My Inquiry
My Account
Texas Instruments BQ296107DSGT
- Part No.:
- BQ296107DSGT
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
BQ296107DSGT.pdf
- Description:
- IC BATT PROT LI-ION 2-4CEL 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:866
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BQ296107DSGT from Texas Instruments is a high-accuracy, low-power overvoltage protection IC for 2–4-series Li-ion battery packs, featuring factory-programmed 4.50 V OVP threshold, 6.5 s fixed delay timer, ±10 mV OVP accuracy, active-high OUT signal, and 3.3 V regulated output supply delivering up to 2 mA. It is used in notebook PC battery packs to prevent cell overcharge and power real-time clock circuits during standby.
For engineers reviewing the BQ296107DSGT datasheet, BQ296107DSGT pinout, BQ296107DSGT application, or BQ296107DSGT equivalent, this page delivers verified technical context, exact pin functions, confirmed operating parameters (–40°C to +110°C), package mapping (8-pin WSON, 2 mm × 2 mm), and two validated alternative parts with documented functional and application differences.
Technical Context
The BQ296107DSGT independently monitors each cell voltage in 2–4-series stacks using precision analog comparators referenced to a factory-trimmed 4.50 V overvoltage threshold. Upon detection, it initiates a fixed 6.5 s internal delay before asserting the CMOS-active-high OUT signal to drive an external NMOS FET for fuse blow control.
Its integrated 3.3 V regulated supply (±1.5% load regulation, 0–2 mA) powers always-on peripherals such as RTCs and features self-disable when any cell drops below the factory-set 2.8 V undervoltage threshold, with 6 s hysteresis delay and 300 mV hysteresis to prevent oscillation during discharge transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| OVP Threshold | Factory-programmed 4.50 V ±10 mV - ensures precise cell-level overcharge cutoff without calibration. |
| OVP Delay Timer | Fixed 6.5 s - provides deterministic fault response time for fuse-blow sequencing in battery safety systems. |
| Regulated Output | 3.3 V ±2%, 0–2 mA - powers RTC or microcontroller backup circuitry with stable low-noise supply. |
| Supply Current | 4 µA (REG on), 1.2 µA (REG off) - enables multi-year battery shelf life in always-connected protection circuits. |
| Cell Input Leakage | <100 nA per Vx pin - minimizes parasitic drain on individual cells during long-term storage. |
| Operating Temp Range | –40°C to +110°C - supports operation in harsh thermal environments including laptop battery compartments. |
| UV Threshold | Factory-set 2.8 V - disables REG output to prevent deep discharge damage when any cell falls below safe level. |
Pinout & Package
Package: 8-pin WSON (2.00 mm × 2.00 mm), thermally enhanced with exposed pad connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power input | Unregulated supply input (3–20 V); connects to top of battery stack; requires RC filter for noise immunity. |
| VSS | Ground reference | IC ground and negative terminal of lowest cell; must be connected first during assembly to avoid REG pin damage. |
| V1–V4 | Cell voltage sense inputs | Differential inputs monitoring (V1–VSS), (V2–V1), (V3–V2), (V4–V3); support 2–4-series configurations via pin shorting. |
| OUT | Fault signal output | CMOS active-high output; drives NMOS gate to short fuse to ground upon OVP detection after 6.5 s delay. |
| REG | Regulated supply output | 3.3 V output (max 2 mA); requires 0.47 µF ceramic capacitor at pin; self-disables if any cell <2.8 V for 6 s. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed OVP | 4.50 V ±10 mV - eliminates external resistor network and calibration, reducing BOM and test cost. |
| Fixed 6.5 s OVP delay | Deterministic timing for fuse-blow coordination - avoids race conditions between charger and protector logic. |
| Self-disabling 3.3 V REG | Turns off automatically when any cell falls below 2.8 V - prevents battery depletion during storage or fault conditions. |
| Ultra-low quiescent current | 1.2 µA with REG disabled - extends battery shelf life beyond 10 years in unpowered storage scenarios. |
| High-accuracy cell sensing | <100 nA input leakage per Vx pin - maintains cell voltage integrity without loading effects during long-term monitoring. |
Applications
| Notebook PC Battery Pack | Ultrabook Power Management |
|---|---|
|
Use Scenario: Monitors 3-cell Li-ion stack in thin-profile laptop battery modules where space and thermal constraints limit discrete protection solutions. IC Role / Device Role / Timing Role: Second-level overvoltage protector triggering NMOS-based fuse blow after 6.5 s delay; supplies 3.3 V to RTC during sleep mode. Use Value: Prevents thermal runaway from overcharged cells while maintaining accurate timekeeping without auxiliary power sources. |
Use Scenario: Integrated into compact ultrabook battery packs requiring ultra-low standby current and reliable cell-level voltage supervision. IC Role / Device Role / Timing Role: Independent cell voltage monitor with self-disable REG output; asserts active-high OUT only upon confirmed 4.50 V overvoltage across any cell. Use Value: Enables >5-year shelf life with 1.2 µA quiescent draw and eliminates need for external LDO or supervisor ICs. |
| Medical Portable Device | UPS Battery Backup |
|
Use Scenario: Protects sealed 4-series Li-ion packs in portable diagnostic equipment where failure modes must comply with IEC 62368-1. IC Role / Device Role / Timing Role: Overvoltage safety controller with ±10 mV accuracy and 6.5 s delay - meets strict fault-response timing requirements for Class II medical devices. Use Value: Provides certified secondary protection layer independent of host MCU, ensuring fail-safe operation even during firmware faults. |
Use Scenario: Used in enterprise-grade UPS battery modules to safeguard against overcharge during extended grid-failure charging cycles. IC Role / Device Role / Timing Role: Regulated 3.3 V supply powers UPS controller's nonvolatile memory and real-time clock; OVP triggers fuse isolation before cell venting. Use Value: Maintains system time and configuration data during outages while preventing catastrophic cell failure under sustained overvoltage stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ296114DSGT | OVP = 4.50 V, delay = 4.0 s, UV = 2.5 V, REG = 3.3 V | Shorter OVP delay and lower UV threshold - suitable for faster-reacting systems with tighter discharge margins. | Select when 4 s fault response is required and 2.5 V UV disable point aligns with pack design. |
| BQ296203DSGT | OVP = 4.50 V, delay = 6.5 s, UV = 2.5 V, REG = 3.3 V; BQ2962 family | Same OVP/delay/REG but different UV threshold and internal architecture - not pin-compatible due to swapped OUT/REG pin positions. | Choose only if redesigning PCB layout; offers identical protection timing but requires board revision. |
Compared with BQ296107DSGT, BQ296114DSGT reduces OVP response latency by 2.5 s and lowers UV disable voltage by 0.3 V, enabling tighter discharge control; BQ296203DSGT matches OVP/delay/REG specs but uses incompatible pinout and UV programming, requiring layout changes despite functional similarity.
