BQ296223DSGR

Texas Instruments BQ296223DSGR — bq2962x 2–4S Li‑ion/Li‑polymer Secondary Protection IC (WSON‑8, Tape & Reel)

The Texas Instruments BQ296223DSGR is a precision secondary protection IC engineered for 2–4 series Li‑ion/Li‑polymer battery packs. Part of TI’s bq2962x family, this device adds an extra layer of safety by monitoring cell voltages and asserting protections when preset thresholds are crossed. The “223” option defines a specific combination of overvoltage (OV) and undervoltage (UV) thresholds within the family; exact values are provided in the bq2962x datasheet option tables.

Built for compact battery packs and space‑constrained designs, the BQ296223DSGR comes in an 8‑pin WSON/VSON package (DSG) and is supplied in tape‑and‑reel (R) for efficient high‑volume assembly. With straightforward integration and TI’s proven quality, it’s a pragmatic choice for engineering teams who need dependable secondary protection without unnecessary complexity.

Quick highlights

• Brand/manufacturer: Texas Instruments (TI)
• Series/family: bq2962x
• MPN: BQ296223DSGR
• Function: Secondary battery pack protector
• Cells supported: 2 to 4 series Li‑ion/Li‑polymer
• Protection features: Overvoltage, undervoltage (option‑selectable thresholds)
• Package: 8‑WSON/VSON (DSG)
• Packaging: Tape & Reel (DSGR)
• Mounting: Surface mount (SMD)
• Pin count: 8

What the BQ296223DSGR does — and why it matters

Primary battery protection (often inside a gauge/protector IC) handles day‑to‑day monitoring and balancing. Secondary protection is the independent safety backstop that acts when conditions stray beyond predefined safe limits. The Texas Instruments BQ296223DSGR fills this role by monitoring series‑cell voltages in 2–4S packs and asserting protection when the configured overvoltage or undervoltage thresholds are exceeded.

In practice, this layered approach helps designers achieve robust fault tolerance and meet stringent safety expectations in consumer, industrial, and light mobility applications. Using a dedicated, option‑coded secondary protector like the BQ296223DSGR reduces the likelihood of single‑point failures, adds confidence for regulatory reviews, and provides peace of mind for both OEMs and end users.

Note: The device’s exact response behavior and threshold values depend on the selected option code; for the BQ296223, refer to the datasheet’s threshold option tables for the precise OV/UV numbers.

Key specifications

• Device category: Battery Management ICs (secondary protection)
• Family/series: bq2962x
• MPN: BQ296223DSGR (223 = OV/UV threshold option)
• Number of series cells: 2 to 4
• Protection features: Overvoltage, undervoltage (option‑selectable)
• Package/case: 8‑WSON/VSON (DSG)
• Packaging: Tape & Reel (DSGR)
• Mounting type: Surface mount
• Pin count: 8
• Power consumption: Not specified in datasheet
• Operating temperature range: Not specified in datasheet
• Threshold values (OV/UV): Defined by option 223; see datasheet tables

If your design requires a particular combination of OV and UV thresholds, confirm that option 223 aligns with your system’s safety envelope; TI offers other bq2962x options that select different threshold combinations.

Understanding the “223” option

Within the bq2962x family, each option code corresponds to a specific pairing of overvoltage and undervoltage thresholds. This lets you match the protector’s trip points to your cell chemistry and the primary BMS strategy. For BQ296223 specifically:

• The option defines exact OV and UV threshold values and behaviors (see the TI datasheet’s option tables for the numerical values).
• No firmware programming is required to set these thresholds; they’re fixed by the option code, simplifying production and revision control.

This option‑based selection model helps sourcing and compliance teams maintain consistency across builds while giving engineering a clean path to choose the safety envelope best suited to the pack’s operating limits.

Applications and design fit

• 2–4S Li‑ion/Li‑polymer battery packs
• Secondary protection stage in battery management systems (BMS)

Where it fits well:

• Designs that already use a primary protector or gauge/monitor and need an independent, fixed‑threshold safety layer.
• Compact packs where an 8‑pin WSON/VSON device minimizes board area.
• Programs that value straightforward, option‑code‑driven configuration to simplify manufacturing.

As always, check the datasheet to confirm the BQ296223DSGR’s thresholds and functional behavior align with your cell vendor’s recommended limits and with your system’s failure‑mode analyses.

Package and assembly notes

• Package: DSG indicates TI’s 8‑pin WSON/VSON package, a low‑profile, thermally efficient format well suited for dense battery PCBs.
• Packaging: The trailing “R” in BQ296223DSGR signifies Tape & Reel, aiding automated pick‑and‑place.
• Mounting: Surface mount; use TI’s recommended land pattern from the datasheet/package drawing for best solderability and reliability.
• Moisture sensitivity and reflow: Not specified in datasheet. Consult TI’s package documentation and your assembly house profiles.

