BQ24703PWG4

Product Overview

Category

BQ24703PWG4 belongs to the category of power management integrated circuits (PMICs).

Use

This PMIC is primarily used for battery charging and system power management in portable electronic devices.

Characteristics

• Efficient power conversion and management capabilities
• High level of integration
• Compact package size
• Wide input voltage range
• Multiple protection features

Package

BQ24703PWG4 is available in a small outline, 20-pin TSSOP package.

Essence

The essence of BQ24703PWG4 lies in its ability to efficiently manage power flow between the power source and the battery, ensuring optimal charging and power delivery to the system.

Packaging/Quantity

This PMIC is typically sold in reels, with 250 units per reel.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 2.5V to 25.2V
• Charging Current Range: Up to 8A
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 95%

Detailed Pin Configuration

1. ACIN: Input voltage from the power source
2. TS: Thermistor input for temperature monitoring
3. BAT: Battery voltage sense input
4. SRN: System reset output
5. SDA: I2C data line
6. SCL: I2C clock line
7. INT: Interrupt output
8. VREF: Reference voltage output
9. PROCHOT: Processor hot signal input
10. ILIM: Charging current limit setting
11. STAT: Status output
12. CE: Charger enable control input
13. SBS: System battery status input
14. SDA2: Second I2C data line
15. SCL2: Second I2C clock line
16. VSS: Ground
17. VDD: Power supply voltage
18. VCC: Power supply voltage for I2C interface
19. TS2: Second thermistor input
20. SRP: System reset input

Functional Features

• Dynamic power path management
• Battery charging with thermal regulation
• Input current and voltage regulation
• Charge termination and safety timers
• System power monitoring and control
• I2C communication interface for configuration and status monitoring

Advantages and Disadvantages

Advantages

• Efficient power conversion and management
• Wide input voltage range allows compatibility with various power sources
• Multiple protection features ensure safe charging and operation
• Compact package size enables space-saving designs

Disadvantages

• Limited charging current compared to some high-power devices
• Requires external components for complete system integration

Working Principles

BQ24703PWG4 operates by regulating the flow of power between the input source, battery, and system. It dynamically manages the power path to prioritize charging the battery while simultaneously powering the system. The PMIC monitors various parameters such as input voltage, battery voltage, and temperature to optimize charging efficiency and protect against overcharging or overheating.

Detailed Application Field Plans

BQ24703PWG4 finds applications in a wide range of portable electronic devices, including: - Laptops - Tablets - Smartphones - Portable gaming consoles - Portable medical devices - Portable audio/video players

Detailed and Complete Alternative Models

1. BQ24725RGRR
2. BQ24727RGRR
3. BQ24735RGRR
4. BQ24738RGRR
5. BQ24745RGRR
6. BQ24747RGRR
7. BQ24751RGRR
8. BQ24753RGRR
9. BQ24770RGRR
10. BQ24780SRGRR

These alternative models offer similar functionality and can be considered as alternatives to BQ24703PWG4 based on specific application requirements.

In conclusion, BQ24703PWG4 is a power management integrated circuit designed for efficient battery charging and system power management in portable electronic devices. Its compact size, wide input voltage range, and multiple protection features make it suitable for various applications. While it has some limitations in terms of charging current and external component requirements, it offers significant advantages in power conversion efficiency and integration.