BQ24745RHDR

Product Overview

Category

BQ24745RHDR belongs to the category of battery charger ICs (Integrated Circuits).

Use

This IC is primarily used for charging and managing rechargeable batteries in various electronic devices.

Characteristics

• Efficient charging: BQ24745RHDR offers high-efficiency charging capabilities, ensuring optimal use of power.
• Advanced protection features: It incorporates multiple protection mechanisms to safeguard the battery and the device from overcharging, overvoltage, and overcurrent.
• Flexible charging profiles: The IC supports programmable charging profiles, allowing customization based on specific battery requirements.
• Wide input voltage range: It can operate with input voltages ranging from 3.6V to 24V, making it suitable for a wide range of applications.
• Compact package: BQ24745RHDR is available in a small outline package (SOIC) form factor, enabling space-efficient integration into electronic devices.
• RoHS compliant: The IC adheres to the Restriction of Hazardous Substances directive, ensuring environmental friendliness.

Package and Quantity

BQ24745RHDR is packaged in a 20-pin SOIC package. It is typically sold in reels containing 250 units per reel.

Specifications

• Input voltage range: 3.6V to 24V
• Charging voltage range: 3.6V to 24V
• Maximum charging current: 8A
• Operating temperature range: -40°C to +85°C
• Control interface: I2C

Detailed Pin Configuration

1. VDD: Power supply input
2. SDA: Serial data line for I2C communication
3. SCL: Serial clock line for I2C communication
4. TS: Temperature sense input
5. BAT: Battery voltage input
6. ACIN: AC adapter input voltage
7. ACOK: AC adapter presence indicator
8. PGND: Power ground
9. VSS: Ground reference for I2C communication
10. STAT: Charging status output
11. INT: Interrupt output
12. TS2: Temperature sense input 2
13. SRN: Serial resistor network connection
14. SRP: Serial resistor network connection
15. SRSET: Serial resistor network connection
16. SRCLK: Serial resistor network connection
17. SRDAT: Serial resistor network connection
18. SRPSEL: Serial resistor network connection
19. SRNSEL: Serial resistor network connection
20. VDD: Power supply input

Functional Features

1. Battery charging control: BQ24745RHDR provides precise control over the charging process, ensuring optimal battery performance and longevity.
2. Input power management: It efficiently manages the power input from the AC adapter, maximizing charging efficiency.
3. Charge termination: The IC automatically terminates the charging process when the battery reaches its full capacity, preventing overcharging.
4. Thermal regulation: BQ24745RHDR incorporates thermal regulation mechanisms to prevent overheating during charging.
5. Fault protection: It offers comprehensive fault protection features, including overvoltage, overcurrent, and short-circuit protection.

Advantages and Disadvantages

Advantages

• High charging efficiency
• Customizable charging profiles
• Comprehensive protection mechanisms
• Wide input voltage range
• Compact package size

Disadvantages

• Limited maximum charging current (8A)

Working Principles

BQ24745RHDR operates by regulating the charging current and voltage supplied to the battery. It continuously monitors the battery's voltage and temperature to ensure safe and efficient charging. The IC communicates with the system controller through the I2C interface, allowing for dynamic control and monitoring of the charging process.

Detailed Application Field Plans

BQ24745RHDR finds applications in various electronic devices that require rechargeable batteries, such as: - Laptops and notebooks - Tablets and smartphones - Portable gaming consoles - Power banks - Medical devices - Industrial equipment

Alternative Models

1. BQ24747RHDR: Similar to BQ24745RHDR with enhanced charging capabilities.
2. BQ24748RHDR: Higher current variant of BQ24745RHDR, supporting up to 12A charging current.

These alternative models offer similar functionality but may have different specifications or additional features.

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