BQ771800DPJT - English Editing Encyclopedia Entry

Product Overview

Category

BQ771800DPJT belongs to the category of integrated circuits (ICs).

Use

This product is primarily used for battery management in electronic devices.

Characteristics

• BQ771800DPJT is a highly efficient and compact IC designed for battery protection and monitoring.
• It offers advanced features such as overvoltage protection, undervoltage protection, and overcurrent protection.
• The IC also includes a built-in temperature sensor for accurate thermal monitoring.
• It is compatible with various battery chemistries, including lithium-ion, lithium-polymer, and nickel-metal hydride.

Package

BQ771800DPJT comes in a small form factor package, making it suitable for space-constrained applications.

Essence

The essence of BQ771800DPJT lies in its ability to ensure safe and reliable operation of batteries by providing comprehensive protection and monitoring capabilities.

Packaging/Quantity

This product is typically available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 2.5V to 4.8V
• Operating Temperature Range: -40°C to +85°C
• Overvoltage Protection Threshold: Adjustable from 3.6V to 4.5V
• Undervoltage Protection Threshold: Adjustable from 2.0V to 3.0V
• Overcurrent Protection Threshold: Adjustable from 1A to 10A

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground reference
3. BAT: Battery connection
4. OUT: Output for external load
5. SDA: Serial data input/output
6. SCL: Serial clock input
7. TS: Temperature sense input
8. INT: Interrupt output

Functional Features

• Overvoltage protection: Monitors battery voltage and disconnects the load when it exceeds the set threshold.
• Undervoltage protection: Cuts off the load when the battery voltage falls below the specified threshold.
• Overcurrent protection: Safeguards against excessive current flow, preventing damage to the battery and connected devices.
• Temperature monitoring: Provides accurate temperature measurements for thermal management.
• Serial communication: Supports I2C interface for configuration and data exchange.

Advantages and Disadvantages

Advantages

• Comprehensive battery protection and monitoring capabilities.
• Compact form factor suitable for space-constrained applications.
• Wide input voltage range allows compatibility with various power sources.
• Adjustable protection thresholds provide flexibility for different battery chemistries and system requirements.

Disadvantages

• Limited maximum overcurrent protection threshold (10A).
• Requires external microcontroller or host device for configuration and control.

Working Principles

BQ771800DPJT operates by continuously monitoring the battery voltage, current, and temperature. It compares these values with the user-defined thresholds to determine if any protection action is required. When a fault condition is detected, such as overvoltage, undervoltage, or overcurrent, the IC triggers the appropriate protection mechanism to safeguard the battery and connected devices.

Detailed Application Field Plans

BQ771800DPJT finds applications in various fields, including: 1. Portable electronic devices: Ensures safe battery operation in smartphones, tablets, and wearable devices. 2. Electric vehicles: Protects the battery pack from voltage spikes and abnormal current conditions. 3. Power tools: Prevents damage to batteries and tools due to overvoltage or overcurrent situations. 4. Energy storage systems: Monitors and protects battery banks used in renewable energy storage applications.

Detailed and Complete Alternative Models

1. BQ771801DPJT: Similar to BQ771800DPJT, but with additional features for enhanced battery management.
2. BQ771802DPJT: A higher current variant of BQ771800DPJT, suitable for applications requiring greater power handling capabilities.
3. BQ771803DPJT: Designed specifically for automotive battery management, offering extended temperature range and automotive-grade reliability.

Note: The above alternative models are provided as examples and may not represent an exhaustive list.

In conclusion, BQ771800DPJT is a versatile integrated circuit that provides comprehensive battery protection and monitoring capabilities. Its compact size, wide compatibility, and adjustable thresholds make it suitable for various applications in the electronics industry.