BQ24751RHDT - English Editing Encyclopedia Entry

Product Overview

Category

The BQ24751RHDT 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

• The BQ24751RHDT offers high efficiency and accurate control over the charging process.
• It supports multiple battery chemistries, including lithium-ion, lithium-polymer, and nickel-based batteries.
• This PMIC provides protection features such as overvoltage, overcurrent, and overtemperature protection.
• It supports a wide input voltage range, making it suitable for various power sources.

Package

The BQ24751RHDT is available in a small outline package (SOP) with 20 pins.

Essence

The essence of the BQ24751RHDT lies in its ability to efficiently manage battery charging and power delivery in portable electronic devices.

Packaging/Quantity

This PMIC is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

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
• Efficiency: Up to 95%
• Battery Chemistry Support: Li-Ion, Li-Polymer, NiMH, NiCd

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. ACOK: AC adapter present output
4. ACST: AC adapter status input
5. TS: Thermistor input for temperature monitoring
6. BAT: Battery voltage sense input
7. SRN: System reset output
8. SDA: I2C data input/output
9. SCL: I2C clock input
10. INT: Interrupt output
11. ILIM: Charging current limit programming pin
12. TS1: Thermistor 1 input for temperature monitoring
13. TS2: Thermistor 2 input for temperature monitoring
14. VSS: Ground pin
15. VDD: Power supply pin
16. BATFET: Battery FET control output
17. SRP: System reset programming pin
18. SRN: System reset output
19. VREF: Reference voltage output
20. VSS: Ground pin

Functional Features

• Dynamic Power Management: The BQ24751RHDT adjusts the charging current and voltage based on the battery's state of charge, optimizing power delivery.
• Input Current Limiting: This PMIC regulates the input current to prevent overloading the power source.
• Charge Termination: It automatically stops charging when the battery reaches its full capacity, preventing overcharging.
• Thermal Regulation: The BQ24751RHDT monitors the temperature and adjusts the charging parameters to prevent overheating.
• I2C Communication: It supports communication through the I2C interface, allowing for configuration and monitoring.

Advantages and Disadvantages

Advantages

• High efficiency charging process
• Wide input voltage range
• Multiple battery chemistry support
• Comprehensive protection features
• Compact package size

Disadvantages

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

Working Principles

The BQ24751RHDT operates by regulating the charging current and voltage supplied to the battery. It continuously monitors the battery's state of charge and adjusts the charging parameters accordingly. The PMIC also ensures the safety of the charging process by implementing various protection mechanisms such as overvoltage, overcurrent, and overtemperature protection.

Detailed Application Field Plans

The BQ24751RHDT is widely used in portable electronic devices such as smartphones, tablets, laptops, and handheld gaming consoles. It finds applications in various industries including consumer electronics, telecommunications, and automotive.

Detailed and Complete Alternative Models

• BQ24753RHDT
• BQ24757RHDT
• BQ24758RHDT
• BQ24759RHDT

These alternative models offer similar functionality and features to the BQ24751RHDT, with slight variations in specifications and pin configurations.

In conclusion, the BQ24751RHDT is a highly efficient power management integrated circuit designed for battery charging and system power management in portable electronic devices. With its versatile features and comprehensive protection mechanisms, it serves as a reliable solution for managing power delivery in various applications.