BQ24031RHLR

Product Overview

Category

The BQ24031RHLR belongs to the category of battery charger integrated circuits (ICs).

Use

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

Characteristics

• The BQ24031RHLR is a highly efficient and compact charger IC.
• It offers a wide input voltage range, making it suitable for various power sources.
• The IC incorporates multiple safety features to protect the battery during charging.
• It supports both USB and AC adapter inputs for charging flexibility.

Package

The BQ24031RHLR is available in a small 20-pin VQFN package.

Essence

The essence of the BQ24031RHLR lies in its ability to provide a reliable and efficient charging solution for single-cell lithium-ion or lithium-polymer batteries.

Packaging/Quantity

The BQ24031RHLR is typically sold in reels containing 250 units per reel.

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Charge Voltage: Programmable from 3.5V to 4.44V
• Charge Current: Programmable up to 1.5A
• Pre-Charge Current: Programmable up to 500mA
• Termination Current: Programmable up to 100mA
• Battery Temperature Monitoring: Yes
• Thermal Regulation: Yes
• Reverse Leakage Protection: Yes
• Status Indication: Yes

Detailed Pin Configuration

The BQ24031RHLR has the following pin configuration:

1. EN (Enable)
2. STAT (Status Indicator)
3. PG (Power Good)
4. TS (Thermal Sense)
5. ISET (Charge Current Set)
6. PROG (Charge Voltage Programming)
7. VSS (Ground)
8. VDD (Supply Voltage)
9. AC (AC Adapter Input)
10. USB (USB Input)
11. BAT (Battery Connection)
12. TS2 (Thermal Sense 2)
13. DPPM (D+/D- Pull-down Mode)
14. DCP (Dedicated Charging Port Detection)
15. DP (D+ Data Line)
16. DM (D- Data Line)
17. SRN (System Reset Output)
18. SRP (System Reset Input)
19. VBUS (USB Bus Voltage)
20. ILIM (Input Current Limit)

Functional Features

1. High Efficiency: The BQ24031RHLR incorporates a synchronous switching charger, ensuring high charging efficiency.
2. Safety Features: The IC includes protection mechanisms such as thermal regulation, reverse leakage protection, and battery temperature monitoring to ensure safe charging.
3. Flexible Input Options: It supports both USB and AC adapter inputs, allowing for versatile charging options.
4. Status Indication: The status indicator pin provides visual feedback on the charging process.

Advantages and Disadvantages

Advantages

• High charging efficiency
• Multiple safety features for battery protection
• Wide input voltage range
• Compact package size
• Versatile input options

Disadvantages

• Limited to single-cell lithium-ion or lithium-polymer batteries
• Not suitable for multi-cell battery charging applications

Working Principles

The BQ24031RHLR operates by regulating the charging current and voltage according to the programmed settings. It uses a synchronous switching charger architecture to achieve high efficiency. The IC continuously monitors the battery temperature and adjusts the charging parameters accordingly to prevent overheating and ensure safe charging.

Detailed Application Field Plans

The BQ24031RHLR is commonly used in portable electronic devices such as smartphones, tablets, portable media players, and wireless headsets. It is also suitable for various battery-powered IoT devices, wearable devices, and other portable electronics that require single-cell lithium-ion or lithium-polymer battery charging.

Detailed and Complete Alternative Models

• BQ24032RHLR
• BQ24033RHLR
• BQ24034RHLR
• BQ24035RHLR
• BQ24036RHLR

These alternative models offer similar functionality and characteristics to the BQ24031RHLR, providing options for different design requirements and specifications.

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