BQ24316DSGR

Product Overview

Category

BQ24316DSGR belongs to the category of integrated circuits (ICs) used in power management.

Use

This IC is specifically designed for managing and controlling the charging and discharging of single-cell lithium-ion/polymer batteries.

Characteristics

• The BQ24316DSGR offers a compact and efficient solution for battery charging and protection.
• It provides various features such as overvoltage protection, overcurrent protection, and thermal shutdown.
• The IC supports high input voltage up to 26V, making it suitable for a wide range of applications.
• It has low quiescent current consumption, ensuring minimal power loss during operation.

Package

The BQ24316DSGR is available in a small 10-pin VSON package, which allows for easy integration into space-constrained designs.

Essence

The essence of BQ24316DSGR lies in its ability to provide reliable and safe charging and discharging control for single-cell lithium-ion/polymer batteries.

Packaging/Quantity

The IC is typically sold in reels or tubes containing a specified quantity, usually around 2500 units per reel.

Specifications

• Input Voltage Range: 3.5V to 26V
• Charging Current Range: Up to 2A
• Discharge Current Range: Up to 2A
• Overvoltage Protection Threshold: Adjustable from 3.9V to 4.6V
• Overcurrent Protection Threshold: Adjustable from 1.5A to 3.5A
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The BQ24316DSGR IC has the following pin configuration:

1. EN (Enable)
2. PG (Power Good)
3. STAT (Status)
4. GND (Ground)
5. VBUS (Input Voltage)
6. TS (Thermal Sense)
7. BAT (Battery Connection)
8. SRN (System Reset)
9. ISET (Current Limit Setting)
10. VOUT (Output Voltage)

Functional Features

1. Overvoltage Protection: The IC monitors the input voltage and disconnects the battery when it exceeds the set threshold, preventing damage to the battery.
2. Overcurrent Protection: It limits the charging and discharging current to protect the battery and other components from excessive current flow.
3. Thermal Shutdown: In case of high temperature, the IC shuts down to prevent overheating and potential damage.
4. Power Good Indicator: The PG pin provides a signal indicating the presence of a valid input voltage.
5. System Reset: The SRN pin allows for a system reset by toggling the pin state.

Advantages and Disadvantages

Advantages

• Compact size and easy integration into space-constrained designs.
• Wide input voltage range enables compatibility with various power sources.
• Provides comprehensive protection features for safe battery management.
• Low quiescent current consumption minimizes power loss during operation.

Disadvantages

• Limited to single-cell lithium-ion/polymer battery applications.
• Requires external components for complete battery charging circuitry.

Working Principles

The BQ24316DSGR operates based on a combination of voltage and current monitoring techniques. It continuously monitors the input voltage, output voltage, and current flow to ensure safe charging and discharging of the connected battery. The IC utilizes internal control logic to regulate the charging and discharging currents within the specified limits. It also incorporates protection mechanisms to safeguard against overvoltage, overcurrent, and thermal events.

Detailed Application Field Plans

The BQ24316DSGR is widely used in portable electronic devices, such as smartphones, tablets, and wearable devices, where single-cell lithium-ion/polymer batteries are commonly employed. It is also suitable for power banks, portable chargers, and other battery-powered applications that require efficient charging and protection.

Detailed and Complete Alternative Models

1. BQ24314DSGR: Similar to BQ24316DSGR but with a lower charging current capability.
2. BQ24318DSGR: Similar to BQ24316DSGR but with a higher charging current capability.
3. BQ24320DSGR: Similar to BQ24316DSGR but with additional features like battery temperature monitoring.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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