BQ24001RGWR

Product Overview

Category

BQ24001RGWR belongs to the category of integrated circuits (ICs) specifically designed for battery charging applications.

Use

This IC is commonly used in portable electronic devices, such as smartphones, tablets, and wearable devices, to efficiently charge lithium-ion batteries.

Characteristics

• High charging efficiency
• Compact package size
• Low power consumption
• Overvoltage and overcurrent protection
• Temperature monitoring and thermal regulation

Package

BQ24001RGWR is available in a small outline package (SOP) with 20 pins. The package dimensions are 5mm x 6mm.

Essence

The essence of BQ24001RGWR lies in its ability to provide a reliable and efficient charging solution for lithium-ion batteries in portable electronic devices.

Packaging/Quantity

This IC is typically supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input voltage range: 4.35V - 6.45V
• Charging current range: 100mA - 1.5A
• Charge termination voltage: 4.2V ± 1%
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

1. VBUS: Input voltage from USB or external power source
2. GND: Ground reference
3. STAT: Status output indicating charging status
4. PG: Power good output indicating successful charging
5. TS: Temperature sense input for thermal regulation
6. EN: Enable pin to control charging operation
7. ISET: Charging current setting pin
8. BAT: Battery connection terminal
9. VSS: Negative supply voltage
10. VDD: Positive supply voltage
11. PROG: Programming pin for specific charging profiles
12. NTC: Negative temperature coefficient input for thermal regulation
13. VREF: Reference voltage output
14. SRN: Serial number input
15. SDA: I2C data line
16. SCL: I2C clock line
17. INT: Interrupt output
18. TS1: Temperature sense input for thermal regulation
19. TS2: Temperature sense input for thermal regulation
20. VBAT: Battery voltage monitoring input

Functional Features

• Constant current and constant voltage charging modes
• Charge termination based on battery voltage and temperature
• Automatic recharge initiation after charge termination
• Programmable charging current through ISET pin
• I2C interface for advanced control and monitoring capabilities
• Fault detection and protection mechanisms

Advantages and Disadvantages

Advantages

• High charging efficiency leads to faster charging times
• Compact package size allows for integration in space-constrained devices
• Low power consumption reduces energy waste
• Comprehensive protection features ensure safe charging operation
• I2C interface enables advanced control and monitoring capabilities

Disadvantages

• Limited charging current range may not be suitable for high-capacity batteries
• Requires external components for complete charging circuit implementation

Working Principles

BQ24001RGWR operates by regulating the charging current and voltage supplied to the lithium-ion battery. It employs a constant current charging mode until the battery voltage reaches the charge termination voltage. At this point, it switches to constant voltage mode to prevent overcharging. The IC continuously monitors the battery voltage and temperature to ensure safe and efficient charging.

Detailed Application Field Plans

BQ24001RGWR finds extensive application in various portable electronic devices, including: - Smartphones - Tablets - Wearable devices (smartwatches, fitness trackers) - Portable audio players - Handheld gaming consoles

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to BQ24001RGWR are: - MCP73831 - MAX1555 - LTC4054

These models offer similar functionality and can be suitable replacements depending on specific requirements.

In conclusion, BQ24001RGWR is a highly efficient and compact IC designed for charging lithium-ion batteries in portable electronic devices. Its comprehensive features, such as constant current and voltage modes, temperature monitoring, and fault protection, make it an ideal choice for various applications. However, its limited charging current range and external component requirement should be considered when selecting alternative models.