BQ24026DRCR

Product Overview

Category

BQ24026DRCR 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: 3.5V to 4.44V
• Charging current up to 1.5A
• Integrated power FET
• Thermal regulation and protection
• Charge status indication
• Small form factor package

Package and Quantity

The BQ24026DRCR is available in a small 10-pin VSON package. It is typically sold in reels with a quantity of 3000 units per reel.

Specifications

• Input Voltage Range: 4.35V to 6.45V
• Output Voltage Range: 3.5V to 4.44V
• Charging Current: Up to 1.5A
• Operating Temperature Range: -40°C to +85°C
• Package Type: 10-pin VSON

Pin Configuration

The BQ24026DRCR has the following pin configuration:

1. EN (Enable)
2. STAT (Status)
3. PG (Power Good)
4. TS (Thermal Sense)
5. PROG (Programmable)
6. ISET (Current Set)
7. GND (Ground)
8. BAT (Battery)
9. SYS (System)
10. IN (Input)

Functional Features

1. Integrated Power FET: The BQ24026DRCR incorporates an integrated power FET, eliminating the need for an external switch.
2. Thermal Regulation and Protection: The device includes thermal regulation and protection features to prevent overheating during charging.
3. Charge Status Indication: The STAT pin provides information about the charging status, allowing the system to monitor the battery charge level.
4. Programmable Current Limit: The PROG pin allows the user to set the charging current limit according to the specific battery requirements.

Advantages and Disadvantages

Advantages

• Integrated power FET simplifies the design and reduces external component count.
• Thermal regulation and protection ensure safe and efficient charging.
• Charge status indication enables accurate monitoring of battery charge level.
• Programmable current limit offers flexibility for different battery types.

Disadvantages

• Limited input voltage range may not be suitable for all applications.
• The small package size may require careful handling during assembly.

Working Principles

The BQ24026DRCR operates by regulating the charging current and voltage to the connected lithium-ion or lithium-polymer battery. It uses a constant current/constant voltage (CC/CV) charging algorithm to ensure optimal charging efficiency and battery life. The integrated power FET controls the charging process, while the thermal regulation feature prevents excessive heat generation. The charge status indication pin provides real-time information about the battery's charge level.

Application Field Plans

The BQ24026DRCR is widely used in various portable electronic devices that require single-cell lithium-ion or lithium-polymer battery charging. Some common application fields include:

1. Smartphones: The BQ24026DRCR is commonly found in smartphones to provide efficient and safe battery charging.
2. Tablets: Tablet devices often utilize this IC to enable fast and reliable charging of their batteries.
3. Wearable Devices: Fitness trackers, smartwatches, and other wearable devices benefit from the BQ24026DRCR's compact size and charging capabilities.

Alternative Models

For those seeking alternative options, the following models offer similar functionality to the BQ24026DRCR:

1. MCP73831: This IC from Microchip Technology offers single-cell lithium-ion battery charging with integrated power FET and thermal regulation.
2. MAX1555: Maxim Integrated's MAX1555 provides a compact solution for single-cell lithium-ion or lithium-polymer battery charging.
3. LTC4054: Linear Technology's LTC4054 is a versatile IC suitable for charging single-cell lithium-ion or lithium-polymer batteries.

These alternative models can be considered based on specific application requirements and design constraints.

In conclusion, the BQ24026DRCR is an integrated circuit designed for efficient and safe charging of single-cell lithium-ion or lithium-polymer batteries. Its small form factor, integrated power FET, and thermal regulation features make it suitable for various portable electronic devices. While it has some limitations in terms of input voltage range, it offers advantages such as charge status indication and programmable current limit. The BQ24026DRCR finds applications in smartphones, tablets, and wearable devices, and alternative models like MCP73831, MAX