BQ29441DRBR

Product Overview

Category

BQ29441DRBR belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• Provides overvoltage, undervoltage, and overcurrent protection for batteries.
• Offers accurate voltage and current monitoring.
• Supports high-speed communication interfaces.
• Operates efficiently with low power consumption.

Package

BQ29441DRBR is available in a small outline package (SOIC) with eight pins.

Essence

The essence of this product lies in its ability to safeguard batteries from potential damage caused by voltage fluctuations and excessive current flow.

Packaging/Quantity

The IC is typically packaged in reels or tubes, with each reel containing 2500 units.

Specifications

• Input Voltage Range: 2.5V to 28V
• Overvoltage Protection Threshold: Adjustable from 2.8V to 5.6V
• Undervoltage Protection Threshold: Adjustable from 1.8V to 4.6V
• Overcurrent Detection Threshold: Adjustable from 10mV to 100mV
• Communication Interface: I2C, SMBus
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. VDD: Power supply input
2. SDA: Serial data line for communication
3. SCL: Serial clock line for communication
4. GND: Ground connection
5. ALERT: Output signal indicating fault conditions
6. VSS: Negative supply voltage
7. BAT: Battery connection
8. VOUT: Output voltage for external circuitry

Functional Features

• Overvoltage Protection: Monitors battery voltage and disconnects it from the load when it exceeds the set threshold.
• Undervoltage Protection: Cuts off the battery from the load when its voltage falls below the set threshold.
• Overcurrent Protection: Detects excessive current flow and disconnects the battery to prevent damage.
• Communication Interface: Allows for easy configuration and monitoring of the IC's parameters.
• Fault Indication: Provides an output signal to indicate fault conditions.

Advantages and Disadvantages

Advantages

• Reliable battery protection against voltage fluctuations and overcurrent situations.
• Accurate monitoring of battery voltage and current.
• Flexible configuration options through the communication interface.
• Low power consumption ensures minimal impact on battery life.

Disadvantages

• Limited to applications requiring battery protection.
• Requires additional circuitry for complete battery management systems.

Working Principles

BQ29441DRBR operates by continuously monitoring the battery voltage and current. It compares these values with the user-defined thresholds for overvoltage, undervoltage, and overcurrent protection. When any of these thresholds are exceeded, the IC takes appropriate action to safeguard the battery and connected load. The communication interface allows users to configure the thresholds and monitor the IC's status.

Detailed Application Field Plans

The BQ29441DRBR IC finds extensive application in various electronic devices that rely on batteries for power. Some notable examples include:

1. Portable Electronics: Smartphones, tablets, and portable gaming devices benefit from the IC's battery protection features, ensuring safe and reliable operation.

2. Electric Vehicles: Battery-powered vehicles require robust protection against voltage spikes and overcurrent situations. This IC helps safeguard the vehicle's battery pack.

3. Energy Storage Systems: Batteries used in renewable energy storage systems can be effectively protected using this IC, preventing damage due to voltage fluctuations or excessive current.

4. Medical Devices: Critical medical equipment, such as patient monitors and implantable devices, can benefit from the IC's battery protection capabilities, ensuring uninterrupted operation.

Detailed and Complete Alternative Models

1. BQ29441DRBT: Similar to BQ29441DRBR, but available in a different package (thin shrink small outline package).
2. BQ29442DRBR: Offers additional features such as temperature monitoring and protection.
3. BQ29443DRBR: Provides enhanced communication capabilities and extended voltage range.

These alternative models offer similar functionality with slight variations to cater to specific application requirements.

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