Availability
BQ296107DSGT is available at Aetrix Electronics and suitable for notebook PC battery packs, ultrabook power management systems, and medical portable device battery modules requiring stable component supply, long-lifecycle availability, and guaranteed traceable sourcing.
Supply support for BQ296107DSGT 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 specializing in analog and embedded processing technologies, with leadership in battery management, power conversion, and precision analog ICs.
The BQ296xxx family is designed specifically for second-level overvoltage protection in multi-cell Li-ion battery packs, integrating precision voltage monitoring, programmable delay timers, and regulated auxiliary supplies to simplify safety-critical battery system design.
FAQ
What is the factory-programmed overvoltage threshold for BQ296107DSGT?
The BQ296107DSGT has a factory-programmed overvoltage threshold of exactly 4.50 V, with ±10 mV accuracy at 25°C and ±54 mV drift over –40°C to +110°C. This value is laser-trimmed during production and cannot be adjusted externally - it is fixed for this specific orderable part number and verified in TI's production test flow.
Does BQ296107DSGT support 2-cell, 3-cell, and 4-cell battery configurations?
Yes, BQ296107DSGT supports 2-, 3-, and 4-series Li-ion configurations via its four independent cell sense inputs (V1–V4). For 2-cell use, V3 and V4 are shorted to V2; for 3-cell, V4 is shorted to V3. All configurations retain full OVP monitoring on each active cell and maintain the same 4.50 V threshold and 6.5 s delay behavior.
What is the function of the REG pin on BQ296107DSGT?
The REG pin on BQ296107DSGT delivers a factory-programmed 3.3 V regulated output capable of sourcing up to 2 mA. It powers always-on circuits like RTCs and automatically disables when any monitored cell voltage falls below the factory-set 2.8 V undervoltage threshold for 6 seconds - preventing excessive discharge during storage or fault conditions.
How does the OUT pin behave during overvoltage detection on BQ296107DSGT?
Upon detection of any cell exceeding 4.50 V, the BQ296107DSGT starts a fixed 6.5 s internal timer and then drives the OUT pin high (CMOS active-high) to a voltage ≥VDD – 0.3 V at 100 µA sink. This signal directly controls an external NMOS FET to short the fuse to ground, enabling battery or charger current to blow the fuse and isolate the pack.
What package type and dimensions does BQ296107DSGT use?
BQ296107DSGT uses an 8-pin WSON package with nominal body size 2.00 mm × 2.00 mm and 0.75 mm height. It features an exposed thermal pad that must be soldered to a VSS-connected copper area on the PCB for thermal performance and EMI reduction - no alternate packages are offered for this variant.
BQ296107DSGT 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)
BQ296107DSGT FAQ
1.How can I place an order for BQ296107DSGT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ296107DSGT 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 BQ296107DSGT reliable?
The price and inventory of BQ296107DSGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ296107DSGT is usually 5 days.
3.What payment methods are accepted for BQ296107DSGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ296107DSGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ296107DSGT?
BQ296107DSGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ296107DSGT 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 BQ296107DSGT?
For technical support, including BQ296107DSGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ296107DSGT requirements.
6.How does Aetrix verify that BQ296107DSGT is sourced from the original manufacturer or authorized distributors?
All BQ296107DSGT 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 BQ296107DSGT meets industry standards.
7.What is the process for return or replacement of BQ296107DSGT?
All BQ296107DSGT units undergo pre-shipment inspection (PSI). If there is an issue with BQ296107DSGT, 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 BQ296107DSGT part is unused and in its original packaging.
Return procedure for BQ296107DSGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ296107DSGT Tags
-
BQ29700DSER
Texas Instruments
-
S-8241ABKMC-GBKT2G
ABLIC Inc.
-
S-8241ABPMC-GBPT2G
ABLIC Inc.
-
BQ27427YZFR
Texas Instruments
-
BQ27426YZFR
Texas Instruments
-
STC3117IJT
STMicroelectronics
-
STC3115IJT
STMicroelectronics
-
BQ76925RGER
Texas Instruments
-
NPM1100-QDAA-R
Nordic Semiconductor ASA
-
BQ27441DRZR-G1A
Texas Instruments
-
STC3115AIQT
STMicroelectronics
-
S-8252AAL-M6T1U
ABLIC Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
