BQ78412DDWT

Product Overview

Category

BQ78412DDWT belongs to the category of integrated circuits (ICs).

Use

This product is primarily used for battery management in various electronic devices.

Characteristics

• Integrated circuit for battery management
• High precision and accuracy
• Low power consumption
• Compact size
• Wide operating temperature range

Package

BQ78412DDWT is available in a small form factor package, suitable for surface mount technology (SMT) applications.

Essence

The essence of BQ78412DDWT lies in its ability to efficiently manage and monitor battery performance, ensuring optimal usage and longevity.

Packaging/Quantity

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

Specifications

• Input voltage range: 2.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Battery capacity measurement resolution: 1μVh
• Communication interface: I2C
• Number of pins: 20
• Dimensions: 4mm x 4mm

Detailed Pin Configuration

1. VSS - Ground
2. SDA - I2C Data Line
3. SCL - I2C Clock Line
4. ALERT - Interrupt Output
5. BAT - Battery Voltage Sense
6. TS - Temperature Sense
7. VCC - Power Supply
8. VSS - Ground
9. VSS - Ground
10. VSS - Ground
11. VSS - Ground
12. VSS - Ground
13. VSS - Ground
14. VSS - Ground
15. VSS - Ground
16. VSS - Ground
17. VSS - Ground
18. VSS - Ground
19. VSS - Ground
20. VSS - Ground

Functional Features

• Accurate battery voltage and temperature monitoring
• Real-time capacity estimation
• Overvoltage and undervoltage protection
• Overcurrent protection
• Temperature compensation for accurate measurements
• Communication interface for data retrieval and configuration

Advantages and Disadvantages

Advantages

• High precision and accuracy in battery management
• Compact size allows for integration into various devices
• Low power consumption prolongs battery life
• Wide operating temperature range enables usage in extreme conditions

Disadvantages

• Limited to I2C communication interface
• Requires additional external components for full battery management system implementation

Working Principles

BQ78412DDWT operates by continuously monitoring the battery voltage and temperature. It utilizes an internal algorithm to estimate the remaining capacity of the battery based on these measurements. The device also incorporates various protection mechanisms to prevent overvoltage, undervoltage, and overcurrent situations.

Detailed Application Field Plans

BQ78412DDWT finds applications in a wide range of electronic devices that rely on batteries for power. Some notable application fields include:

1. Portable consumer electronics (e.g., smartphones, tablets)
2. Wearable devices (e.g., smartwatches, fitness trackers)
3. Medical devices (e.g., portable monitors, insulin pumps)
4. Industrial equipment (e.g., handheld tools, measurement devices)
5. Automotive electronics (e.g., electric vehicles, hybrid vehicles)

Detailed and Complete Alternative Models

1. BQ78350-R1: Similar battery management IC with enhanced features and higher capacity measurement resolution.
2. BQ76952: Battery management IC specifically designed for multi-cell lithium-ion battery packs.
3. LTC6804: Integrated circuit for battery monitoring and balancing in high-voltage applications.

These alternative models offer similar functionalities to BQ78412DDWT and can be considered based on specific requirements and application scenarios.

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