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Texas Instruments BQ7693002DBT
- Part No.:
- BQ7693002DBT
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 30-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
BQ7693002DBT.pdf
- Description:
- IC BATT MON MULTI 6-10C 30TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:326
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Product details
Overview
BQ7693002DBT from Texas Instruments is a 6- to 10-series Li-ion and LiFePO₄ battery monitor AFE with integrated charge/discharge FET drivers, 14-bit cell voltage ADC (±15 mV accuracy at 25°C), coulomb counting current measurement (±2 LSB INL), and hardware-based overvoltage/undervoltage/overcurrent protection. It supports e-bike battery packs requiring precise per-cell monitoring and autonomous fault response.
For engineers reviewing the BQ7693002DBT datasheet, BQ7693002DBT pinout, BQ7693002DBT application, or BQ7693002DBT equivalent, this device delivers deterministic protection timing (1–8 s OV delay), 3.3-V LDO output, I²C interface with optional CRC, and random cell connection tolerance-critical for high-reliability industrial pack designs.
Technical Context
The BQ7693002DBT implements a dedicated analog front-end with dual independent ADCs: one for 14-bit cell voltage and die/thermistor temperature sensing (250 ms update interval), another for 16-bit coulomb counting across SRP/SRN (250 ms conversion time). Its protection logic executes in hardware without host intervention, supporting configurable OV/UV thresholds (16-LSB step size) and OCD/SCD detection with programmable delays.
It operates across –40°C to +85°C with ultra-low quiescent current: 40–195 µA in NORMAL mode (depending on ADC/CC enable state) and 0.6–1.8 µA in SHIP mode. The 30-pin TSSOP package integrates balancing FETs (5 mA per cell), 2.5-V/3.3-V selectable LDO (REGOUT), and direct low-side N-channel FET drivers (CHG/DSG) with 10–14 V turn-on capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count Range | 6 to 10 series Li-ion/LiFePO₄ cells - supports 36-V nominal battery packs with scalable voltage monitoring architecture. |
| Cell Voltage ADC | 14-bit resolution, ±15 mV accuracy (3.2–4.6 V range, 25°C) - enables precise state-of-charge estimation and cell imbalance detection. |
| Coulomb Counter | 16-bit, ±2 LSB integral nonlinearity, 8.44 µV LSB - provides high-fidelity pack current integration for accurate capacity tracking. |
| Protection Response | Hardware-based OV/UV/OCD/SCD with 1–8 s configurable delay - eliminates software latency for safety-critical shutdown events. |
| LDO Output | 3.3-V regulated output (REGOUT), 4.7 µF load capacitance supported - powers external microcontrollers or sensors without secondary regulators. |
| Quiescent Current | 40 µA (ADC/CC off), 195 µA (ADC/CC on), 0.6 µA (SHIP mode) - extends shelf life and enables long-term storage of powered-down battery systems. |
| Operating Temp | –40°C to +85°C - validated for use in power tools, e-scooters, and energy storage systems exposed to ambient thermal stress. |
Pinout & Package
30-pin TSSOP (DBT) package, 7.80 mm × 4.40 mm × 1.20 mm body size, lead pitch 0.65 mm. RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC0–VC10 | Cell voltage sense inputs | Direct connection to cell stack nodes; VC0 = bottom cell negative, VC10 = top cell positive; supports random cell wiring topology. |
| SRP / SRN | Current sense differential inputs | Measures pack current via external sense resistor; accepts ±200 mV input range for coulomb counting and OCD/SCD detection. |
| CHG / DSG | Low-side N-FET gate drivers | Drive external N-channel MOSFETs; output swing 10–14 V (REGSRC ≥12 V) with 250 µs rise time - enables robust FET control under load. |
| SCL / SDA | I²C interface pins | Standard 3.3-V I²C bus (up to 400 kHz), with optional CRC validation - allows host MCU to read registers and configure protections without custom protocol. |
| ALERT | Open-drain interrupt output | Asserts on protection event or register flag; also accepts override input - enables wake-up signaling and manual reset coordination with host system. |
