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Texas Instruments BQ296213DSGR
- Part No.:
- BQ296213DSGR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
BQ296213DSGR.pdf
- Description:
- IC BATT PROT LI-ION 2-4CEL 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,795
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Product details
Overview
BQ296213DSGR from Texas Instruments is a high-accuracy, low-power overvoltage protection IC for 2–4 series Li-ion battery packs, featuring factory-programmed 4.35V OVP threshold, 3-second fixed delay timer, ±10mV OVP accuracy, active-high OUT signal, and 3.3V regulated output supply delivering up to 2mA. It is used in notebook PC battery protection circuits to trigger fuse-blowing FETs upon cell overvoltage.
For engineers reviewing the BQ296213DSGR datasheet, BQ296213DSGR pinout, BQ296213DSGR application, or BQ296213DSGR equivalent, this page delivers verified technical context, real-world timing behavior, regulator self-disable logic, and precise OVP/UV thresholds - all confirmed for the exact BQ296213DSGR variant per TI's SLUSBU5V datasheet (Rev. September 2025).
Technical Context
The BQ296213DSGR independently monitors each cell voltage (V1–VSS to V4–V3) against a factory-trimmed 4.35V overvoltage threshold with 300mV hysteresis and ±10mV accuracy at 25°C. Upon detection, it initiates a precisely timed 3-second internal delay before asserting the CMOS-active-high OUT pin to drive an external NMOS fuse-control FET.
Its integrated 3.3V regulated output (REG) supplies up to 2mA for always-on circuits like RTCs, and self-disables when any cell voltage drops below the factory-set 2.5V undervoltage threshold for ≥6 seconds. Supply current is 4µA (REG on) or 1.2µA (REG off), with input leakage <100nA per cell sense pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| OVP Threshold | 4.35V ±10mV at 25°C - enables precise cell-level overvoltage cutoff without false triggers in multi-cell stacks. |
| OVP Delay Timer | 3.0s ±20% - provides deterministic fault response window before fuse activation, preventing transient-induced shutdowns. |
| Regulated Output | 3.3V ±30mV at 500µA load - powers RTC or supervisor ICs with stable voltage; self-disables if any cell falls below 2.5V. |
| Supply Current | 4µA (REG enabled), 1.2µA (REG disabled) - extends battery shelf life during storage or low-power states. |
| Cell Input Leakage | <100nA per Vx pin - minimizes parasitic discharge across series cells, preserving pack balance and capacity. |
| Operating Temp | –40°C to +110°C - supports operation in demanding environments including ultrabook battery compartments and medical backup systems. |
| Output Drive | CMOS active-high OUT, 4.5mA source capability - directly drives gate of low-Rds(on) NMOS fuse-control FET without buffer. |
Pinout & Package
Package: 8-pin WSON (2.00mm × 2.00mm), thermally enhanced with exposed pad connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Unregulated input (3–20V); powers internal circuitry and REG LDO; requires RC filter for noise immunity. |
| VSS | Ground reference | IC ground and negative terminal of lowest cell; must be connected first during assembly to prevent REG damage. |
| V1–V4 | Cell voltage sense inputs | Differential inputs monitoring (V1–VSS), (V2–V1), (V3–V2), (V4–V3); each draws <100nA leakage. |
| OUT | Overvoltage fault signal | CMOS active-high output; asserts after 3s delay to enable external NMOS FET for fuse blow control. |
| REG | Regulated supply output | 3.3V output (2mA max); self-disables if any cell <2.5V for ≥6s; requires 0.47µF ceramic capacitor to VSS. |
| PWPD | Exposed thermal pad | Must be soldered to PCB VSS plane for thermal dissipation and EMI reduction; not electrically functional. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed OVP | 4.35V threshold with ±10mV accuracy ensures consistent, production-ready overvoltage cutoff without calibration. |
| Fixed 3-second delay timer | Eliminates need for external timing components and avoids software-based delays vulnerable to MCU reset or clock drift. |
| Self-disabling 3.3V REG output | Automatically shuts down when any cell drops below 2.5V, preventing deep discharge and extending battery cycle life. |
| Ultra-low quiescent current | 1.2µA with REG disabled enables >10-year shelf life in battery-backed applications such as UPS and medical devices. |
| Cell-input leakage <100nA | Maintains inter-cell voltage balance in 2–4S configurations, reducing risk of imbalance-induced premature OVP trips. |
Applications
| Ultrabook Battery Protection | Notebook PC Pack Monitoring |
|---|---|
Use Scenario: Real-time cell voltage monitoring in slim-profile ultrabook battery packs with tight thermal constraints. IC Role / Device Role / Timing Role: Second-level hardware OVP supervisor that independently checks each cell and triggers fuse blow via OUT after 3s delay. Use Value: Prevents lithium plating and thermal runaway by enforcing strict 4.35V/cell limit with ±10mV accuracy, even under temperature variation. |
Use Scenario: Integrated overvoltage and regulated power delivery in OEM notebook battery management systems. IC Role / Device Role / Timing Role: Provides both fault signaling (via active-high OUT) and clean 3.3V supply (REG) for embedded fuel gauges and RTCs. Use Value: Eliminates need for separate LDO and protection IC, reducing BOM count and PCB area in space-constrained battery modules. |
| Medical Portable Device Backup | UPS Battery Safety Control |
Use Scenario: Long-term standby power for critical medical telemetry units requiring fail-safe battery disconnect. IC Role / Device Role / Timing Role: Monitors 3S Li-ion backup stack and disables REG output if any cell falls below 2.5V, halting downstream circuit drain. Use Value: Extends usable backup runtime by preventing parasitic load during deep discharge, while maintaining 4.35V OVP integrity. |
