BQ294702DSGR

Product Overview

Category

BQ294702DSGR belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• Package: The BQ294702DSGR comes in a small outline package (SOP) with 8 pins.
• Essence: It provides overvoltage, undervoltage, and overcurrent protection for batteries.
• Packaging/Quantity: The IC is typically sold in reels or tubes, with a quantity of 2500 units per reel.

Specifications

The BQ294702DSGR has the following specifications:

• Supply Voltage Range: 2.5V to 18V
• Operating Temperature Range: -40°C to +85°C
• Overvoltage Protection Threshold: Adjustable from 3.9V to 4.6V
• Undervoltage Protection Threshold: Adjustable from 1.8V to 3.1V
• Overcurrent Detection Threshold: Adjustable from 50mV to 100mV

Detailed Pin Configuration

The BQ294702DSGR has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. BAT: Battery connection
4. OV: Overvoltage detection output
5. UV: Undervoltage detection output
6. OC: Overcurrent detection output
7. SDA: I2C serial data input/output
8. SCL: I2C serial clock input

Functional Features

The functional features of the BQ294702DSGR include:

• Overvoltage Protection: Monitors the battery voltage and triggers an alarm or shuts down the system if it exceeds the set threshold.
• Undervoltage Protection: Detects low battery voltage and takes appropriate action to prevent damage to the battery or connected devices.
• Overcurrent Protection: Detects excessive current flow and provides protection against short circuits or other abnormal conditions.

Advantages and Disadvantages

Advantages of using the BQ294702DSGR include:

• Reliable Battery Protection: Ensures the safety and longevity of batteries in electronic devices.
• Adjustable Thresholds: Allows customization of protection levels based on specific application requirements.
• Compact Size: The small outline package makes it suitable for space-constrained designs.

Disadvantages of using the BQ294702DSGR include:

• Limited Compatibility: May not be compatible with all battery chemistries or voltage ranges.
• External Components Required: Additional components may be needed to implement complete battery protection.

Working Principles

The BQ294702DSGR works by continuously monitoring the battery voltage, comparing it to the set thresholds, and taking appropriate action when a fault condition is detected. It utilizes internal circuitry to measure voltage and current, and communicates with the system controller through the I2C interface.

Detailed Application Field Plans

The BQ294702DSGR can be used in various applications, including:

1. Portable Electronics: Provides battery protection for smartphones, tablets, and portable gaming devices.
2. Power Tools: Ensures safe operation and prevents damage to batteries in cordless power tools.
3. Electric Vehicles: Protects the battery pack from overvoltage, undervoltage, and overcurrent conditions.
4. Renewable Energy Systems: Safeguards batteries used in solar power systems or wind energy storage.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the BQ294702DSGR are:

1. MAX14920: Integrated battery protection IC with adjustable thresholds and I2C interface.
2. LTC6804: Multicell battery monitor and protector with high accuracy and stackable architecture.
3. TPS26600: Smart overvoltage and overcurrent protection device with adjustable thresholds.

These alternative models can be considered based on specific application requirements and compatibility with the system design.

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