BQ24012DRCR - English Editing Encyclopedia Entry

Product Overview

Category

BQ24012DRCR belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This product is primarily used for charging single-cell lithium-ion or lithium-polymer batteries in portable electronic devices such as smartphones, tablets, and wearable devices.

Characteristics

• Input voltage range: 4.35V to 6.45V
• Output voltage range: 3.5V to 4.44V
• Charging current up to 1A
• Integrated power FET
• Thermal regulation and protection
• Battery temperature monitoring
• Charge status indication

Package and Quantity

The BQ24012DRCR is available in a small outline package (SOP) with a thermal pad for enhanced heat dissipation. It is typically sold in reels or tubes containing a specified quantity of units.

Specifications

• Input voltage range: 4.35V to 6.45V
• Output voltage range: 3.5V to 4.44V
• Maximum charging current: 1A
• Operating temperature range: -40°C to +85°C
• Standby current: < 100µA
• Overvoltage protection: 6.8V
• Undervoltage lockout: 3.2V
• Thermal regulation threshold: 125°C

Pin Configuration

The BQ24012DRCR has the following pin configuration:

1. VBUS: Input voltage from USB or external power source
2. STAT: Charge status output
3. PG: Power good output
4. TS: Battery temperature sense input
5. BAT: Battery positive terminal
6. GND: Ground
7. PROG: Charge current programming input
8. VOUT: Regulated output voltage

Functional Features

1. Integrated Power FET: The BQ24012DRCR incorporates a power field-effect transistor (FET) for efficient battery charging.
2. Thermal Regulation and Protection: The device includes thermal regulation to prevent overheating during charging, ensuring safe operation.
3. Battery Temperature Monitoring: It features a temperature sense input to monitor the battery temperature and adjust the charging parameters accordingly.
4. Charge Status Indication: The STAT pin provides information about the charging status, allowing the user to monitor the progress.
5. Programmable Charge Current: The PROG pin enables the user to set the desired charging current based on the battery's specifications.

Advantages and Disadvantages

Advantages

• Compact size and integrated design
• Efficient charging with integrated power FET
• Thermal regulation for safe operation
• Battery temperature monitoring for optimal charging
• Charge status indication for user convenience

Disadvantages

• Limited input and output voltage range
• Maximum charging current limited to 1A

Working Principles

The BQ24012DRCR operates by regulating the input voltage from a USB or external power source to charge the connected lithium-ion or lithium-polymer battery. It utilizes an integrated power FET to efficiently transfer power to the battery. The device also monitors the battery temperature and adjusts the charging parameters accordingly to ensure safe and optimal charging.

Detailed Application Field Plans

The BQ24012DRCR is widely used in various portable electronic devices that require single-cell lithium-ion or lithium-polymer battery charging. Some common application fields include:

1. Smartphones
2. Tablets
3. Wearable devices (smartwatches, fitness trackers)
4. Portable audio players
5. Bluetooth headsets
6. Portable gaming consoles

Detailed and Complete Alternative Models

1. BQ24014: Similar to BQ24012DRCR, but with a higher maximum charging current of 1.5A.
2. BQ24032: Offers additional features such as USB OTG support and integrated load switch.
3. BQ24072: Designed for dual-cell battery charging applications.

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

In conclusion, the BQ24012DRCR is an integrated circuit designed for single-cell lithium-ion or lithium-polymer battery charging in portable electronic devices. Its compact size, thermal regulation, and battery temperature monitoring make it suitable for various applications. However, its limited voltage range and charging current may pose limitations in certain scenarios.