BQ24031RHLT - English Editing Encyclopedia Entry

Product Overview

Category

The BQ24031RHLT belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for battery charging applications in various electronic devices, such as smartphones, tablets, portable media players, and other portable electronic devices.

Characteristics

• The BQ24031RHLT is a highly efficient single-cell Li-Ion battery charger.
• It supports a wide input voltage range, making it suitable for different power sources.
• This IC incorporates various safety features to protect the battery and the device during charging.
• It offers programmable charge current and termination settings, allowing flexibility in charging different battery capacities.
• The BQ24031RHLT also includes thermal regulation to prevent overheating during charging.

Package and Quantity

The BQ24031RHLT is available in a small outline transistor (SOT) package. The specific package type is SOT-23-6. It is typically sold in reels or tubes containing a specified quantity of units, such as 2500 pieces per reel.

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Charge Voltage: 4.2V
• Programmable Charge Current: Up to 1A
• Termination Current: 10% of the programmed charge current
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The BQ24031RHLT has six pins arranged as follows:

```

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| | --| VBAT | --| VSS | --| STAT | --| PG | --| ISET | --| VBUS | |___________| ```

Pin descriptions: - VBAT: Battery voltage input - VSS: Ground reference - STAT: Charge status output - PG: Power good output - ISET: Charge current programming input - VBUS: Input voltage source

Functional Features

1. Wide Input Voltage Range: The BQ24031RHLT can accept a wide range of input voltages, allowing it to be used with various power sources.
2. Programmable Charge Current: This IC provides the flexibility to set the charge current according to the battery's capacity and charging requirements.
3. Safety Features: The BQ24031RHLT incorporates multiple safety features like thermal regulation, overvoltage protection, and short-circuit protection to ensure safe and reliable charging.
4. Charge Status Indication: The STAT pin provides information about the charging status, enabling the device to communicate the progress to the user or other system components.
5. Power Good Output: The PG pin indicates when the input voltage is within the acceptable range, ensuring proper power supply conditions.

Advantages and Disadvantages

Advantages

• High efficiency charging
• Wide input voltage range
• Programmable charge current
• Safety features for battery and device protection
• Compact package size

Disadvantages

• Limited to single-cell Li-Ion battery charging applications
• Not suitable for multi-cell battery systems

Working Principles

The BQ24031RHLT operates as a linear charger for single-cell Li-Ion batteries. It regulates the charging process by controlling the charge current and termination voltage. The IC monitors the battery voltage, adjusts the charging current accordingly, and terminates the charging process once the battery reaches the programmed voltage level.

Detailed Application Field Plans

The BQ24031RHLT is commonly used in various portable electronic devices, including: - Smartphones - Tablets - Portable media players - Bluetooth headsets - Wearable devices

Detailed and Complete Alternative Models

1. BQ24032RHLT: Similar to the BQ24031RHLT, but with additional features like battery temperature monitoring.
2. BQ24035RHLT: A higher current variant of the BQ24031RHLT, supporting charge currents up to 1.5A.
3. BQ24070RHLR: A multi-cell Li-Ion battery charger IC suitable for applications requiring charging of multiple cells.

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

In conclusion, the BQ24031RHLT is a highly efficient single-cell Li-Ion battery charger IC. It provides flexibility, safety features, and wide compatibility, making it an ideal choice for various portable electronic devices.