BQ29330DBT - English Editing Encyclopedia Entry

Product Overview

Category

BQ29330DBT belongs to the category of integrated circuits (ICs) specifically designed for battery protection.

Use

This product is primarily used for protecting lithium-ion and lithium-polymer batteries from overcharging, over-discharging, and short-circuiting. It ensures the safe and efficient operation of battery-powered devices.

Characteristics

• Battery protection IC with advanced features
• High accuracy voltage and current monitoring
• Overvoltage, undervoltage, and overcurrent protection
• Short-circuit detection and response
• Low power consumption
• Compact size for easy integration into various applications

Package and Quantity

The BQ29330DBT comes in a small outline transistor (SOT) package. Each package contains one unit of the IC.

Specifications

• Operating Voltage Range: 2.5V to 16V
• Overvoltage Protection Threshold: Adjustable from 2.5V to 4.8V
• Undervoltage Protection Threshold: Adjustable from 1.8V to 3.9V
• Overcurrent Detection Threshold: Adjustable from 10mV to 80mV
• Short-Circuit Detection Threshold: Adjustable from 20mV to 160mV
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The BQ29330DBT has a total of 14 pins, each serving a specific function. The detailed pin configuration is as follows:

1. VCC: Power supply input
2. GND: Ground reference
3. SDA: Serial data input/output for communication
4. SCL: Serial clock input for communication
5. ALERT: Open-drain output for alert indication
6. BAT: Battery voltage sense input
7. VC1: Cell 1 voltage sense input
8. VC2: Cell 2 voltage sense input
9. VC3: Cell 3 voltage sense input
10. VC4: Cell 4 voltage sense input
11. VC5: Cell 5 voltage sense input
12. VC6: Cell 6 voltage sense input
13. VSS: Negative terminal of the battery pack
14. VDD: Positive terminal of the battery pack

Functional Features

• Accurate monitoring of battery voltage and cell voltages
• Real-time protection against overvoltage, undervoltage, overcurrent, and short-circuit conditions
• Communication interface for system integration and status reporting
• Low power consumption during standby mode
• Fast response time to protect the battery and connected devices

Advantages

• Comprehensive protection for lithium-ion and lithium-polymer batteries
• Adjustable thresholds for customized protection settings
• Compact size allows for easy integration into various applications
• Reliable performance and high accuracy monitoring
• Cost-effective solution for battery protection needs

Disadvantages

• Limited to specific battery chemistries (lithium-ion and lithium-polymer)
• Requires external microcontroller or host system for full functionality
• Not suitable for applications with different battery chemistries or voltage ranges

Working Principles

The BQ29330DBT operates by continuously monitoring the battery voltage and individual cell voltages. It compares these values with the user-defined thresholds to detect abnormal conditions. When an overvoltage, undervoltage, overcurrent, or short-circuit event is detected, the IC triggers appropriate actions to protect the battery and connected devices. These actions may include disconnecting the load, activating an alert signal, or shutting down the system.

Application Field Plans

The BQ29330DBT is widely used in various battery-powered applications, including: - Portable electronic devices (smartphones, tablets, laptops) - Electric vehicles and hybrid electric vehicles - Power tools and cordless devices - Energy storage systems - Medical devices - Industrial equipment

Alternative Models

For users seeking alternative models with similar functionality, the following options are available: - BQ29312DBT - BQ29312ARTHR - BQ29312PW

These alternatives offer comparable features and can be considered based on specific application requirements.

In conclusion, the BQ29330DBT is a highly reliable battery protection IC designed for lithium-ion and lithium-polymer batteries. Its advanced features, compact size, and customizable thresholds make it an ideal choice for various battery-powered applications.