Overview
The BQ7694003DBT is a sophisticated battery management integrated circuit (IC) designed and manufactured by Texas Instruments. This component is part of the BQ769x0 family, which is tailored for monitoring and managing lithium-ion (Li-Ion) and lithium iron phosphate (Li-FePO4) battery packs. The BQ7694003DBT is particularly suited for applications requiring the monitoring of 9 to 15 series-connected cells, making it an ideal choice for various battery-powered systems.
Key Specifications
| Specification | Details |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | BQ7694003DBT |
| Category | Integrated Circuits (ICs) - PMIC - Battery Management |
| Package | 44-TFSOP (0.173", 4.40mm Width) |
| Function | Battery Monitor |
| Battery Chemistry | Multi-Chemistry (Li-Ion, Li-FePO4) |
| Number of Cells | 9 ~ 15 |
| Fault Protection | Over Current, Over/Under Voltage, Short Circuit |
| Interface | I2C |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Supply Voltage | 6...25V DC |
Key Features
- AFE Monitoring Features: Includes a pure digital interface and internal ADCs to measure cell voltage, die temperature, and external thermistor. It also measures pack current via a coulomb counter and supports up to three thermistors.
- Hardware Protection Features: Offers overcurrent in discharge (OCD), short circuit in discharge (SCD), overvoltage (OV), undervoltage (UV), and secondary protector fault detection.
- Integrated Cell Balancing FETs: Includes charge and discharge low-side NCH FET drivers and an alert interrupt to the host microcontroller.
- Voltage Regulator: Features a 2.5-V or 3.3-V output voltage regulator.
- No EEPROM Programming Necessary: Settings are preconfigured and stored in EEPROM, eliminating the need for additional programming.
Applications
The BQ7694003DBT is designed for use in a variety of battery-powered systems, including but not limited to:
- Electric Vehicles (EVs): For monitoring and managing high-voltage battery packs in electric vehicles.
- Energy Storage Systems (ESS): Suitable for battery management in grid-scale energy storage applications.
- Industrial Power Tools: Ideal for managing battery packs in high-performance power tools.
- Renewable Energy Systems: Can be used in solar and wind power systems to manage battery storage.
Q & A
- What is the BQ7694003DBT used for? The BQ7694003DBT is a battery management IC used for monitoring and managing lithium-ion and lithium iron phosphate battery packs.
- How many cells can the BQ7694003DBT monitor? It can monitor 9 to 15 series-connected cells.
- What type of interface does the BQ7694003DBT use? The BQ7694003DBT uses an I2C interface for communication with the host controller.
- What are the operating temperature ranges for the BQ7694003DBT? The operating temperature range is -40°C to 85°C.
- Does the BQ7694003DBT require EEPROM programming? No, the settings are preconfigured and stored in EEPROM, so no additional programming is necessary.
- What types of fault protection does the BQ7694003DBT offer? It offers overcurrent, over/under voltage, and short circuit protection.
- What is the package type of the BQ7694003DBT? The package type is 44-TFSOP (0.173", 4.40mm Width).
- Can the BQ7694003DBT support multiple thermistors? Yes, it can support up to three thermistors.
- What is the supply voltage range for the BQ7694003DBT? The supply voltage range is 6...25V DC.
- Does the BQ7694003DBT have integrated cell balancing FETs? Yes, it includes integrated cell balancing FETs and charge/discharge low-side NCH FET drivers.
