BQ2002SNTRG4

Product Overview

Category

BQ2002SNTRG4 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for battery charging applications.

Characteristics

• Integrated circuit designed for battery charging
• Offers various charging modes and protection features
• Efficient and reliable performance

Package

BQ2002SNTRG4 is available in a small outline transistor (SOT) package.

Essence

The essence of BQ2002SNTRG4 lies in its ability to efficiently charge batteries while providing necessary 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 26V
• Charging Current Range: 10mA to 1.5A
• Operating Temperature Range: -40°C to +85°C
• Number of Pins: 8
• Supply Voltage: 3.6V to 26V

Detailed Pin Configuration

1. VCC: Supply voltage input
2. GND: Ground reference
3. BAT: Battery connection
4. PROG: Programming pin for setting charging parameters
5. TS: Temperature sense input
6. STAT: Status output pin
7. TIMER: Timer control pin
8. VREF: Reference voltage output

Functional Features

• Multiple charging modes: BQ2002SNTRG4 supports constant current, constant voltage, and trickle charging modes.
• Overvoltage protection: The IC monitors the battery voltage and prevents it from exceeding safe limits.
• Overcurrent protection: It safeguards against excessive charging currents that could damage the battery.
• Temperature monitoring: The temperature sense input allows the IC to adjust charging parameters based on the battery's temperature.
• Timer control: BQ2002SNTRG4 includes a timer function to limit the charging duration.

Advantages and Disadvantages

Advantages

• Versatile charging modes for different battery types
• Comprehensive protection features ensure safe charging
• Compact package size allows for space-efficient designs
• Wide input voltage range enables compatibility with various power sources

Disadvantages

• Limited charging current range compared to some other ICs
• Requires external programming for specific charging parameters

Working Principles

BQ2002SNTRG4 operates based on a combination of constant current and constant voltage charging techniques. Initially, it supplies a constant current to the battery until a predefined voltage threshold is reached. At that point, it switches to a constant voltage mode to maintain the battery's voltage at the desired level. The IC continuously monitors the battery's status and adjusts the charging parameters accordingly.

Detailed Application Field Plans

BQ2002SNTRG4 finds applications in various fields, including: 1. Portable electronic devices: Used for charging batteries in smartphones, tablets, and portable gaming consoles. 2. Electric vehicles: Enables efficient charging of electric vehicle batteries. 3. Renewable energy systems: Suitable for charging batteries in solar-powered systems or wind energy storage applications. 4. Medical devices: Used in medical equipment that relies on rechargeable batteries.

Detailed and Complete Alternative Models

1. BQ2000SNTRG4: Similar functionality but with a lower charging current range.
2. BQ2004SNTRG4: Offers additional features such as battery authentication and fuel gauge functionality.
3. BQ2008SNTRG4: Supports higher charging currents and includes advanced thermal management capabilities.

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