BQ24715RGRT - English Editing Encyclopedia Entry

Product Overview

Category

The BQ24715RGRT belongs to the category of power management integrated circuits (PMICs).

Use

This PMIC is primarily used for battery charging applications in portable electronic devices such as laptops, tablets, and smartphones.

Characteristics

• The BQ24715RGRT is a highly efficient and compact PMIC designed for single-cell or multi-cell Li-ion or Li-polymer battery packs.
• It supports various charging modes, including constant current (CC), constant voltage (CV), and pre-charge.
• The PMIC incorporates advanced safety features like overvoltage protection (OVP), overcurrent protection (OCP), and thermal regulation.
• It offers programmable charge current and voltage limits, allowing flexibility in battery charging profiles.

Package and Quantity

The BQ24715RGRT is available in a small outline 20-pin VQFN package. It is typically sold in reels with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 24V
• Charge Current Range: Up to 8A
• Charge Voltage Range: Up to 25.2V
• Operating Temperature Range: -40°C to +85°C
• Efficiency: Up to 95%
• Standby Current: Less than 10µA

Pin Configuration

The BQ24715RGRT has the following pin configuration:

1. ACIN: Input voltage from AC adapter
2. ACOK: AC adapter present indicator
3. BAT: Battery pack connection
4. TS: Thermistor input for temperature monitoring
5. SRN: System reset output
6. SDA: I2C data line
7. SCL: I2C clock line
8. INT: Interrupt output
9. ILIM: Charge current limit programming
10. PROG: Charge voltage programming
11. TS2: Second thermistor input
12. VSS: Ground
13. VDD: Power supply for internal circuitry
14. PGND: Power ground
15. STAT1: Charging status indicator
16. STAT2: Charging status indicator
17. SRP: System reset input
18. SRSET: Soft-reset input
19. SRPZ: System reset output
20. VREF: Reference voltage output

Functional Features

• Dynamic power management to optimize charging efficiency and reduce power dissipation.
• Integrated battery protection features, including overvoltage, overcurrent, and overtemperature protection.
• I2C interface for easy configuration and monitoring of charging parameters.
• Support for system reset and soft-reset functions.
• Fault detection and reporting capabilities.

Advantages and Disadvantages

Advantages

• High charging efficiency ensures faster charging times.
• Comprehensive safety features protect the battery pack from damage.
• Flexible programmability allows customization of charging profiles.
• Compact package size enables integration into space-constrained devices.

Disadvantages

• Limited to single-cell or multi-cell Li-ion or Li-polymer battery packs.
• Requires external components for complete charging circuit implementation.
• Relatively higher cost compared to simpler charging solutions.

Working Principles

The BQ24715RGRT operates by regulating the charging current and voltage supplied to the battery pack. It continuously monitors the battery's state of charge and adjusts the charging parameters accordingly. The PMIC utilizes a switching regulator topology to achieve high efficiency and minimize power dissipation during charging. Safety features like overvoltage and overcurrent protection ensure the battery pack remains within safe operating limits.

Application Field Plans

The BQ24715RGRT is widely used in various portable electronic devices that require efficient and reliable battery charging. Some of the application fields include:

1. Laptops and Ultrabooks
2. Tablets and Convertible Devices
3. Smartphones and Mobile Devices
4. Portable Gaming Consoles
5. Portable Medical Devices

Alternative Models

For users seeking alternative options, the following PMICs can be considered:

1. BQ24725RGRR
2. BQ24735RGRR
3. BQ24745RGRR
4. BQ24755RGRR

These models offer similar functionality and characteristics to the BQ24715RGRT, providing flexibility in choosing the most suitable PMIC for specific applications.

In conclusion, the BQ24715RGRT is a highly efficient and versatile power management integrated circuit designed for battery charging applications in portable electronic devices. Its advanced features, compact package, and programmability make it an ideal choice for various consumer electronics.