BQ24616RGER

Product Overview

Category

BQ24616RGER belongs to the category of battery charger integrated circuits (ICs).

Use

This IC is primarily used for charging single-cell lithium-ion or lithium-polymer batteries.

Characteristics

• The BQ24616RGER is a highly efficient and compact charger IC.
• It offers a wide input voltage range, making it suitable for various applications.
• The IC incorporates several safety features to protect the battery during charging.
• It supports multiple charging modes, including pre-charge, constant current, and constant voltage.

Package

The BQ24616RGER is available in a small outline package (SOP) with 20 pins.

Essence

The essence of the BQ24616RGER lies in its ability to provide a reliable and efficient charging solution for single-cell lithium-ion or lithium-polymer batteries.

Packaging/Quantity

The IC is typically sold in reels or tubes, with quantities varying depending on the supplier. Common packaging options include tape and reel, with quantities ranging from a few hundred to several thousand units per reel.

Specifications

• Input Voltage Range: 4.5V to 26V
• Charging Voltage Range: 3.5V to 4.4V
• Maximum Charging Current: 3A
• Operating Temperature Range: -40°C to +85°C
• Control Method: Constant Current/Constant Voltage (CC/CV)
• Charge Termination: Automatic based on charge current
• Safety Features: Overvoltage protection, overcurrent protection, thermal regulation, and battery temperature monitoring

Detailed Pin Configuration

The BQ24616RGER has a total of 20 pins. Here is a detailed pin configuration:

1. VREF: Reference voltage output
2. ISET: Current sense resistor connection
3. TS: Battery temperature sense input
4. BAT: Battery positive terminal connection
5. PGND: Power ground
6. STAT: Status output pin
7. VSS: Negative supply voltage
8. SRN: Sense resistor negative terminal connection
9. SRP: Sense resistor positive terminal connection
10. PROG: Programming pin for setting charge current
11. ILIM: Input current limit programming pin
12. AC/DC: Input power source selection pin
13. EN/UVLO: Enable and undervoltage lockout control pin
14. IADP: Adapter current sense input
15. VADP: Adapter voltage sense input
16. VCC: Positive supply voltage
17. SDA: I2C data line
18. SCL: I2C clock line
19. INT: Interrupt output pin
20. NC: No connection

Functional Features

• Pre-charge mode to safely charge deeply discharged batteries.
• Constant current mode for efficient charging until a certain voltage threshold is reached.
• Constant voltage mode to maintain the battery at its maximum voltage level.
• Automatic charge termination based on charge current.
• Thermal regulation to prevent overheating during charging.
• Overvoltage and overcurrent protection for safe operation.

Advantages and Disadvantages

Advantages

• High efficiency charging with minimal power loss.
• Wide input voltage range allows compatibility with various power sources.
• Compact size and small footprint.
• Multiple safety features ensure safe and reliable charging.

Disadvantages

• Limited to single-cell lithium-ion or lithium-polymer batteries.
• Requires additional external components for complete charging circuit implementation.

Working Principles

The BQ24616RGER operates based on the constant current/constant voltage (CC/CV) charging method. It regulates the charging current and voltage to ensure optimal charging of the battery. The IC monitors the battery voltage, temperature, and charging current to adjust its operation accordingly. It terminates the charging process when the charge current drops below a certain threshold or when the maximum charging voltage is reached.

Detailed Application Field Plans

The BQ24616RGER finds applications in various portable electronic devices that utilize single-cell lithium-ion or lithium-polymer batteries. Some common application fields include:

1. Smartphones and tablets
2. Portable media players
3. Bluetooth headsets
4. Wearable devices
5. Portable gaming consoles

Detailed and Complete Alternative Models

• BQ24617RGER
• BQ24618RGER
• BQ24619RGER
• BQ24620RGER

These alternative models offer similar functionality and features, with slight variations in specifications and pin configurations. They can be considered as alternatives to the BQ24616RGER based on specific requirements and design considerations.

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