BQ24705RGER

Product Overview

Category

BQ24705RGER 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 and reliable battery charging
• Integrated system power management
• Compact package size
• Wide input voltage range
• High charging efficiency
• Overvoltage and overcurrent protection

Package

BQ24705RGER is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of BQ24705RGER lies in its ability to efficiently manage battery charging and provide stable power supply to the system, ensuring optimal performance and safety.

Packaging/Quantity

This PMIC is typically packaged in reels, with each reel containing a specific quantity of BQ24705RGER units. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Input Voltage Range: 4.5V to 24V
• Output Voltage Range: 3.3V to 25.2V
• Charging Current Range: Up to 8A
• Operating Temperature Range: -40°C to 85°C
• Control Interface: I2C

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. ACOK: AC adapter present status output pin
4. ACSEL: AC adapter selection input pin
5. TS: Thermistor input pin for temperature monitoring
6. SDA: I2C data line
7. SCL: I2C clock line
8. BAT: Battery voltage sense pin
9. VCC: Power supply for internal circuitry
10. CHG: Charge enable control pin
11. STAT: Charging status output pin
12. PG: Power good output pin
13. TS2: Second thermistor input pin (optional)
14. VREF: Reference voltage output pin
15. SRN: Serial resistor network connection pin
16. SRP: Serial resistor network connection pin

Functional Features

1. Battery Charging:

   • Constant current (CC) charging mode
   • Constant voltage (CV) charging mode
   • Pre-charge and termination timers
   • Charge enable control

2. System Power Management:

   • Dynamic power path management
   • Input source selection
   • Output voltage regulation
   • Overvoltage and overcurrent protection

3. Temperature Monitoring:

   • Thermistor inputs for accurate temperature sensing
   • Thermal regulation and protection mechanisms

Advantages and Disadvantages

Advantages

• Efficient battery charging with CC and CV modes
• Integrated power management for system stability
• Wide input voltage range allows compatibility with various power sources
• Comprehensive protection features ensure safety
• Compact package size enables space-saving designs

Disadvantages

• Limited charging current compared to some high-power devices
• Requires external thermistors for accurate temperature monitoring

Working Principles

BQ24705RGER operates by regulating the charging process and managing the power supply to the system. It utilizes a combination of constant current and constant voltage charging modes to efficiently charge the battery. The PMIC also incorporates dynamic power path management, allowing simultaneous charging and system operation. Various protection mechanisms, such as overvoltage and overcurrent protection, ensure safe operation.

Detailed Application Field Plans

BQ24705RGER finds applications in a wide range of portable electronic devices, including but not limited to: - Laptops and notebooks - Tablets and smartphones - Portable gaming consoles - Digital cameras and camcorders - Portable medical devices - Handheld communication devices

Detailed and Complete Alternative Models

1. BQ24707RGER
2. BQ24717RGER
3. BQ24725RGER
4. BQ24727RGER
5. BQ24735RGER

These alternative models offer similar functionality and features, providing options for different design requirements.

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