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Texas Instruments BQ7693006DBT
- Part No.:
- BQ7693006DBT
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 30-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
BQ7693006DBT.pdf
- Description:
- IC BATT MON MULTI 6-10C 30TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:311
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Product details
Overview
BQ7693006DBT 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 e-bike and power tool battery packs.
For engineers reviewing the BQ7693006DBT datasheet, BQ7693006DBT pinout, BQ7693006DBT application, or BQ7693006DBT equivalent, this device enables robust pack-level monitoring and protection without EEPROM programming, supports I²C communication with CRC option, and operates across –40°C to +85°C in high-voltage battery systems up to 36 V nominal.
Technical Context
The BQ7693006DBT implements a dedicated analog front-end architecture with separate 14-bit ADCs for cell voltage/temperature and a 16-bit coulomb counter for pack current. Its hierarchical sensing structure uses VC0–VC10 and VC5B pins to support up to 10-series cells with differential cell input capability (±9 V) and random cell connection tolerance.
Hardware protection logic executes independent OV/UV/OCD/SCD decisions using configurable delay timers and threshold registers, while integrated LDO (2.5 V or 3.3 V selectable via factory configuration) powers external circuitry. The device enters SHIP mode at <1.8 µA quiescent current, enabling ultra-low-power storage states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count Range | 6–10 series Li-ion/LiFePO₄ cells - supports 36-V nominal battery packs with scalable voltage monitoring. |
| Cell Voltage Accuracy | ±15 mV (25°C, 3.6–4.3 V range) - ensures precise state-of-charge estimation and tight protection thresholds. |
| ADC Resolution | 14-bit for cell voltage/temperature - provides 382 µV LSB resolution for high-fidelity voltage tracking. |
| Current Sensing | 16-bit coulomb counter with ±200 mV input range - enables accurate capacity tracking and discharge profiling. |
| Protection Response | OCD delay options: 8–1280 ms; SCD delay: 35–520 µs - allows tuning of fault reaction speed for system safety margins. |
| Quiescent Current | 130–195 µA (NORMAL mode, ADC+CC active) - balances measurement fidelity with power budget constraints. |
| Operating Temperature | –40°C to +85°C - validated for industrial and light electric vehicle environments. |
Pinout & Package
Package: 30-pin TSSOP (DBT), 7.80 mm × 4.40 mm × 1.20 mm body size, lead pitch 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC0–VC10 | Cell voltage sense inputs | Directly connect to cell stack nodes; VC0 = bottom cell negative, VC10 = top cell positive for 10S configuration. |
| VC5B | 6th cell negative reference | Provides local ground reference for upper 5-cell group; enables differential sensing across 10-cell stack. |
| SRP / SRN | Current sense differential inputs | Measure voltage drop across external sense resistor (RSNS); supports bidirectional current detection. |
| CHG / DSG | Low-side N-channel FET gate drivers | Drive external MOSFETs to enable/disable charging/discharging paths; output swing up to 14 V. |
| TS1 / TS2 | Thermistor bias and read inputs | Support two 103AT thermistors; internal 10 kΩ pull-up enables direct analog temperature measurement. |
| REGSRC / REGOUT | LDO input and regulated output | REGSRC accepts 6–25 V input; REGOUT delivers fixed 2.5 V (factory-configured for BQ7693006DBT). |
| SCL / SDA | I²C interface signals | Standard 3.3-V tolerant bus interface with optional CRC; supports host microcontroller communication at up to 400 kHz. |
| ALERT | Open-drain interrupt output | Asserts on protection events or status changes; double-function as override input during boot sequence. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated cell balancing FETs | 5 mA per-cell balancing current enables passive equalization without external components. |
| Hardware protection engine | Dedicated OV/UV/OCD/SCD comparators with programmable delays eliminate host MCU real-time processing load. |
| No EEPROM programming required | Factory-configured I²C address (0x18) and LDO voltage reduce BOM count and simplify firmware bring-up. |
| Random cell connection tolerance | Accepts non-sequential cell wiring order - simplifies PCB layout and improves manufacturing yield. |
| SHIP mode ultra-low power | 0.6–1.8 µA shutdown current extends shelf life and reduces parasitic drain in stored battery packs. |
Applications
| Electric Bikes | Power Tools |
|---|---|
|
Use Scenario: 36-V, 10S Li-ion battery pack for mid-drive e-bike with regenerative braking and thermal management. IC Role / Device Role / Timing Role: Primary AFE performing cell voltage monitoring, pack current integration, dual thermistor reading, and hardware-triggered discharge cutoff during overcurrent events. Use Value: Enables precise SOC estimation and fast (<105 µs) short-circuit response to protect motor controller MOSFETs and battery cells. |
Use Scenario: Cordless drill battery with high-pulse discharge capability and cycle-life optimization via cell balancing. IC Role / Device Role / Timing Role: Standalone protection and monitoring IC managing charge/discharge FETs, executing 5 mA per-cell balancing, and reporting telemetry via I²C to host MCU. Use Value: Extends usable runtime by maintaining voltage uniformity across 10 cells and preventing premature cutoff due to weak-cell voltage sag. |
| Battery Backup Units | Industrial Energy Storage |
|
Use Scenario: 36-V UPS module with runtime extension and cold-weather operation down to –20°C. IC Role / Device Role / Timing Role: Core monitoring device measuring die temperature, two external thermistors, and pack voltage to adjust charge parameters and prevent low-temp charging. Use Value: Prevents lithium plating by enforcing –40°C to +85°C operating limits and disabling charge below 0°C based on verified thermistor readings. |
