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Texas Instruments BQ7693000DBT
- Part No.:
- BQ7693000DBT
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 30-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
BQ7693000DBT.pdf
- Description:
- IC BATT MON MULTI 6-10C 30TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:591
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Product details
Overview
BQ7693000DBT from Texas Instruments is a 6- to 10-series Li-ion and LiFePO₄ battery monitor AFE with integrated cell balancing FETs, low-side charge/discharge FET drivers, and dual thermistor support. It delivers ±15 mV cell voltage accuracy (25°C), 14-bit ADC resolution, and hardware-based overvoltage/undervoltage/overcurrent protection for 36-V nominal battery packs in power tools and e-scooters.
For engineers reviewing the BQ7693000DBT datasheet, BQ7693000DBT pinout, BQ7693000DBT application, or BQ7693000DBT equivalent, key selection criteria include its 30-pin TSSOP package, I²C interface with CRC option, 2.5-V LDO output, 5 mA per-cell balancing current, and support for up to three thermistors with dedicated VC5X/TS2 pins.
Technical Context
The BQ7693000DBT implements a multi-rail sensing architecture with segmented voltage domains (BAT–VC5X, VC5X–VSS) enabling safe monitoring of up to 10-series cells at ≤36 V total pack voltage. Its dual ADC subsystem independently measures cell voltages (14-bit, ±15 mV @ 25°C), die temperature, external thermistors, and pack current via coulomb counting (16-bit, ±200 mV input range).
Hardware protection logic executes autonomous OV/UV/OCD/SCD responses using programmable thresholds and delay timers - including 1/2/4/8 s OV delays and 35–520 µs SCD response windows - without host intervention. The device supports SHIP mode with 0.6–1.8 µA quiescent current and random cell connection tolerance for flexible PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count Range | 6 to 10 series Li-ion/LiFePO₄ cells (36-V nominal pack) |
| Cell Voltage Accuracy | ±15 mV at 25°C (3.2–4.6 V range); enables precise SOC estimation |
| ADC Resolution | 14-bit for cell voltage/temperature; 16-bit for coulomb counting |
| Cell Balancing Current | 5 mA per cell; internal FETs eliminate external balancing components |
| Protection Response | SCD detection in 35–520 µs; OCD in 8–1280 ms; autonomous FET control |
| Supply Current | 130–195 µA in NORMAL mode with ADC + coulomb counter active |
| LDO Output | 2.5-V regulated output (REGOUT); powers external microcontroller or sensors |
| Operating Temp | –40°C to +85°C; qualified for industrial and light EV environments |
Pinout & Package
The BQ7693000DBT uses a 30-pin TSSOP (DBT) package measuring 7.80 mm × 4.40 mm × 1.20 mm, optimized for high-voltage battery pack PCBs with thermal pad exposure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC0–VC10 | Cell voltage sense inputs | Direct connection to cell stack nodes; VC0 = 1st cell negative, VC10 = 10th cell positive |
| VC5X | Thermistor reference node | Provides ground reference for TS2 thermistor; enables dual-thermistor configuration |
| SRP/SRN | Current sense differential inputs | Measure pack current via shunt resistor; ±200 mV full-scale range |
| CHG/DSG | Low-side FET gate drivers | Drive external N-channel MOSFETs; 10–14 V output swing supports 12-V gate drive |
| SCL/SDA | I²C interface | Standard 3.3-V compatible bus; CRC option enhances communication reliability |
| ALERT | Open-drain interrupt output | Signals protection events or status changes to host MCU; configurable as override input |
| REGSRC/REGOUT | LDO input/output | Accepts 6–25 V input; delivers regulated 2.5 V for system peripherals |
| TS1/TS2 | Thermistor inputs | Support two 10-kΩ 103AT thermistors; independent biasing via VC5X and VSS |
Key Features
| Feature | Design Value |
|---|---|
| Integrated cell balancing FETs | Eliminates need for external balancing MOSFETs and drivers; reduces BOM count and layout area |
| Hardware-based protection engine | Autonomous OV/UV/OCD/SCD response without host CPU involvement; improves safety reaction time |
| Random cell connection tolerance | Allows non-sequential physical placement of cell sense wires; simplifies mechanical integration |
| SHIP mode ultra-low power | 0.6–1.8 µA shutdown current extends shelf life of stored battery packs |
| Dual thermistor support | Independent TS1 (VSS-referenced) and TS2 (VC5X-referenced) inputs enable top/bottom pack temperature monitoring |
Applications
| Power Tools | eScooters |
|---|---|
Use Scenario: Cordless drill/driver battery packs requiring real-time cell monitoring and fast-discharge protection. IC Role / Device Role / Timing Role: Primary AFE managing cell voltage, temperature, pack current, and FET control during high-current bursts (≥20 A). Use Value: 35–520 µs SCD response prevents MOSFET failure during motor stall; 5 mA balancing maintains capacity across 10-series Li-ion cells. | Use Scenario: 36-V battery systems in shared mobility e-scooters needing robust overvoltage and thermal fault handling. IC Role / Device Role / Timing Role: Central protection controller interfacing with MCU via I²C; triggers CHG/DSG FETs on UV/OV events. Use Value: Dual thermistor inputs (TS1 + TS2) enable differential thermal monitoring across battery length; 2.5-V REGOUT powers telemetry MCU. |
| Battery Backup Units | Industrial Energy Storage |
Use Scenario: Rack-mounted UPS modules requiring long-term cell health tracking and coulomb counting. IC Role / Device Role / Timing Role: Precision analog front-end performing 250-ms periodic cell voltage scans and 2-s temperature sampling. Use Value: ±15 mV cell voltage accuracy at 25°C ensures reliable SOC calculation over 500+ cycles; SHIP mode minimizes self-discharge. | Use Scenario: Stationary ESS cabinets with 36-V LiFePO₄ stacks demanding high-temperature operation. IC Role / Device Role / Timing Role: High-reliability monitor operating continuously at 85°C ambient; manages balancing during float charging. Use Value: –40°C to +85°C rating and ±35 mV cell voltage accuracy across full temp range ensure field stability; 108-V absolute max BAT rating accommodates transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor AFE applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ7694000DBT | Supports 9–15 series cells (48-V nominal); larger 44-pin TSSOP; higher cell count but same 5 mA balancing current | Required for ≥48-V packs (e.g., high-power e-bikes); not drop-in for 36-V designs due to pin count and domain mapping | Select BQ7694000DBT only when scaling to 12–15S configurations; verify VC10X/TS3 routing and thermal design. |
| MAX17853 | 14-bit ADC; 100 µA typical supply current; supports 14S; no integrated balancing FETs; requires external drivers | Used in automotive-grade modules where ASIL-B compliance and daisy-chain capability are mandatory | Choose MAX17853 for ISO 26262-compliant systems; accept added BOM cost for external balancing and isolation. |
Compared with BQ7693000DBT, BQ7694000DBT extends cell count but increases footprint and complexity, while MAX17853 trades integrated features for functional safety certification - making BQ7693000DBT optimal for cost-sensitive, high-volume 6–10S industrial packs.
