BQ24025DRCR - English Editing Encyclopedia Entry

Product Overview

Category

The BQ24025DRCR belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This IC is primarily used for managing and controlling the charging process of lithium-ion or lithium-polymer batteries in various electronic devices.

Characteristics

• The BQ24025DRCR offers a compact and efficient solution for battery charging.
• It incorporates multiple features such as overvoltage protection, thermal regulation, and charge termination to ensure safe and reliable charging.
• This IC supports both USB and AC adapter inputs, making it versatile for different charging scenarios.

Package and Quantity

The BQ24025DRCR is available in a small outline package (SON-10) which facilitates easy integration into electronic devices. It is typically sold in reels containing a specified quantity, usually 2500 units per reel.

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Charging Current Range: Up to 1.5A
• Charge Termination Threshold: Programmable
• Operating Temperature Range: -40°C to +85°C
• Efficiency: Up to 92%

Pin Configuration

The BQ24025DRCR has ten pins arranged as follows:

```

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| | | U | | S | | B | |___________| ```

1. VBUS: USB input voltage pin
2. AC: AC adapter input voltage pin
3. STAT: Status output pin
4. PG: Power good output pin
5. TS: Thermal sense input pin
6. ISET: Charge current programming pin
7. BAT: Battery voltage sense pin
8. GND: Ground pin
9. VSS: Negative battery terminal
10. VDD: Positive battery terminal

Functional Features

• Overvoltage Protection: The BQ24025DRCR safeguards the battery by preventing excessive voltage levels during charging.
• Thermal Regulation: It incorporates a thermal regulation feature to prevent overheating of the battery or the IC itself.
• Charge Termination: The IC terminates the charging process when the battery reaches a predefined voltage level, preventing overcharging.
• USB and AC Adapter Support: This IC can accept power input from both USB ports and AC adapters, providing flexibility in charging options.

Advantages and Disadvantages

Advantages

• Compact and efficient solution for battery charging applications.
• Multiple built-in protection features ensure safe and reliable charging.
• Versatile compatibility with both USB and AC adapter inputs.
• Programmable charge termination threshold allows customization based on battery requirements.

Disadvantages

• Limited charging current range compared to some other ICs in the market.
• Requires external components for complete charging circuit implementation.

Working Principles

The BQ24025DRCR operates by regulating the charging current and voltage supplied to the battery. It continuously monitors the battery voltage and adjusts the charging parameters accordingly. The IC employs a switching regulator to efficiently convert the input voltage into a suitable charging voltage for the battery. Various protection mechanisms are implemented to prevent overvoltage, overheating, and overcharging.

Detailed Application Field Plans

The BQ24025DRCR finds application in a wide range of portable electronic devices that utilize lithium-ion or lithium-polymer batteries. Some common application fields include: - Smartphones and tablets - Portable media players - Wearable devices - Bluetooth headsets - Portable gaming consoles

Alternative Models

For users seeking alternative options, the following models provide similar functionality to the BQ24025DRCR: - BQ24026DRCR - BQ24027DRCR - BQ24028DRCR

These models offer comparable features and can be considered as suitable replacements for the BQ24025DRCR.

In conclusion, the BQ24025DRCR is a compact and efficient integrated circuit designed for battery charging applications. With its versatile compatibility, built-in protection features, and programmable charge termination threshold, it offers a reliable solution for managing lithium-ion or lithium-polymer batteries in various electronic devices.

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