Use Scenario: Rack-mounted 36-V ESS for telecom base stations requiring long-term reliability and remote diagnostics. IC Role / Device Role / Timing Role: Fault-tolerant AFE providing redundant voltage measurements, hardware-level overvoltage lockout, and alert-driven event logging via I²C. Use Value: Reduces field failure risk through autonomous protection that operates independently of host firmware execution integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor AFE applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ7693003DBT | Same package and pinout; factory-configured for 3.3-V REGOUT and I²C CRC enabled. | Requires host system to implement CRC checking; better suited for noise-prone industrial bus environments. | Select when deterministic error detection on I²C is mandatory and 3.3-V LDO output is needed for downstream logic. |
| MAX17853GCM+ | 14-bit ADC, 12S max, 3.3-V LDO, SPI interface, no integrated FET drivers. | Lacks CHG/DSG drivers and cell balancing FETs; requires external MOSFET gate drivers and balancing circuitry. | Choose when higher cell count (up to 12S) is required and SPI interface is preferred over I²C. |
Compared with BQ7693006DBT, BQ7693003DBT offers identical monitoring capability with enhanced bus robustness via CRC, while MAX17853GCM+ trades integrated drivers for extended cell support and SPI compatibility-neither is pin-compatible but both serve overlapping high-reliability battery pack roles.
Availability
BQ7693006DBT is available at Aetrix Electronics and suitable for electric bike battery packs, cordless power tools, and industrial energy storage systems requiring stable component supply, long-lifecycle support, and automotive-grade reliability validation.
Supply support for BQ7693006DBT 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 solutions.
The BQ769x0 product line targets high-power portable and industrial battery systems, delivering integrated analog front-ends that combine precision measurement, hardware protection, and low-power operation for Li-ion and LiFePO₄ chemistries.
FAQ
What is the factory-configured I²C address for BQ7693006DBT?
The BQ7693006DBT is preconfigured by Texas Instruments with a fixed 7-bit I²C address of 0x18. This address cannot be modified in the field, eliminating address conflict risks in multi-device systems and simplifying firmware initialization. The BQ7693006DBT datasheet confirms this value in the Device Comparison Table and specifies it as non-programmable.
Does BQ7693006DBT support thermistor-based temperature monitoring?
Yes, BQ7693006DBT supports two independent 103AT thermistors via TS1 and TS2 pins, each with internal 10 kΩ pull-up resistors. It measures thermistor voltage directly using its 14-bit ADC, enabling accurate temperature calculation across –40°C to +85°C. The BQ7693006DBT datasheet specifies RTS = 10 kΩ ±1.5% at 25°C and RTSDRIFT = ±0.3 kΩ over full temperature range.
What protection features are implemented in hardware on BQ7693006DBT?
BQ7693006DBT implements four hardware-based protections: Overvoltage (OV), Undervoltage (UV), Overcurrent in Discharge (OCD), and Short Circuit in Discharge (SCD). Each uses dedicated comparators with user-configurable thresholds and delay timers (e.g., OCD delay options from 8 ms to 1280 ms). These operate autonomously without host MCU intervention, ensuring fail-safe response even during firmware crashes.
Can BQ7693006DBT balance cells in a 10-series LiFePO₄ pack?
Yes, BQ7693006DBT integrates internal cell balancing FETs capable of 5 mA per-cell balancing current, supporting up to 10-series configurations. It performs passive balancing by dissipating excess energy from higher-voltage cells during charging cycles. The BQ7693006DBT datasheet confirms this capability applies to all members of the BQ76930 family, including the BQ7693006DBT variant.
What is the maximum absolute supply voltage rating for BQ7693006DBT?
The BQ7693006DBT has an absolute maximum BAT-to-VSS voltage rating of 36 V, consistent with its 6–10 series cell specification. Its internal architecture supports up to 108 V absolute maximum supply voltage only in specific configurations not applicable to the BQ7693006DBT variant - the 36-V limit is explicitly defined in Section 7.1 Absolute Maximum Ratings for BQ76930 devices.
BQ7693006DBT 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
BQ7693006DBT FAQ
1.How can I place an order for BQ7693006DBT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ7693006DBT 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 BQ7693006DBT reliable?
The price and inventory of BQ7693006DBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ7693006DBT is usually 5 days.
3.What payment methods are accepted for BQ7693006DBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ7693006DBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ7693006DBT?
BQ7693006DBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ7693006DBT 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 BQ7693006DBT?
For technical support, including BQ7693006DBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ7693006DBT requirements.
6.How does Aetrix verify that BQ7693006DBT is sourced from the original manufacturer or authorized distributors?
All BQ7693006DBT 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 BQ7693006DBT meets industry standards.
7.What is the process for return or replacement of BQ7693006DBT?
All BQ7693006DBT units undergo pre-shipment inspection (PSI). If there is an issue with BQ7693006DBT, 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 BQ7693006DBT part is unused and in its original packaging.
Return procedure for BQ7693006DBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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