CAT4002ATD-GT3

Product Overview

Category

CAT4002ATD-GT3 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in electronic devices for controlling and driving light-emitting diodes (LEDs).

Characteristics

• The CAT4002ATD-GT3 is a high-efficiency LED driver with a low dropout voltage.
• It is designed to provide constant current to LEDs, ensuring consistent brightness.
• This IC can drive up to 4 LEDs in series with a maximum output current of 25mA per channel.

Package

The CAT4002ATD-GT3 is available in a small outline transistor (SOT) package.

Essence

The essence of CAT4002ATD-GT3 lies in its ability to efficiently control and drive LEDs, enabling uniform illumination in various electronic applications.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 3000 units per reel.

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Current Range: Up to 25mA per channel
• Number of Channels: 4
• Dropout Voltage: 0.3V (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CAT4002ATD-GT3 has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. OUT1: LED channel 1 output
4. OUT2: LED channel 2 output
5. OUT3: LED channel 3 output
6. OUT4: LED channel 4 output
7. ISET: Current setting pin
8. EN: Enable pin

Functional Features

• Constant current output for precise LED brightness control.
• Low dropout voltage ensures efficient power utilization.
• Integrated thermal shutdown protection for enhanced reliability.
• Enable pin allows for easy on/off control of the LED driver.

Advantages and Disadvantages

Advantages

• High efficiency and low dropout voltage result in minimal power wastage.
• Precise current regulation ensures consistent LED brightness.
• Integrated thermal shutdown protection prevents damage due to excessive heat.
• Compact SOT package enables space-saving designs.

Disadvantages

• Limited output current per channel may not be suitable for high-power LED applications.
• Requires an external resistor for current setting, adding complexity to the circuit design.

Working Principles

The CAT4002ATD-GT3 operates by regulating the current flowing through the connected LEDs. It uses a feedback mechanism to maintain a constant current, regardless of variations in input voltage or LED characteristics. The enable pin allows for easy control of the LED driver's operation.

Detailed Application Field Plans

The CAT4002ATD-GT3 is widely used in various electronic devices that incorporate LEDs, such as:

1. Portable electronic devices (e.g., smartphones, tablets) for backlighting and indicator lights.
2. Automotive lighting systems for interior and exterior illumination.
3. General lighting applications, including decorative lighting and signage.
4. Industrial equipment and machinery for status indication and panel lighting.

Detailed and Complete Alternative Models

1. CAT4001ATD-GT3: Similar to CAT4002ATD-GT3 but with 2 channels instead of 4.
2. CAT4004ATD-GT3: Similar to CAT4002ATD-GT3 but with 8 channels for driving more LEDs simultaneously.
3. CAT4016ATD-GT3: LED driver with 16 channels, suitable for large-scale LED arrays.

These alternative models offer different channel configurations and are designed to cater to specific application requirements.

In conclusion, the CAT4002ATD-GT3 is a highly efficient LED driver IC that provides constant current regulation for up to 4 LEDs. Its compact size, thermal protection, and precise brightness control make it suitable for a wide range of electronic applications.