Overview
The Texas Instruments BQ7694202PFBR is a highly integrated, high-accuracy battery monitor and protector designed for 3-series to 10-series Li-ion, Li-polymer, and LiFePO4 battery packs. This device is part of the BQ76942 family and is optimized for real-time monitoring and management of multi-cell battery packs. It features a high-accuracy monitoring system, a highly configurable protection subsystem, and support for autonomous or host-controlled cell balancing. The BQ7694202PFBR is available in a 48-pin TQFP package and is suitable for various applications requiring precise battery management, such as electric vehicles, portable energy storage systems, and uninterruptible power supplies.
Key Specifications
| Specification | Description |
|---|---|
| Package Type | 48-pin TQFP (PFB) |
| Package Size | 7 mm × 7 mm |
| Operating Temperature Range | -40°C to 85°C |
| Cell Support | 3-series to 10-series Li-ion, Li-polymer, and LiFePO4 |
| Communication Interfaces | 400-kHz I2C, SPI, and HDQ one-wire interface |
| Integrated Features | High-side charge-pump NFET drivers, dual programmable LDOs, internal temperature sensor, and up to nine external thermistors |
| Memory | One-time-programmable (OTP) memory |
| Power Consumption | Low quiescent current for energy efficiency |
Key Features
- High-accuracy monitoring system for voltage, current, and temperature.
- Highly configurable protection subsystem for overcharge, over-discharge, and short-circuit protection.
- Support for autonomous or host-controlled cell balancing.
- Integrated high-side charge-pump NFET drivers.
- Dual programmable LDOs for external system usage.
- Support for temperature sensing using an internal sensor and up to nine external thermistors.
- One-time-programmable (OTP) memory for customer-specific configurations.
- Communication options include 400-kHz I2C, SPI, and HDQ one-wire interface.
- Low quiescent current for energy efficiency.
Applications
- Cordless power tools and garden tools.
- Vacuum cleaners.
- E-bike, e-scooter, and Light Electric Vehicles (LEVs).
- Non-military drones.
- Other industrial battery packs (3-series–10-series).
- Electric vehicles.
- Portable energy storage systems.
- Uninterruptible power supplies.
Q & A
- What is the BQ7694202PFBR used for?
The BQ7694202PFBR is used for real-time monitoring and management of multi-cell battery packs, particularly for 3-series to 10-series Li-ion, Li-polymer, and LiFePO4 batteries.
- What package type and size does the BQ7694202PFBR come in?
The BQ7694202PFBR is available in a 48-pin TQFP package with a size of 7 mm × 7 mm.
- What are the communication interfaces supported by the BQ7694202PFBR?
The device supports 400-kHz I2C, SPI, and HDQ one-wire interface.
- Does the BQ7694202PFBR support temperature sensing?
Yes, it supports temperature sensing using an internal sensor and up to nine external thermistors.
- What type of memory does the BQ7694202PFBR have?
The device has one-time-programmable (OTP) memory for customer-specific configurations.
- What are some of the key applications of the BQ7694202PFBR?
Key applications include cordless power tools, e-bikes, e-scooters, non-military drones, and other industrial battery packs.
- How does the BQ7694202PFBR contribute to energy efficiency?
The device consumes low quiescent current, which helps extend the runtime of the battery pack.
- What is the operating temperature range of the BQ7694202PFBR?
The operating temperature range is -40°C to 85°C.
- Does the BQ7694202PFBR support cell balancing?
Yes, it supports autonomous or host-controlled cell balancing.
- What protection features does the BQ7694202PFBR offer?
The device offers protection against overcharge, over-discharge, and short-circuit.