Use Scenario: Overvoltage supervision in uninterruptible power supply battery strings where charger overvoltage could cause fire hazard. IC Role / Device Role / Timing Role: Detects overvoltage on any cell in 4S configuration and asserts OUT to activate external fuse-blow FET within 3 seconds. Use Value: Enables rapid, hardware-enforced disconnection independent of host controller - critical for safety-critical UPS compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ296212DSGR | Same package and pinout; OVP = 4.50V, delay = 3.0s, UV = 2.5V, REG = 3.3V - differs only in OVP threshold. | Suitable where higher 4.50V/cell tolerance is required (e.g., high-temperature operation or wider cell Vmax spec). | Select BQ296212DSGR if system design allows 4.50V OVP; otherwise BQ296213DSGR's 4.35V matches standard Li-ion charging profiles. |
| BQ296233DSGR | Same package and pinout; OVP = 4.45V, delay = 6.5s, UV = 2.5V, REG = 3.3V - differs in OVP and delay timing. | Preferred where longer fault confirmation window is needed to reject short transients (e.g., in noisy industrial UPS environments). | Choose BQ296233DSGR only if 6.5s delay is explicitly required; BQ296213DSGR's 3s delay offers faster response for consumer-grade notebooks. |
Compared with BQ296212DSGR and BQ296233DSGR, the BQ296213DSGR provides the optimal balance of fast (3s) fault response and industry-standard 4.35V OVP threshold - making it ideal for mainstream ultrabook and notebook battery packs where timing and voltage alignment with JEITA charging curves are critical.
Availability
BQ296213DSGR is available at Aetrix Electronics and suitable for notebook PC battery protection, ultrabook pack monitoring, and medical portable device backup requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for BQ296213DSGR 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, with decades of expertise in battery safety ICs.
The BQ296xxx family is designed specifically for second-level hardware overvoltage protection in multi-cell Li-ion battery packs, integrating precision sensing, deterministic timing, and regulated auxiliary power in a single compact WSON package.
FAQ
What is the exact overvoltage threshold and accuracy of the BQ296213DSGR?
The BQ296213DSGR has a factory-programmed overvoltage threshold of 4.35V with ±10mV accuracy at 25°C, and ±54mV accuracy across the full –40°C to +110°C operating range. This specification is confirmed in Table 6-5 of the TI SLUSBU5V datasheet and applies exclusively to the BQ296213DSGR variant, not the broader BQ2962 family.
How does the BQ296213DSGR regulate its 3.3V output and what is its maximum load?
The BQ296213DSGR delivers a regulated 3.3V output (REG pin) with ±30mV tolerance at 500µA load and supports up to 2mA continuous current. It self-disables if any monitored cell voltage falls below 2.5V for ≥6 seconds. The BQ296213DSGR requires a 0.47µF ceramic capacitor from REG to VSS for stability, as specified in Section 6.5 and Figure 8-1 of the datasheet.
What is the function of the OUT pin on the BQ296213DSGR and how is it driven?
The OUT pin on the BQ296213DSGR is a CMOS active-high fault signal that asserts after a fixed 3-second delay when any cell exceeds 4.35V. It sources up to 4.5mA and is designed to directly drive the gate of an external NMOS FET for fuse-blow control. Its behavior is documented in Sections 5, 6.5, and 8.1 of the BQ296213DSGR datasheet.
Does the BQ296213DSGR support 2-cell, 3-cell, and 4-cell battery configurations?
Yes, the BQ296213DSGR supports 2-series, 3-series, and 4-series Li-ion battery stacks via its four independent cell sense inputs (V1–V4). Unused inputs (e.g., V4 in a 2S pack) are shorted to the adjacent lower pin (V3), as defined in Section 7.4.3 and Figure 8-2 of the official TI datasheet for BQ296213DSGR.
What is the supply current consumption of the BQ296213DSGR in active and low-power modes?
The BQ296213DSGR consumes 4µA typical supply current when the REG output is enabled and 1.2µA when REG is disabled - both values measured across 0°C to +60°C per Section 6.5 of the datasheet. These ultra-low currents are validated for the BQ296213DSGR variant and enable multi-year battery shelf life in always-connected applications.
BQ296213DSGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Battery Protection
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 2 ~ 4
- Fault Protection:
- Over Voltage
- Interface:
- -
- Operating Temperature:
- -40°C ~ 110°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
BQ296213DSGR FAQ
1.How can I place an order for BQ296213DSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ296213DSGR 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 BQ296213DSGR reliable?
The price and inventory of BQ296213DSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ296213DSGR is usually 5 days.
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BQ296213DSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ296213DSGR 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 BQ296213DSGR?
For technical support, including BQ296213DSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ296213DSGR requirements.
6.How does Aetrix verify that BQ296213DSGR is sourced from the original manufacturer or authorized distributors?
All BQ296213DSGR 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 BQ296213DSGR meets industry standards.
7.What is the process for return or replacement of BQ296213DSGR?
All BQ296213DSGR units undergo pre-shipment inspection (PSI). If there is an issue with BQ296213DSGR, 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 BQ296213DSGR part is unused and in its original packaging.
Return procedure for BQ296213DSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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