BQ294708DSGR

Product Overview

Category

BQ294708DSGR 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 at low power consumption levels.

Package

BQ294708DSGR is available in a small outline package (SOP) with 8 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 approximately 2500 units.

Specifications

• Input Voltage Range: 2.5V to 28V
• Overvoltage Protection Threshold: Adjustable from 2.7V to 5.5V
• Undervoltage Protection Threshold: Adjustable from 1.8V to 4.6V
• Overcurrent Detection Threshold: Adjustable from 10mV to 100mV
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground reference
3. SDA: Serial data input/output
4. SCL: Serial clock input
5. ALERT: Open-drain output for fault indication
6. VSS: Negative terminal of the battery
7. VBAT: Positive terminal of the battery
8. NTC: Negative temperature coefficient thermistor input

Functional Features

• Overvoltage protection: Automatically disconnects the battery when the voltage exceeds the set threshold.
• Undervoltage protection: Cuts off the battery connection when the voltage drops below the set threshold.
• Overcurrent protection: Interrupts the battery circuit if the current exceeds the specified limit.
• Temperature monitoring: Allows connection of an NTC thermistor for temperature-based protection.

Advantages and Disadvantages

Advantages

• Provides comprehensive battery protection in a compact form factor.
• Offers adjustable thresholds for customized protection settings.
• Supports communication interfaces for easy integration into various systems.
• Low power consumption ensures minimal impact on battery life.

Disadvantages

• Limited to a specific range of input voltages (2.5V to 28V).
• Requires additional components, such as an NTC thermistor, for temperature monitoring.

Working Principles

BQ294708DSGR operates by continuously monitoring the battery voltage and current. It compares these values with the user-defined thresholds to determine if any protection action is required. When a fault condition is detected, such as overvoltage or overcurrent, the IC disconnects the battery from the load to prevent damage. The ALERT pin provides a signal indicating the occurrence of a fault.

Detailed Application Field Plans

The BQ294708DSGR IC finds applications in various fields, including:

1. Portable electronic devices: Provides essential battery protection in smartphones, tablets, and laptops.
2. Electric vehicles: Ensures safe operation by protecting the battery pack from voltage spikes and excessive current.
3. Power banks: Safeguards the internal battery and connected devices from potential damage.
4. Renewable energy systems: Protects batteries used in solar panels and wind turbines from overcharging and overdischarging.

Detailed and Complete Alternative Models

1. BQ294709DSGR: Similar to BQ294708DSGR but offers additional features like short-circuit protection.
2. BQ294710DSGR: Provides enhanced communication capabilities and extended temperature range compared to BQ294708DSGR.
3. BQ294711DSGR: Designed for higher voltage applications, with an extended input voltage range up to 36V.

(Note: The above alternative models are suggestions and may not represent an exhaustive list.)

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