BQ24721CRHBR

Product Overview

Category

BQ24721CRHBR belongs to the category of battery charger ICs (Integrated Circuits).

Use

This product is primarily used for charging batteries in electronic devices such as laptops, tablets, and smartphones.

Characteristics

• High efficiency charging
• Wide input voltage range
• Multiple protection features
• Programmable charge current and voltage
• Compact package size

Package

BQ24721CRHBR is available in a small outline package (SOIC) with a heat sink pad.

Essence

The essence of BQ24721CRHBR lies in its ability to efficiently charge batteries while providing various programmable options and protection mechanisms.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 24V
• Charge Voltage Range: 3.6V to 24V
• Charge Current Range: 0A to 8A
• Operating Temperature Range: -40°C to +85°C
• Control Interface: I2C

Detailed Pin Configuration

1. VCC: Power supply input
2. SDA: I2C data line
3. SCL: I2C clock line
4. TS: Thermistor input for temperature monitoring
5. ACOK: AC adapter present indication
6. ACIN: AC adapter input
7. BAT: Battery connection
8. SRN: System reset output
9. INT: Interrupt output
10. PROCHOT: Thermal shutdown output
11. ILIM: Charge current limit programming
12. STAT: Charging status indication
13. DPMODE: Dynamic power management control
14. PGOOD: Power good indication
15. TS2: Second thermistor input
16. GND: Ground

Functional Features

• Dynamic Power Management (DPM) for efficient power delivery
• Programmable charge current and voltage settings
• Thermal regulation to prevent overheating
• Charge termination based on battery voltage and temperature
• Fault protection mechanisms for overvoltage, overcurrent, and short-circuit conditions

Advantages and Disadvantages

Advantages

• High charging efficiency leads to faster charging times
• Wide input voltage range allows compatibility with various power sources
• Multiple protection features ensure safe charging
• Programmable options provide flexibility for different battery types and charging scenarios

Disadvantages

• Requires an external microcontroller or system to control and monitor the charging process
• Limited availability of alternative models from other manufacturers

Working Principles

BQ24721CRHBR operates by regulating the charging current and voltage supplied to the battery. It continuously monitors the battery's voltage and temperature to determine the optimal charging parameters. The IC communicates with an external microcontroller or system through the I2C interface to receive commands and provide status updates.

Detailed Application Field Plans

BQ24721CRHBR is widely used in portable electronic devices such as laptops, tablets, smartphones, and power banks. It can be integrated into the device's power management system to provide efficient and reliable battery charging.

Detailed and Complete Alternative Models

While BQ24721CRHBR is a popular choice for battery charging applications, there are alternative models available from other manufacturers. Some notable alternatives include:

1. LTC4000-1 - Linear Technology
2. MAX8903A - Maxim Integrated
3. MCP73871 - Microchip Technology
4. TPS2513 - Texas Instruments

These alternative models offer similar functionality and can be considered based on specific application requirements.

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