BQ294624DRVT - English Editing Encyclopedia Entry

Product Overview

Category

BQ294624DRVT belongs to the category of integrated circuits (ICs).

Use

This IC is primarily used for battery protection in various electronic devices.

Characteristics

• BQ294624DRVT is a high-performance, low-power voltage detector.
• It offers accurate monitoring and protection for lithium-ion/polymer battery packs.
• The IC provides overvoltage, undervoltage, and short-circuit protection.
• It features a wide operating voltage range and low quiescent current consumption.
• BQ294624DRVT is designed to ensure safe and reliable operation of battery-powered systems.

Package

The BQ294624DRVT IC is available in a small outline package (SOT-23) with three pins.

Essence

The essence of BQ294624DRVT lies in its ability to safeguard battery packs by detecting and preventing potentially harmful voltage conditions.

Packaging/Quantity

The IC is typically sold in reels or tubes, with each reel/tube containing a specific quantity of BQ294624DRVT units. The exact quantity may vary depending on the supplier.

Specifications

• Operating Voltage Range: 2.5V to 28V
• Quiescent Current: 10µA (typical)
• Overvoltage Threshold: Adjustable from 2.5V to 5.5V
• Undervoltage Threshold: Adjustable from 1.8V to 4.6V
• Short-Circuit Detection Threshold: 50mV (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The BQ294624DRVT IC has three pins:

1. VDD: Power supply input pin (+2.5V to +28V).
2. GND: Ground reference pin.
3. VOUT: Output pin that provides a logic-level signal indicating the battery's voltage status.

Functional Features

1. Overvoltage Protection: Monitors the battery voltage and triggers an alert or disconnects the load when the voltage exceeds the set threshold.
2. Undervoltage Protection: Detects low battery voltage and initiates appropriate actions to prevent damage to the battery or connected devices.
3. Short-Circuit Protection: Detects excessive current flow due to a short circuit and shuts down the system to avoid further damage.
4. Adjustable Thresholds: Allows customization of overvoltage and undervoltage thresholds to suit specific application requirements.
5. Low Quiescent Current: Ensures minimal power consumption during normal operation, prolonging battery life.

Advantages and Disadvantages

Advantages

• Provides comprehensive protection for lithium-ion/polymer battery packs.
• Wide operating voltage range enables compatibility with various battery configurations.
• Customizable thresholds offer flexibility in different applications.
• Low quiescent current minimizes power consumption.

Disadvantages

• Limited to battery protection applications and not suitable for other purposes.
• Requires careful configuration to ensure optimal performance.

Working Principles

BQ294624DRVT operates by continuously monitoring the battery voltage using an internal voltage reference. It compares the measured voltage against the user-configured thresholds for overvoltage and undervoltage conditions. When a threshold is exceeded, the IC triggers the appropriate protection mechanism, such as activating an alert or disconnecting the load. The short-circuit protection feature detects excessive current flow and promptly shuts down the system to prevent damage.

Detailed Application Field Plans

BQ294624DRVT finds extensive use in various battery-powered systems, including but not limited to: - Portable electronic devices (e.g., smartphones, tablets) - Laptop computers - Electric vehicles - Uninterruptible power supplies (UPS) - Solar power systems - Industrial equipment

Detailed and Complete Alternative Models

1. BQ294625DRVT: Similar to BQ294624DRVT, but with additional features for enhanced battery protection.
2. BQ294626DRVT: A higher-performance variant with extended operating temperature range and improved accuracy.
3. BQ294627DRVT: Designed specifically for automotive applications, offering robust protection for vehicle battery packs.

These alternative models provide similar functionality to BQ294624DRVT while catering to specific requirements in different applications.

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