LTC4066EUF#PBF

Product Overview

Category

LTC4066EUF#PBF belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for battery charging applications.

Characteristics

• Integrated circuit
• Battery charger
• Small form factor (package: LTC4066EUF)
• High efficiency
• Wide input voltage range
• Multiple charging modes
• Overvoltage protection
• Thermal shutdown protection

Package and Quantity

The LTC4066EUF#PBF is available in a small 16-pin QFN package. It is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4V to 40V
• Charging Current Range: 10mA to 2A
• Charge Termination Options: C/10, C/20, C/40, or Timer
• Maximum Float Voltage: 4.2V
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LTC4066EUF#PBF has a total of 16 pins, which are assigned specific functions as follows:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VBAT: Battery voltage pin
4. PROG: Programming pin for charge termination options
5. TIMER: Timer programming pin
6. STAT: Status output pin
7. CE: Charge enable pin
8. ISET: Current limit programming pin
9. TS: Thermal shutdown pin
10. VFB: Feedback voltage pin
11. ILIM: Current limit pin
12. SCL: Serial clock pin
13. SDA: Serial data pin
14. INTVCC: Internal voltage supply pin
15. INTVSS: Internal ground pin
16. VCC: Power supply pin

Functional Features

• Wide input voltage range allows for versatile applications.
• Multiple charging modes provide flexibility in charge termination options.
• Overvoltage protection ensures safe charging of the battery.
• Thermal shutdown protection prevents damage due to excessive heat.

Advantages and Disadvantages

Advantages

• High efficiency charging
• Compact form factor
• Wide input voltage range
• Multiple charging modes for flexibility
• Overvoltage and thermal protection for safety

Disadvantages

• Limited charging current range (10mA to 2A)
• Requires external programming for charge termination options

Working Principles

The LTC4066EUF#PBF is a battery charger IC that operates by regulating the charging current and voltage to the connected battery. It uses a combination of control circuitry, feedback mechanisms, and protection features to ensure efficient and safe charging.

When an input voltage is applied to the VIN pin, the LTC4066EUF#PBF regulates the charging current based on the programmed settings. The charge termination can be set using the PROG pin or the TIMER pin, allowing for different termination options such as C/10, C/20, C/40, or a timer-based termination.

During the charging process, the LTC4066EUF#PBF monitors the battery voltage through the VFB pin and adjusts the charging current accordingly. It also provides status information through the STAT pin, indicating the charging state.

To ensure safety, the LTC4066EUF#PBF incorporates overvoltage protection, which prevents the battery from being charged beyond its maximum float voltage. Additionally, it includes thermal shutdown protection, which shuts down the charging process if the temperature exceeds a certain threshold.

Detailed Application Field Plans

The LTC4066EUF#PBF is widely used in various battery charging applications, including but not limited to: - Portable electronic devices - Battery-powered medical devices - Industrial equipment - Automotive applications - Solar-powered systems

Its compact form factor, wide input voltage range, and multiple charging modes make it suitable for a diverse range of applications.

Detailed and Complete Alternative Models

Some alternative models to the LTC4066EUF#PBF that offer similar functionality include: - MCP73831 - MAX1555 - BQ24075

These alternatives can be considered based on specific requirements and design constraints.

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