Overview
The BQ771807DPJR is a part of the BQ7718xy family of products from Texas Instruments, designed to provide overvoltage monitoring and protection for lithium-ion (Li-Ion) battery pack systems. This device is capable of monitoring 2-series to 5-series cell configurations, ensuring high-accuracy overvoltage protection with a fixed OVP threshold. It features an internal delay timer and low power consumption, making it suitable for various battery-powered applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range (VDD - VSS) | -0.3 | 30 | V | |
| Input Voltage Range (Vx - VSS) | -0.3 | 30 | V | |
| Output Voltage Range (OUT - VSS) | -0.3 | 30 | V | |
| Operating Ambient Temperature Range | -40 | 110 | °C | |
| Voltage Protection Threshold (VOV) | 4.275 | V | ||
| Delay Timer (tDELAY) | 2.4 | 3 | 3.6 | s |
| Power Consumption (ICC) | ~1 | µA | ||
| Leakage Current per Cell Input | < 100 | nA | ||
| Package Type | WSON DPJ | |||
| Package Size | 3.00 mm × 4.00 mm |
Key Features
- Overvoltage protection for 2-series to 5-series Li-Ion battery cells
- Internal delay timer with configurable delay times
- Fixed OVP threshold with high accuracy (±10 mV)
- Low power consumption (ICC ≈ 1 µA when VCELL(ALL) < VPROTECT)
- Low leakage current per cell input (< 100 nA)
- Functional Safety-Capable with documentation available for system design
- Customer Test Mode (CTM) for quicker production-line testing
- Available in small 8-pin QFN and MSOP packages
Applications
- Protection for Li-Ion battery packs in handheld garden tools
- Protection for Li-Ion battery packs in handheld power tools
- Protection for Li-Ion battery packs 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 BQ771807DPJR?
The primary function is to provide overvoltage monitoring and protection for Li-Ion battery pack systems.
- What is the voltage protection threshold for the BQ771807DPJR?
The voltage protection threshold (VOV) is 4.275 V.
- What are the package options available for the BQ771807DPJR?
The device is available in a small 8-pin WSON (DPJ) package and an 8-pin MSOP (DGK) package.
- What is the operating ambient temperature range for the BQ771807DPJR?
The operating ambient temperature range is -40°C to 110°C.
- Does the BQ771807DPJR support functional safety?
Yes, it is Functional Safety-Capable with documentation available to aid in system design.
- What is the typical power consumption of the BQ771807DPJR?
The typical power consumption is approximately 1 µA when VCELL(ALL) < VPROTECT.
- What is the leakage current per cell input for the BQ771807DPJR?
The leakage current per cell input is less than 100 nA.
- Does the BQ771807DPJR have a Customer Test Mode?
Yes, it has a Customer Test Mode (CTM) for quicker production-line testing with a greatly reduced delay time.
- What are some common applications of the BQ771807DPJR?
Common applications include protection for Li-Ion battery packs in handheld tools, cordless vacuum cleaners, UPS battery backup systems, and light electric vehicles.
- What is the delay timer range for the BQ771807DPJR?
The delay timer range is 2.4 to 3.6 seconds.
