BQ24030RHLRG4 - English Editing Encyclopedia Entry

Product Overview

Category

BQ24030RHLRG4 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: 4.2V to 4.5V
• Charging current: Up to 1A
• Programmable charge termination current
• Thermal regulation and protection
• Reverse leakage protection
• Small form factor package

Package and Quantity

The BQ24030RHLRG4 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: 4.2V to 4.5V
• Maximum charging current: 1A
• Programmable charge termination current: 0.5A to 1A
• Operating temperature range: -40°C to +85°C
• Thermal shutdown protection: Yes
• Reverse leakage protection: Yes
• Package type: SOP-8 with thermal pad

Pin Configuration

The BQ24030RHLRG4 features an 8-pin small outline package (SOP) with the following pin configuration:

1. VBUS: Input voltage from USB port
2. PG: Power good indicator output
3. STAT: Charging status indicator output
4. TS: Temperature sense input
5. PROG: Charge termination current programming input
6. BAT: Battery voltage sense input
7. GND: Ground reference
8. VOUT: Output voltage to the battery

Functional Features

1. Thermal Regulation and Protection: The BQ24030RHLRG4 incorporates thermal regulation to prevent overheating during charging. It also provides thermal shutdown protection in case of excessive temperature rise.

2. Reverse Leakage Protection: This feature ensures that the battery does not discharge back into the charger when it is not connected to a power source.

3. Programmable Charge Termination Current: The charge termination current can be programmed using the PROG pin, allowing flexibility in setting the desired charging threshold.

4. Power Good and Charging Status Indicators: The PG and STAT pins provide visual indicators of the charging status and power availability.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• Programmable charge termination current enables customization based on battery requirements.
• Thermal regulation and protection ensure safe and efficient charging.
• Reverse leakage protection prevents battery discharge.
• Small form factor package facilitates integration into compact electronic devices.

Disadvantages

• Limited maximum charging current may not be suitable for high-capacity batteries or fast charging applications.
• Lack of advanced features such as USB Type-C compatibility or wireless charging support.

Working Principles

The BQ24030RHLRG4 operates by regulating the input voltage from a USB port and converting it to the appropriate output voltage for charging the connected lithium-ion or lithium-polymer battery. It employs a constant current/constant voltage (CC/CV) charging algorithm to ensure optimal charging efficiency and battery health. The device monitors the battery voltage, temperature, and charging current to adjust the charging parameters accordingly.

Detailed Application Field Plans

The BQ24030RHLRG4 is widely used in portable electronic devices that require single-cell lithium-ion or lithium-polymer battery charging. Some specific application fields include:

1. Smartphones and Tablets: The BQ24030RHLRG4 is commonly integrated into the charging circuitry of smartphones and tablets to provide efficient and safe battery charging.

2. Wearable Devices: It is also utilized in wearable devices such as smartwatches, fitness trackers, and wireless earbuds, where compact size and reliable charging are crucial.

3. Portable Medical Devices: The product finds application in portable medical devices like glucose meters, pulse oximeters, and portable nebulizers, ensuring uninterrupted power supply for critical healthcare needs.

Detailed and Complete Alternative Models

1. BQ24032RHLRG4: Similar to BQ24030RHLRG4, but with a higher maximum charging current of 1.5A.
2. BQ24031RHLRG4: Offers additional USB OTG (On-The-Go) functionality along with battery charging capabilities.
3. BQ24035RHLRG4: Provides support for USB Type-C connectivity and Power Delivery (PD) protocols, enabling faster charging and enhanced compatibility.

These alternative