BQ24703PWRG4 - English Editing Encyclopedia Entry

Product Overview

Category

BQ24703PWRG4 belongs to the category of power management integrated circuits (PMICs).

Use

This PMIC is primarily used for managing power in portable electronic devices, such as smartphones, tablets, and laptops.

Characteristics

• BQ24703PWRG4 is a highly efficient and compact power management solution.
• It offers advanced features for battery charging, system power delivery, and protection.
• The PMIC integrates multiple functions into a single chip, reducing the overall size and complexity of the power management system.

Package

BQ24703PWRG4 is available in a small outline package (SOP) with 20 pins.

Essence

The essence of BQ24703PWRG4 lies in its ability to efficiently regulate and control power flow within portable electronic devices, ensuring optimal performance and safety.

Packaging/Quantity

This PMIC is typically packaged in reels or tubes, with each reel/tube containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 4.5V to 24V
• Output Voltage Range: 0V to 24V
• Maximum Charging Current: 8A
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 95%
• Protection Features: Overvoltage protection, overcurrent protection, thermal shutdown, short-circuit protection

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GND: Ground pin
3. ACOK: AC adapter present output pin
4. ACSTBY: AC adapter standby output pin
5. ACDET: AC adapter detection input pin
6. BAT: Battery voltage pin
7. TS: Temperature sense input pin
8. SRN: System reset output pin
9. SDA: I2C data input/output pin
10. SCL: I2C clock input pin
11. ILIM: Current limit setting pin
12. VREF: Reference voltage output pin
13. PGOOD: Power good output pin
14. CHG: Charging control output pin
15. SYS: System power output pin
16. INT: Interrupt output pin
17. TS1: Temperature sense input pin 1
18. TS2: Temperature sense input pin 2
19. TS3: Temperature sense input pin 3
20. TS4: Temperature sense input pin 4

Functional Features

• Battery charging with dynamic power management
• Input current and voltage regulation
• System power delivery and protection
• I2C communication interface for configuration and monitoring
• Fault detection and reporting
• Thermal management for safe operation

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption and longer battery life.
• Integration of multiple functions simplifies the overall power management system design.
• Comprehensive protection features ensure device and user safety.
• I2C interface allows for flexible configuration and monitoring.

Disadvantages

• Limited maximum charging current may not be suitable for high-power devices.
• Temperature sensing pins may require additional external components for accurate measurements.

Working Principles

BQ24703PWRG4 operates by regulating the flow of power between the input source (AC adapter) and the output (battery and system). It continuously monitors the input voltage, current, and temperature to optimize charging efficiency and protect against potential faults. The PMIC communicates with the system controller through the I2C interface, enabling dynamic power management and real-time monitoring.

Detailed Application Field Plans

BQ24703PWRG4 is widely used in various portable electronic devices, including: - Smartphones - Tablets - Laptops - Portable gaming consoles - Portable medical devices

Detailed and Complete Alternative Models

1. BQ24703RGRR: Similar to BQ24703PWRG4 but available in a different package (QFN).
2. BQ24705PWRG4: Upgraded version with higher maximum charging current (10A).
3. BQ24707PWRG4: Enhanced model with additional protection features and wider input voltage range.

These alternative models offer similar functionality and can be considered as replacements for BQ24703PWRG4 based on specific requirements and design considerations.

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