BQ771817DPJR

Product Overview

Category

BQ771817DPJR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for battery management in various electronic devices.

Characteristics

• Efficient power management
• High accuracy voltage and current monitoring
• Advanced protection features
• Low power consumption

Package

BQ771817DPJR is available in a small form factor package, typically a 20-pin QFN (Quad Flat No-leads) package.

Essence

The essence of BQ771817DPJR lies in its ability to accurately monitor and manage battery parameters, ensuring optimal performance and safety.

Packaging/Quantity

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

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Battery Cell Voltage Measurement Range: 0V to 4.5V
• Current Measurement Range: ±3A
• Communication Interface: I2C

Detailed Pin Configuration

1. VDD: Power supply input
2. GND: Ground reference
3. SDA: I2C data line
4. SCL: I2C clock line
5. ALERT: Interrupt output
6. BAT: Battery cell voltage sense input
7. TS: Temperature sense input
8. VSS: Negative terminal of sense resistor
9. VDD: Positive terminal of sense resistor
10. VSS: Negative terminal of shunt resistor
11. VDD: Positive terminal of shunt resistor
12. VSS: Negative terminal of external NTC thermistor
13. VDD: Positive terminal of external NTC thermistor
14. VSS: Negative terminal of external PTC thermistor
15. VDD: Positive terminal of external PTC thermistor
16. VSS: Negative terminal of external temperature sensor
17. VDD: Positive terminal of external temperature sensor
18. VSS: Negative terminal of external voltage divider
19. VDD: Positive terminal of external voltage divider
20. VDD: Power supply input

Functional Features

• Accurate battery voltage and current monitoring
• Overvoltage and undervoltage protection
• Overcurrent protection
• Temperature monitoring and protection
• Communication interface for data exchange with the host system
• Configurable alert output for system notifications

Advantages and Disadvantages

Advantages

• High accuracy measurements ensure precise battery management
• Advanced protection features safeguard the battery and the device
• Low power consumption minimizes energy wastage
• Compact package size allows for integration in space-constrained designs

Disadvantages

• Limited operating temperature range may restrict certain applications
• Requires an external microcontroller or host system for full functionality

Working Principles

BQ771817DPJR operates by continuously monitoring the battery cell voltage, current, and temperature. It communicates with the host system through the I2C interface, providing real-time data and receiving commands for various battery management functions. The IC incorporates advanced algorithms to detect and respond to abnormal conditions, ensuring the safe and efficient operation of the battery.

Detailed Application Field Plans

BQ771817DPJR finds applications in a wide range of electronic devices that utilize rechargeable batteries. Some common application fields include: - Portable consumer electronics (smartphones, tablets, laptops) - Wearable devices (smartwatches, fitness trackers) - Electric vehicles and hybrid electric vehicles - Energy storage systems

Detailed and Complete Alternative Models

1. BQ771816DPJR
2. BQ771818DPJR
3. BQ771819DPJR
4. BQ771820DPJR

These alternative models offer similar functionality and features, with slight variations in specifications and pin configurations. It is recommended to refer to the respective datasheets for detailed information on each model.

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