C.

• What does the DRZR suffix mean?

• DRZR denotes tape‑and‑reel packaging for the DRZ 12‑SON package.

• Is the BQ28Z610DRZR RoHS compliant?

• Yes, it is listed as RoHS Compliant.

• What is the lifecycle status?

• Active, according to the Texas Instruments product page.

• Where can I find detailed electrical specifications like protection thresholds or current consumption?

• These are not specified here. Refer to the official datasheet: https://www.ti.com/lit/ds/symlink/bq28z610.pdf

Resources

• Product Page: https://www.ti.com/product/BQ28Z610
• Datasheet: https://www.ti.com/lit/ds/symlink/bq28z610.pdf

Summary

The Texas Instruments BQ28Z610DRZR brings together a proven Impedance Track fuel gauge and integrated pack protection in a compact, surface‑mount 12‑SON (DRZ) package. Designed for 1–2S Li‑ion/Li‑polymer packs, it streamlines battery management by combining accurate SoC/SoH reporting with essential safety features and a standards‑based SMBus/I2C interface. With an active lifecycle status and RoHS compliance, it’s a strong fit for portable equipment, industrial handhelds, power banks, and drone/robotics packs where PCB area, reliability, and predictable runtime matter. For complete electrical limits and configuration procedures, consult the TI datasheet and product documentation before finalizing your design.