BQ26220PWRG4 - English Editing Encyclopedia Entry

Product Overview

Category

BQ26220PWRG4 belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This product is primarily used for charging rechargeable batteries, providing a reliable and efficient solution for various electronic devices.

Characteristics

• High charging efficiency
• Wide input voltage range
• Overvoltage and overcurrent protection
• Temperature monitoring and control
• Fast charging capability

Package

BQ26220PWRG4 is available in a small outline package (SOP) with 16 pins. This package ensures easy integration into circuit boards and provides mechanical stability.

Essence

The essence of BQ26220PWRG4 lies in its ability to efficiently charge batteries while ensuring safety and reliability. It incorporates advanced features to optimize the charging process and protect the battery from potential damage.

Packaging/Quantity

BQ26220PWRG4 is typically packaged in reels or tubes, containing a specified quantity of ICs per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 4.5V to 26V
• Charging Current Range: 100mA to 2A
• Operating Temperature Range: -40°C to 85°C
• Charging Efficiency: Up to 95%
• Overvoltage Protection Threshold: Adjustable
• Overcurrent Protection Threshold: Adjustable
• Battery Temperature Monitoring Range: -10°C to 60°C

Detailed Pin Configuration

1. VCC: Power supply input
2. GND: Ground reference
3. BAT: Battery connection
4. PROG: Programming pin for setting charging parameters
5. STAT: Status output pin
6. EN: Enable pin for controlling charging operation
7. TS: Battery temperature sense input
8. ISET: Charging current setting pin
9. VREF: Reference voltage output
10. ILIM: Overcurrent limit setting pin
11. VBAT: Battery voltage sense input
12. VSS: Ground reference
13. VCC: Power supply input
14. PGND: Ground reference for power stage
15. PGND: Ground reference for power stage
16. VCC: Power supply input

Functional Features

• Constant current and constant voltage charging modes
• Automatic detection of battery presence
• Thermal regulation to prevent overheating
• LED indication for charging status
• Programmable charging parameters
• Reverse polarity protection

Advantages and Disadvantages

Advantages

• High charging efficiency leads to reduced charging time
• Wide input voltage range allows compatibility with various power sources
• Advanced protection features ensure safe charging and battery longevity
• Compact package size enables easy integration into electronic devices

Disadvantages

• Limited charging current range may not be suitable for high-capacity batteries
• Temperature monitoring range may not cover extreme operating conditions

Working Principles

BQ26220PWRG4 operates based on a switching regulator topology, which efficiently converts the input voltage to a regulated charging voltage. It employs a feedback mechanism to maintain a constant charging current until the battery reaches its desired voltage level. The IC continuously monitors the battery's temperature and adjusts the charging parameters accordingly to prevent overheating or overcharging.

Detailed Application Field Plans

BQ26220PWRG4 finds applications in various fields, including: 1. Portable electronic devices (e.g., smartphones, tablets) 2. Wearable devices (e.g., smartwatches, fitness trackers) 3. Medical devices (e.g., portable medical monitors, insulin pumps) 4. Industrial equipment (e.g., handheld meters, wireless sensors) 5. Automotive electronics (e.g., electric vehicles, battery management systems)

Detailed and Complete Alternative Models

1. BQ24210PWRG4
2. BQ24075RGTR
3. MCP73871-2CCI/ML
4. LTC4054LES5-4.2
5. MAX1555EZK+T

These alternative models offer similar functionality and can be considered as substitutes for BQ26220PWRG4 in various battery charging applications.

Word count: 529 words