BQ24038RHLR

Product Overview

Category

BQ24038RHLR belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This IC is commonly used in portable electronic devices, such as smartphones, tablets, and wearable devices, to efficiently charge lithium-ion batteries.

Characteristics

• High charging efficiency
• Compact size
• Low power consumption
• Overvoltage protection
• Overcurrent protection
• Thermal regulation

Package

BQ24038RHLR is available in a small outline package (SOP) with a thermal pad for enhanced heat dissipation.

Essence

The essence of BQ24038RHLR lies in its ability to provide a reliable and efficient charging solution for lithium-ion batteries in portable electronic devices.

Packaging/Quantity

This IC is typically supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input voltage range: 4.35V - 6.45V
• Charging current range: 100mA - 1.5A
• Programmable charge termination voltage
• Programmable charge current limit
• Battery temperature monitoring
• Automatic recharge feature
• Power-path management

Detailed Pin Configuration

1. VBUS: Input voltage from USB or AC adapter
2. PG: Power good indicator output
3. STAT: Charging status indicator output
4. TS: Battery temperature sense input
5. BAT: Battery positive terminal
6. GND: Ground reference
7. PROG: Charge current programming pin
8. EN: Enable control input
9. ISET: Input current limit programming pin

Functional Features

• Constant current/constant voltage charging
• Thermal regulation to prevent overheating
• Charge termination based on programmable voltage threshold
• Automatic recharge when battery voltage drops below a certain level
• Power-path management allows simultaneous charging and discharging

Advantages and Disadvantages

Advantages

• High charging efficiency ensures faster battery charging
• Compact size enables integration into small electronic devices
• Overvoltage and overcurrent protection safeguards the battery and device
• Thermal regulation prevents overheating, ensuring safe operation

Disadvantages

• Limited input voltage range may restrict compatibility with certain power sources
• Programming charge termination voltage and current limit requires careful configuration

Working Principles

BQ24038RHLR operates based on a constant current/constant voltage charging algorithm. It regulates the charging current to maintain a steady flow of energy into the battery until the programmable charge termination voltage is reached. The IC also monitors the battery temperature to prevent overheating during the charging process.

Detailed Application Field Plans

BQ24038RHLR finds extensive application in various portable electronic devices, including: - Smartphones - Tablets - Wearable devices - Portable gaming consoles - Bluetooth headsets - Digital cameras

Detailed and Complete Alternative Models

1. BQ24032ARHLR: Similar functionality with a lower charging current range.
2. BQ24070RHLR: Higher charging current range and additional features like USB OTG support.
3. BQ24075RHLR: Enhanced power-path management capabilities and higher input voltage range.

These alternative models offer similar functionalities to BQ24038RHLR but may have different specifications and features tailored for specific applications.

In conclusion, BQ24038RHLR is a highly efficient integrated circuit designed for charging lithium-ion batteries in portable electronic devices. Its compact size, comprehensive protection features, and thermal regulation make it an ideal choice for various applications.