Overview
The BQ7693003DBT, produced by Texas Instruments, is part of the BQ769x0 family of robust analog front-end (AFE) devices. This component is designed to serve as part of a complete pack monitoring and protection solution for high-power systems, including light electric vehicles, power tools, and uninterruptible power supplies. The BQ76930 specifically supports up to 10-series cells or typical 36-V packs and manages various battery chemistries such as Li-ion, Li-iron phosphate, and more. It is engineered with low power consumption in mind, allowing sub-blocks within the IC to be enabled or disabled and featuring a SHIP mode for ultra-low power states.
Key Specifications
| Parameter | Description |
|---|---|
| Package | TSSOP (DBT) with 30 pins |
| Operating Temperature Range | -40°C to 85°C |
| Supply Voltage Range | 6 V to 25 V |
| Battery Chemistry | Li-ion, Li-iron phosphate (LiFePO4) |
| Number of Series Cells Supported | Up to 10 series cells |
| Mounting Type | Surface Mount |
| Package Type | 30-TSSOP (0.173", 4.40mm Width) |
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
Key Features
- AFE monitoring features with a pure digital interface
- Internal ADC measures cell voltage, die temperature, and external thermistor
- A separate, internal ADC measures pack current (coulomb counter)
- Directly supports up to three thermistors (103AT)
- Hardware protection features:
- Overcurrent in Discharge (OCD)
- Short Circuit in Discharge (SCD)
- Overvoltage (OV)
- Undervoltage (UV)
- Secondary protector fault detection
- Integrated cell balancing FETs
- Charge and discharge low-side NCH FET drivers
- Alert interrupt to host microcontroller
- 2.5-V or 3.3-V output voltage regulator
- No EEPROM programming necessary
- High supply voltage absolute maximum (up to 108 V)
- Simple I2C compatible interface (CRC option)
- Random cell connection tolerant
Applications
The BQ7693003DBT is suitable for various high-power applications, including:
- Light electric vehicles
- Power tools
- Uninterruptible power supplies (UPS)
- Battery packs requiring monitoring, protection, and balancing functions
Q & A
- What is the BQ7693003DBT used for?
The BQ7693003DBT is used as part of a complete pack monitoring and protection solution for high-power battery systems.
- How many series cells does the BQ76930 support?
The BQ76930 supports up to 10 series cells or typical 36-V packs.
- What battery chemistries are supported by the BQ76930?
The BQ76930 supports Li-ion, Li-iron phosphate (LiFePO4), and other battery chemistries.
- What are the key protection features of the BQ76930?
The key protection features include Overcurrent in Discharge (OCD), Short Circuit in Discharge (SCD), Overvoltage (OV), Undervoltage (UV), and secondary protector fault detection.
- Does the BQ76930 require EEPROM programming?
No, the BQ76930 does not require EEPROM programming.
- What is the operating temperature range of the BQ76930?
The operating temperature range is -40°C to 85°C.
- What interface does the BQ76930 use for communication?
The BQ76930 uses a simple I2C compatible interface with a CRC option.
- Can the BQ76930 be put into an ultra-low power state?
Yes, the BQ76930 can be put into an ultra-low power state using the SHIP mode.
- What is the maximum supply voltage for the BQ76930?
The maximum supply voltage is up to 108 V.
- Does the BQ76930 support multiple thermistors?
Yes, the BQ76930 directly supports up to three thermistors (103AT).