Practical layout guidance:

• Keep high‑current paths away from the sense and reference nodes to minimize noise coupling.
• Follow TI’s pinout and layout recommendations to ensure stable sensing of cell voltages.
• Validate threshold trips on your assembled boards across the operating temperature range defined by your product requirements.

Lifecycle, availability, and sourcing guidance

• Lifecycle status: Active (per TI product page at the time of writing)
• Manufacturer: Texas Instruments
• Recommended replacements: Not specified; TI offers other bq2962x options with different threshold sets if you need alternate OV/UV combinations. Always verify pin/package and behavior before substitution.

Sourcing tips:

• Use the full orderable part number “BQ296223DSGR” when requesting quotes to ensure you receive the correct option code, package, and packaging.
• If second‑sourcing within the family, align on the option code first; differences in thresholds can affect safety margins and compliance test results.
• Engage authorized distributors listed on TI’s product page to ensure traceability and the latest revision control.

Environmental and regulatory compliance

• RoHS/Environmental status: Not specified in datasheet
• Compliance documents: Not specified in datasheet

Because secondary protection contributes to overall battery safety strategy, your compliance plan should consider:

• Verifying threshold selections against cell manufacturer recommendations.
• Documenting layered protection (primary + secondary) in your safety case.
• Testing trip behavior under worst‑case tolerances and environmental conditions.

For formal declarations (e.g., RoHS, REACH), request current compliance statements from TI or authorized distributors and reference the exact orderable PN (BQ296223DSGR).

Selecting within the bq2962x family

Choosing the right bq2962x option comes down to aligning OV/UV thresholds with your system’s safety and performance targets:

• Map your battery’s safe operating limits and margin strategy.
• Identify which option code’s thresholds best match those limits (consult the datasheet tables).
• Verify the number of series cells (2–4) and ensure your pack topology is supported.
• Confirm package constraints: the DSG WSON/VSON 8‑pin fits most compact boards, but review your mechanical envelope.

This approach prevents late‑stage changes and streamlines procurement because the option code is embedded in the orderable part number.

Design‑in checklist

• Cells in series: 2, 3, or 4? Confirm against your product’s power needs.
• Thresholds: Validate the BQ296223’s OV/UV values from the datasheet option tables against your safety requirements.
• Primary vs. secondary roles: Ensure coordination with your primary protector/gauge for orderly fault handling.
• PCB layout: Allocate clean routing for sense lines; follow TI’s land pattern guidance.
• Packaging and logistics: Specify BQ296223DSGR for Tape & Reel in production BOMs.
• Qualification testing: Plan threshold verification across process and environmental corners.

Frequently asked questions (FAQs)

Q: What does the “223” option mean for BQ296223?
A: It specifies a particular combination of overvoltage and undervoltage threshold levels within the bq2962x family. Refer to the threshold option tables in the TI datasheet to see the exact values for option 223.

Q: What does the DSGR suffix indicate?
A: DSG denotes the 8‑pin WSON/VSON package; the trailing R indicates Tape & Reel packaging.

Q: How many cells does the Texas Instruments BQ296223DSGR support?
A: It supports 2 to 4 series Li‑ion/Li‑polymer cells.

Q: Does the BQ296223DSGR provide cell balancing or current sensing?
A: Not specified in datasheet. The device is characterized as a secondary protection IC focused on OV/UV thresholds; consult the datasheet for capabilities and application details.

Q: Is the BQ296223DSGR AEC‑Q100 qualified?
A: Not specified in datasheet. Check the TI product page or contact TI for automotive qualification status if required.

Q: Can I substitute another bq2962x option for BQ296223DSGR?
A: Possibly, if your design can accept different OV/UV thresholds. Verify pinout, package, and threshold tables in the datasheet before substitution and re‑qualify your safety tests accordingly.

Q: What are the exact OV/UV values for BQ296223?
A: The numerical thresholds are defined by the option and listed in the TI bq2962x datasheet tables. Always use the datasheet for definitive values.

Resources

• TI product page: https://www.ti.com/product/BQ2962
• TI bq2962x datasheet: https://www.ti.com/lit/ds/symlink/bq2962x.pdf

Summary

The Texas Instruments BQ296223DSGR is a compact, option‑coded secondary protection IC for 2–4S Li‑ion/Li‑polymer battery packs. As part of the bq2962x family, it brings fixed, datasheet‑defined OV/UV thresholds (option 223) in an 8‑pin WSON/VSON package suitable for high‑volume SMD assembly. For engineering teams, it offers a clear, low‑friction path to add a critical safety layer; for sourcing and quality teams, the explicit option code simplifies procurement and repeatability. Verify the threshold table in the TI datasheet, align it with your cell vendor’s guidance, and you’ll have a robust foundation for a safer battery design.