BQ24027DRCR

Product Overview

Category

The BQ24027DRCR belongs to the category of battery charging and management integrated circuits (ICs).

Use

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

Characteristics

• The BQ24027DRCR is a highly efficient charger with an integrated power path management feature.
• It supports a wide input voltage range, making it suitable for various power sources.
• This IC offers multiple charging modes, including pre-charge, fast charge, and termination.
• It incorporates thermal regulation to prevent overheating during charging.
• The BQ24027DRCR also includes safety features such as overvoltage protection and short-circuit detection.

Package and Quantity

The BQ24027DRCR is available in a small 10-pin VSON package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Charging Current Range: Up to 1.5A
• Termination Voltage: 4.2V ± 1%
• Pre-Charge Current: 100mA ± 10%
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The BQ24027DRCR has ten pins arranged as follows:

```

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| | | U | | C | | B | | L | | K | | J | | H | | G | |___________| ```

Pin Description: - U: USB Input - C: Charge Status Output - B: Battery Connection - L: Inductor Connection - K: System Load Connection - J: Power Good Output - H: Thermal Regulation Input - G: Ground

Functional Features

1. Integrated Power Path Management: The BQ24027DRCR allows simultaneous charging and discharging, enabling the system to operate even when the battery is being charged.
2. Multiple Charging Modes: This IC supports pre-charge, fast charge, and termination modes, ensuring efficient and safe charging of lithium-ion or lithium-polymer batteries.
3. Safety Features: The BQ24027DRCR incorporates overvoltage protection and short-circuit detection mechanisms, safeguarding the battery and the charging circuitry.
4. Thermal Regulation: The thermal regulation feature prevents excessive heating during charging, enhancing the overall safety and reliability of the charging process.

Advantages and Disadvantages

Advantages

• High charging efficiency
• Wide input voltage range
• Integrated power path management
• Multiple charging modes for optimal battery performance
• Safety features for protection against overvoltage and short circuits

Disadvantages

• Limited to single-cell lithium-ion or lithium-polymer batteries
• Requires careful thermal management to prevent overheating

Working Principles

The BQ24027DRCR operates by regulating the charging current and voltage to ensure safe and efficient charging of lithium-ion or lithium-polymer batteries. It employs a combination of pre-charge, fast charge, and termination modes to optimize the charging process. The integrated power path management feature allows the system to draw power from both the battery and the input source simultaneously, providing uninterrupted operation.

Application Field Plans

The BQ24027DRCR finds applications in various portable electronic devices that utilize single-cell lithium-ion or lithium-polymer batteries. Some potential application fields include: - Smartphones and tablets - Portable media players - Wearable devices - Bluetooth headsets - GPS navigation systems

Alternative Models

1. BQ24025DRCR: Similar to the BQ24027DRCR, but with a lower charging current capability.
2. BQ24026DRCR: Similar to the BQ24027DRCR, but without the power path management feature.
3. BQ24028DRCR: Similar to the BQ24027DRCR, but with additional safety features such as overcurrent protection.

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

In conclusion, the BQ24027DRCR is a highly efficient battery charging and management IC designed for single-cell lithium-ion or lithium-polymer batteries. Its integrated power path management, multiple charging modes, and safety features make it suitable for various portable electronic devices.