BQ24278RGER

Product Overview

Category

The BQ24278RGER belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for managing power in portable electronic devices such as smartphones, tablets, and other battery-powered devices.

Characteristics

• The BQ24278RGER is a highly efficient and compact power management solution.
• It offers various features for charging and protecting lithium-ion batteries.
• This IC supports multiple charging modes, including fast charging and USB On-The-Go (OTG) functionality.
• It incorporates advanced safety features to prevent overcharging, overvoltage, and overcurrent conditions.
• The BQ24278RGER also includes thermal regulation to ensure safe operation even under high temperature conditions.

Package and Quantity

The BQ24278RGER is available in a small 24-pin VQFN package. It is typically sold in reels or tubes containing a specified quantity of ICs.

Specifications

• Input Voltage Range: 3.9V to 6.45V
• Charging Current Range: Up to 3A
• Output Voltage Range: 3.9V to 4.8V
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 95%
• Protection Features: Overvoltage, Overcurrent, Overtemperature, Short Circuit

Pin Configuration

The BQ24278RGER has a detailed pin configuration as follows:

1. VIN: Input voltage pin
2. TS: Thermal sense pin
3. STAT: Status output pin
4. PG: Power good output pin
5. ISET: Charging current setting pin
6. VBUS: USB input voltage pin
7. GND: Ground pin
8. BAT: Battery voltage pin
9. TS/NTC: Thermal sense or NTC input pin
10. VOUT: Output voltage pin
11. SDA: I2C data pin
12. SCL: I2C clock pin
13. ILIM: Input current limit setting pin
14. EN: Enable pin
15. SRN: Serial resistor network pin
16. D+/D-: USB data pins
17. OTG: USB On-The-Go control pin
18. INT: Interrupt output pin
19. TS2: Second thermal sense pin
20. TS1: First thermal sense pin
21. TS3: Third thermal sense pin
22. TS4: Fourth thermal sense pin
23. TS5: Fifth thermal sense pin
24. TS6: Sixth thermal sense pin

Functional Features

The BQ24278RGER offers the following functional features:

1. Battery Charging: The IC supports various charging modes, including fast charging and trickle charging.
2. USB OTG Support: It enables devices to act as a host or peripheral in USB OTG applications.
3. Power Path Management: The IC allows simultaneous charging of the battery and powering the system.
4. Dynamic Power Management: It optimizes power delivery based on the device's requirements.
5. Safety Protection: The BQ24278RGER incorporates multiple protection mechanisms to prevent damage to the battery and the device.

Advantages and Disadvantages

Advantages: - High charging efficiency - Compact size - Multiple charging modes - Advanced safety features

Disadvantages: - Limited input voltage range - Requires external components for complete functionality

Working Principles

The BQ24278RGER operates by regulating the flow of power from the input source to the battery and the system. It utilizes a combination of charging algorithms, voltage regulation, and current control to ensure efficient and safe charging.

Detailed Application Field Plans

The BQ24278RGER is widely used in various portable electronic devices, including smartphones, tablets, portable media players, and wireless headsets. It is also suitable for applications that require USB OTG functionality and power path management.

Alternative Models

For those seeking alternative options, the following models provide similar functionality to the BQ24278RGER:

1. BQ24296RGET: This IC offers enhanced power path management and supports higher charging currents.
2. BQ24292RGER: It provides similar features but with a smaller package size.
3. BQ24295RGER: This model includes additional safety features such as battery temperature monitoring.

These alternative models can be considered based on specific requirements and design constraints.

In conclusion, the BQ24278RGER is a highly efficient and compact power management IC designed for charging and protecting lithium-ion batteries in portable electronic devices. Its multiple charging modes, advanced safety features, and USB OTG support make it a versatile choice for various applications.

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