Availability
BQ7693000DBT is available at Aetrix Electronics and suitable for power tools, e-scooters, and battery backup units requiring stable component supply, long-lifecycle support, and production-ready qualification.
Supply support for BQ7693000DBT 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 and embedded processing technologies, with decades of expertise in battery management ICs.
The BQ769x0 product line targets high-power portable and stationary energy storage systems, delivering integrated analog front-ends that reduce system-level complexity while maintaining precision and safety compliance.
FAQ
What is the maximum supported battery pack voltage for the BQ7693000DBT?
The BQ7693000DBT supports up to 36-V nominal battery packs (6–10 series Li-ion or LiFePO₄ cells). Its absolute maximum BAT-to-VSS rating is 36 V, and it tolerates transient overvoltages up to 108 V - ensuring robustness against load-dump events in power tool and e-scooter applications. This rating is confirmed in Section 7.1 Absolute Maximum Ratings of the official datasheet.
Does the BQ7693000DBT include built-in cell balancing circuitry?
Yes, the BQ7693000DBT integrates dedicated cell balancing FETs capable of delivering 5 mA per cell. These internal switches eliminate the need for external balancing MOSFETs and associated gate drivers, reducing bill-of-materials cost and PCB area. Balancing is controlled entirely by the device's register map and can be enabled per cell; this functionality is documented in Section 1 Features and Section 8.3 Feature Description of the BQ7693000DBT datasheet.
Can the BQ7693000DBT monitor more than one temperature sensor?
Yes, the BQ7693000DBT supports two independent thermistor inputs: TS1 referenced to VSS and TS2 referenced to VC5X. This allows simultaneous monitoring of top- and bottom-pack temperatures in 36-V battery assemblies. Each input is biased using internal 10-kΩ pull-up networks matched to 103AT thermistors, and both channels operate with 12.5-ms decimation time. Details are specified in Table 6-2 Pin Functions and Section 7.5 Electrical Characteristics.
What communication interface does the BQ7693000DBT use, and does it support error checking?
The BQ7693000DBT uses a standard I²C-compatible interface (SCL/SDA pins) with optional CRC error checking on all register reads and writes. The default 7-bit I²C address is 0x08, and CRC enables robust communication in electrically noisy battery pack environments. This feature is explicitly listed under "Additional features" in Section 1 and detailed in Section 8.5 Register Maps of the datasheet.
How does the BQ7693000DBT handle short-circuit detection during discharge?
The BQ7693000DBT detects short circuits in discharge (SCD) by monitoring the SRP–SRN differential voltage. It offers programmable thresholds from 22–200 mV and ultra-fast response windows of 35–520 µs - significantly faster than overcurrent detection. Upon SCD trigger, it immediately disables the DSG FET driver to protect MOSFETs and wiring. This autonomous hardware protection is detailed in Section 1 Features and Section 7.5 Electrical Characteristics (SCDRANGE, SCDDELAY).
BQ7693000DBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 30-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- 6 ~ 10
- Fault Protection:
- Over Current, Over/Under Voltage, Short Circuit
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 30-TSSOP
BQ7693000DBT FAQ
1.How can I place an order for BQ7693000DBT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ7693000DBT 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 BQ7693000DBT reliable?
The price and inventory of BQ7693000DBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ7693000DBT is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ7693000DBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ7693000DBT?
BQ7693000DBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ7693000DBT 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 BQ7693000DBT?
For technical support, including BQ7693000DBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ7693000DBT requirements.
6.How does Aetrix verify that BQ7693000DBT is sourced from the original manufacturer or authorized distributors?
All BQ7693000DBT 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 BQ7693000DBT meets industry standards.
7.What is the process for return or replacement of BQ7693000DBT?
All BQ7693000DBT units undergo pre-shipment inspection (PSI). If there is an issue with BQ7693000DBT, 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 BQ7693000DBT part is unused and in its original packaging.
Return procedure for BQ7693000DBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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