TPS92074D

Product Overview

Category

The TPS92074D belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This IC is primarily used for driving high-power LEDs in lighting applications. It provides efficient control and regulation of LED current, ensuring optimal performance and energy efficiency.

Characteristics

• High efficiency: The TPS92074D offers high efficiency levels, minimizing power losses and maximizing energy savings.
• Dimming capabilities: It supports various dimming techniques, allowing for flexible control of LED brightness.
• Thermal protection: The IC incorporates thermal protection mechanisms to prevent overheating and ensure safe operation.
• Wide input voltage range: It can operate with a wide input voltage range, making it suitable for different power supply configurations.
• Compact package: The TPS92074D is available in a compact package, enabling space-saving designs.

Package and Quantity

The TPS92074D is typically packaged in a small outline integrated circuit (SOIC) package. It is commonly available in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Input voltage range: 8V to 60V
• Output current range: Up to 1A
• Dimming control: Analog/PWM
• Operating temperature range: -40°C to 125°C
• Package type: SOIC-8

Detailed Pin Configuration

The TPS92074D features an 8-pin SOIC package with the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. CS: Current sense input
4. DIM: Dimming control input
5. VCC: Supply voltage
6. FB: Feedback voltage
7. SW: Switch node
8. VOUT: Output voltage

Functional Features

• Constant current regulation: The TPS92074D ensures a stable and accurate LED current, regardless of input voltage variations.
• Dimming control: It supports both analog and pulse width modulation (PWM) dimming techniques, allowing for precise brightness adjustment.
• Over-temperature protection: The IC incorporates thermal shutdown mechanisms to prevent damage due to excessive heat.
• Soft-start functionality: It includes a soft-start feature that gradually ramps up the LED current, reducing inrush current and extending LED lifespan.

Advantages and Disadvantages

Advantages

• High efficiency leads to energy savings.
• Wide input voltage range enables versatile applications.
• Compact package allows for space-efficient designs.
• Supports various dimming techniques for flexible control.

Disadvantages

• Limited output current capability may not be suitable for high-power LED applications.
• Requires external components for operation, increasing system complexity.

Working Principles

The TPS92074D utilizes a buck converter topology to regulate the LED current. It converts the input voltage to a lower voltage level required by the LEDs while maintaining a constant current output. This is achieved through feedback control and pulse width modulation (PWM) techniques.

The IC continuously monitors the LED current through the current sense input (CS) pin and adjusts the duty cycle of the internal switch accordingly. By regulating the switch's on/off time, it maintains a constant current flow through the LEDs, ensuring consistent brightness.

Detailed Application Field Plans

The TPS92074D finds application in various lighting systems, including:

1. Residential lighting: It can be used in LED bulbs, downlights, and ceiling fixtures for energy-efficient home lighting solutions.
2. Commercial lighting: The IC is suitable for office lighting, retail displays, and architectural lighting applications.
3. Outdoor lighting: It can be employed in streetlights, parking lot lighting, and landscape illumination systems.
4. Automotive lighting: The TPS92074D can drive LEDs in automotive headlights, taillights, and interior lighting.

Detailed and Complete Alternative Models

1. TPS92075D: Similar to the TPS92074D, this IC offers higher output current capability, making it suitable for high-power LED applications.
2. TPS92076D: This alternative model provides additional features such as fault protection and diagnostic capabilities, enhancing system reliability and troubleshooting.

(Note: The above alternative models are fictional and provided for illustrative purposes only.)

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