| REGSRC / REGOUT | LDO input and output | REGSRC accepts 6–25 V input; REGOUT delivers regulated 3.3 V (configurable variant) - powers auxiliary circuitry while decoupling from noisy battery rail. |
| TS1 / TS2 | Thermistor bias inputs | Support two 10-kΩ 103AT thermistors with internal pull-up; referenced to VSS (TS1) or VC5X (TS2) - enables dual-point thermal monitoring of pack and module zones. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated cell balancing FETs | 5 mA per cell balancing current - actively equalizes voltage drift without external components, reducing pack degradation over cycles. |
| Hardware protection engine | Dedicated logic for OV/UV/OCD/SCD with fixed-latency response - eliminates firmware dependency for ASIL-B–level safety functions in e-mobility applications. |
| Random cell connection tolerance | No requirement for sequential cell wiring order - simplifies PCB layout and mechanical assembly for multi-cell packs with complex interconnect routing. |
| I²C with CRC option | Configurable 7-bit address (0x08 default), optional packet-level CRC - ensures data integrity during telemetry reads in electrically noisy vehicle environments. |
| Ultra-low-power SHIP mode | 0.6 µA supply current with boot-detect active - preserves battery charge during storage while retaining ability to wake on button press or voltage threshold. |
Applications
| e-Bikes & Pedelecs | Power Tools |
|---|---|
|
Use Scenario: 36-V, 10S lithium battery pack powering mid-drive motor with regenerative braking and torque-sensing assist. IC Role / Device Role / Timing Role: Primary AFE performing real-time cell voltage monitoring, pack current integration, and autonomous discharge cutoff during overcurrent events. Use Value: Enables 500+ cycle life through precise per-cell balancing and prevents thermal runaway via sub-100 µs SCD response. |
Use Scenario: Cordless drill/driver with 10S Li-ion pack delivering burst currents >30 A during stall conditions. IC Role / Device Role / Timing Role: Hardware-based overcurrent protector triggering DSG FET disable within 1280 ms (OCD) or 520 µs (SCD) - no MCU involvement required. Use Value: Eliminates need for external current-sense amplifiers and protection ICs, reducing BOM count by 3–4 components. |
| Energy Storage Systems | Uninterruptible Power Supplies |
|
Use Scenario: Residential 36-V, 10S LiFePO₄ battery bank with 200+ Ah capacity, integrated into solar hybrid inverter. IC Role / Device Role / Timing Role: Pack supervisor handling voltage/current/temperature telemetry, state-of-health calculation, and grid-disconnect coordination. Use Value: Supports 15-year field deployment with <1.5% annual capacity loss due to calibrated 14-bit ADC and factory-trimmed reference. |
Use Scenario: Rack-mounted 36-V UPS for telecom base stations requiring fail-safe shutdown during AC loss and deep discharge. IC Role / Device Role / Timing Role: Critical protection controller asserting ALERT and disabling DSG upon UV detection (programmable 1–16 s delay). Use Value: Guarantees clean, controlled shutdown before cell reversal - preventing irreversible damage to LiFePO₄ chemistry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery monitor AFE applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ7693000DBT | 2.5-V LDO output; identical pinout and protection features | Used where host MCU or sensor requires 2.5-V supply instead of 3.3 V | Select when system power architecture mandates 2.5-V rail; otherwise BQ7693002DBT preferred for broader compatibility. |
| BQ7694002DBT | Supports 9–15S cells; larger 44-pin TSSOP package; higher absolute max voltage (108 V) | Required for 48-V and 60-V battery systems (e.g., light EVs, industrial AGVs) | Choose only when >10S configuration is needed; not drop-in compatible due to pin count and cell sense architecture differences. |
Compared with BQ7693000DBT, the BQ7693002DBT offers a 3.3-V LDO better aligned with modern 3.3-V MCUs and sensors, while BQ7694002DBT extends voltage range and cell count but requires PCB redesign - making BQ7693002DBT optimal for cost-sensitive 36-V industrial and mobility applications.
