Overview
The BQ771823DPJR, produced by Texas Instruments, is a member of the BQ7718xy family of overvoltage protection devices designed for lithium-ion (Li-Ion) battery pack systems. This device is engineered to monitor and protect 2-series to 5-series cell Li-Ion batteries from overvoltage conditions. Each cell is independently monitored, ensuring robust protection against potential overvoltage threats. The BQ7718xy family includes features such as an internal delay timer, high-accuracy overvoltage protection, and low power consumption, making it an ideal solution for various battery-powered applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | -0.3 to 30 | V |
| Input Voltage Range | -0.3 to 30 | V |
| Output Voltage Range | -0.3 to 30 | V |
| Operating Temperature Range | -40 to 110 | °C |
| Storage Temperature Range | -65 to 150 | °C |
| Number of Cells Supported | 2 to 5 | |
| Overvoltage Protection Threshold Accuracy | ± 10 mV | |
| Power Consumption (ICC) | ≈ 1 µA (VCELL(ALL) < VPROTECT) | |
| Leakage Current per Cell Input | < 100 nA | |
| Package Type | 8-WDFN Exposed Pad, 8-pin QFN (3.00 mm × 4.00 mm), 8-pin MSOP (3.00 mm × 5.00 mm, including leads) |
Key Features
- Overvoltage protection for 2-series to 5-series cell Li-Ion batteries
- Internal delay timer
- Fixed OVP threshold
- High-accuracy overvoltage protection: ± 10 mV
- Low power consumption (ICC ≈ 1 µA when VCELL(ALL) < VPROTECT)
- Low leakage current per cell input (< 100 nA)
- Functional Safety-Capable
- Customer Test Mode (CTM) for quicker production-line testing
- Package footprint options: 8-pin QFN (3.00 mm × 4.00 mm), 8-pin MSOP (3.00 mm × 5.00 mm, including leads)
Applications
- Protection for Li-Ion battery packs used in handheld garden tools
- Protection for Li-Ion battery packs used in handheld power tools
- Protection for Li-Ion battery packs used in cordless vacuum cleaners
- UPS battery backup systems
- Light electric vehicles (eBike, eScooter, pedal assist bicycles)
Q & A
- What is the primary function of the BQ771823DPJR?
The primary function of the BQ771823DPJR is to provide overvoltage protection for 2-series to 5-series cell Li-Ion battery packs.
- What is the accuracy of the overvoltage protection threshold?
The overvoltage protection threshold accuracy is ± 10 mV.
- What is the power consumption of the BQ771823DPJR when the cell voltage is below the protection threshold?
The power consumption is approximately 1 µA when VCELL(ALL) < VPROTECT.
- What types of packages are available for the BQ771823DPJR?
The device is available in 8-pin QFN (3.00 mm × 4.00 mm) and 8-pin MSOP (3.00 mm × 5.00 mm, including leads) packages.
- What is the operating temperature range of the BQ771823DPJR?
The operating temperature range is -40°C to 110°C.
- Is the BQ771823DPJR compliant with RoHS regulations?
- What is the Customer Test Mode (CTM) used for?
The Customer Test Mode (CTM) is used for quicker production-line testing with greatly reduced delay time.
- What types of applications can the BQ771823DPJR be used in?
The device can be used in applications such as handheld garden tools, handheld power tools, cordless vacuum cleaners, UPS battery backup systems, and light electric vehicles.
- What is the storage temperature range for the BQ771823DPJR?
The storage temperature range is -65°C to 150°C.
- Does the BQ771823DPJR support functional safety?
