BQ28550DRZT

Product Overview

Category

BQ28550DRZT belongs to the category of integrated circuits (ICs) specifically designed for battery management systems.

Use

This product is primarily used in applications where accurate monitoring and protection of lithium-ion batteries are required. It provides essential functions such as voltage, current, and temperature monitoring, as well as overvoltage and undervoltage protection.

Characteristics

• High accuracy: The BQ28550DRZT offers precise measurements of battery parameters, ensuring reliable performance.
• Low power consumption: This IC is designed to minimize power consumption, making it suitable for battery-powered devices.
• Small form factor: With its compact size, the BQ28550DRZT can be easily integrated into various electronic systems.
• Robust protection features: It includes built-in safeguards to prevent battery damage due to overcharging, overdischarging, or excessive temperature.

Package

The BQ28550DRZT is available in a small outline transistor (SOT) package, which ensures ease of handling during assembly.

Essence

The essence of the BQ28550DRZT lies in its ability to accurately monitor and protect lithium-ion batteries, enhancing their overall safety and performance.

Packaging/Quantity

This product is typically packaged in reels, with each reel containing a specific quantity of ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Operating Voltage Range: 2.7V to 5.5V
• Temperature Measurement Range: -40°C to +125°C
• Voltage Measurement Accuracy: ±0.25%
• Current Measurement Accuracy: ±1%
• Overvoltage Protection Threshold: Configurable
• Undervoltage Protection Threshold: Configurable

Detailed Pin Configuration

The BQ28550DRZT has a total of 16 pins, each serving a specific function. The pin configuration is as follows:

1. VSS: Ground
2. VDD: Power supply voltage
3. SDA: Serial data input/output
4. SCL: Serial clock input
5. ALERT: Alert output
6. TS1: Temperature sense input 1
7. TS2: Temperature sense input 2
8. BAT: Battery voltage sense input
9. CC: Charge current sense input
10. VSS: Ground
11. VSS: Ground
12. VSS: Ground
13. VSS: Ground
14. VSS: Ground
15. VSS: Ground
16. VSS: Ground

Functional Features

• Accurate battery parameter monitoring
• Overvoltage and undervoltage protection
• Temperature monitoring for thermal management
• Configurable alert output for system integration
• Low power consumption for extended battery life

Advantages and Disadvantages

Advantages

• High accuracy measurements ensure reliable battery monitoring.
• Robust protection features prevent battery damage.
• Compact size allows for easy integration into various systems.
• Low power consumption prolongs battery life.

Disadvantages

• Limited to lithium-ion battery applications.
• Requires proper configuration for optimal performance.

Working Principles

The BQ28550DRZT operates by continuously monitoring the battery voltage, current, and temperature. It compares these values with predefined thresholds to detect abnormal conditions such as overvoltage or excessive temperature. When a fault is detected, the IC triggers the appropriate protection mechanism to safeguard the battery from potential damage.

Detailed Application Field Plans

The BQ28550DRZT finds extensive use in various applications, including: - Electric vehicles (EVs) and hybrid electric vehicles (HEVs) - Portable electronic devices - Energy storage systems - Uninterruptible power supplies (UPS) - Industrial equipment

Detailed and Complete Alternative Models

1. BQ76930: A similar IC with additional features for multi-cell battery management.
2. LTC6804: Offers comprehensive monitoring and balancing capabilities for high-voltage battery packs.
3. MAX14920: Provides isolated communication and protection for battery-powered systems.

These alternative models offer different functionalities and may be suitable for specific application requirements.

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