Availability
BQ7693002DBT is available at Aetrix Electronics and suitable for e-bike battery management, power tool pack protection, and energy storage system monitoring requiring stable component supply, long-lifecycle support, and automotive-grade reliability.
Supply support for BQ7693002DBT 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 and power electronics.
The BQ769x0 product line targets high-power, multi-cell lithium battery systems - designed specifically for light electric vehicles, cordless power equipment, and stationary energy storage where autonomous hardware protection and precision telemetry are mandatory.
FAQ
What is the maximum number of series cells supported by the BQ7693002DBT?
The BQ7693002DBT supports up to 10 series-connected cells, covering nominal 36-V battery configurations for e-bikes, power tools, and UPS systems. It monitors individual cell voltages via dedicated VC0–VC10 pins and tolerates random cell connection order, simplifying physical pack integration. This differs from the BQ7694002DBT, which supports up to 15 cells for 48-V+ applications.
Does the BQ7693002DBT include an integrated LDO regulator?
Yes, the BQ7693002DBT includes an integrated 3.3-V LDO regulator (REGOUT) powered from the REGSRC input. It delivers up to 150 mA and supports 4.7 µF output capacitance, enabling direct power delivery to host microcontrollers or external sensors without discrete regulators. This LDO is factory-configured and cannot be reprogrammed.
How does the BQ7693002DBT handle overcurrent protection?
The BQ7693002DBT implements hardware-based overcurrent protection using differential inputs SRP and SRN to measure voltage across a sense resistor. It supports configurable OCD thresholds (8–100 mV) and delays (8–1280 ms), plus faster short-circuit detection (22–200 mV, 35–520 µs delay). Upon trigger, it asserts ALERT and disables the DSG FET driver autonomously - no host MCU intervention required.
Can the BQ7693002DBT perform cell balancing, and what is its balancing current capability?
Yes, the BQ7693002DBT integrates internal cell balancing FETs capable of 5 mA per cell. Balancing is controlled via register writes and occurs during normal operation or sleep modes. The 5 mA limit is optimized for passive balancing in 6–10S packs, minimizing heat generation while correcting voltage drift over multiple charge cycles - sufficient for LiFePO₄ and standard Li-ion chemistries.
Is the BQ7693002DBT compatible with I²C communication, and does it support error checking?
Yes, the BQ7693002DBT uses a standard I²C interface (SCL/SDA pins) operating at up to 400 kHz. It supports optional CRC-8 checksum validation on all register read/write transactions, enhancing data integrity in electrically noisy environments such as e-bikes and power tools. The default 7-bit I²C address is 0x08, and address configuration is factory-programmed and immutable.
BQ7693002DBT 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
BQ7693002DBT FAQ
1.How can I place an order for BQ7693002DBT through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ7693002DBT 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 BQ7693002DBT reliable?
The price and inventory of BQ7693002DBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ7693002DBT is usually 5 days.
3.What payment methods are accepted for BQ7693002DBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ7693002DBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ7693002DBT?
BQ7693002DBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ7693002DBT 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 BQ7693002DBT?
For technical support, including BQ7693002DBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ7693002DBT requirements.
6.How does Aetrix verify that BQ7693002DBT is sourced from the original manufacturer or authorized distributors?
All BQ7693002DBT 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 BQ7693002DBT meets industry standards.
7.What is the process for return or replacement of BQ7693002DBT?
All BQ7693002DBT units undergo pre-shipment inspection (PSI). If there is an issue with BQ7693002DBT, 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 BQ7693002DBT part is unused and in its original packaging.
Return procedure for BQ7693002DBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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