BQ2002CSN

Product Overview

Category

BQ2002CSN belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for battery charging applications.

Characteristics

• BQ2002CSN is a high-performance, single-chip NiCd/NiMH battery charger.
• It offers fast and efficient charging capabilities.
• The IC is designed to provide accurate and reliable charging control.
• It supports both constant current and constant voltage charging modes.
• BQ2002CSN includes various safety features to protect the battery from overcharging and overheating.

Package

The BQ2002CSN IC is available in a standard 16-pin plastic dual in-line package (PDIP).

Essence

The essence of BQ2002CSN lies in its ability to efficiently charge NiCd and NiMH batteries while ensuring safety and reliability.

Packaging/Quantity

BQ2002CSN is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 4.5V to 10V
• Charging Current Range: 50mA to 1.5A
• Charging Voltage Range: 0V to 20V
• Operating Temperature Range: -40°C to +85°C
• Integrated Safety Features: Overcharge protection, thermal shutdown, short-circuit protection

Detailed Pin Configuration

The BQ2002CSN IC has a total of 16 pins. Here is the detailed pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. BAT: Battery connection
4. TS: Temperature sense input
5. PROG: Programming pin for setting charging parameters
6. VREF: Reference voltage output
7. ISET: Current set pin
8. VSET: Voltage set pin
9. VSS: Negative supply voltage
10. VDD: Positive supply voltage
11. NC: No connection
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

• Constant current and constant voltage charging modes
• Automatic detection of battery type (NiCd or NiMH)
• Temperature sensing for thermal management
• Programmable charging parameters
• LED status indicators for charging progress
• Safety features to prevent overcharging, overheating, and short-circuits

Advantages and Disadvantages

Advantages

• Efficient and reliable charging performance
• Integrated safety features protect the battery
• Flexible programming options for different battery types
• Wide input voltage range allows compatibility with various power sources

Disadvantages

• Limited to NiCd and NiMH battery charging applications
• Requires external components for complete charging circuit implementation

Working Principles

BQ2002CSN operates based on a combination of constant current and constant voltage charging techniques. It automatically detects the connected battery type and adjusts the charging parameters accordingly. The IC monitors the battery voltage, current, and temperature to ensure safe and optimal charging. It employs a feedback control mechanism to regulate the charging process and prevent overcharging or overheating.

Detailed Application Field Plans

BQ2002CSN finds extensive use in various battery-powered devices and systems, including: - Portable electronic devices (e.g., smartphones, tablets) - Cordless power tools - Electric vehicles - Emergency backup power systems - Renewable energy storage systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to BQ2002CSN are: - BQ2000SN: Single-chip NiCd/NiMH battery charger with lower charging current range. - BQ2004SN: Single-chip NiCd/NiMH battery charger with higher charging current range and additional features. - BQ2008SN: Multi-cell NiCd/NiMH battery charger for applications requiring charging of multiple batteries simultaneously.

These alternative models provide options with varying specifications to suit different charging requirements.

In conclusion, BQ2002CSN is a high-performance integrated circuit designed for efficient and reliable charging of NiCd and NiMH batteries. Its safety features, flexible programming options, and wide application field make it a popular choice in the industry.

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