TPS28225DRBT

Overview

Category: Integrated Circuits (ICs)

Use: Power Management

Characteristics: - High Efficiency - Low Quiescent Current - Wide Input Voltage Range - Adjustable Output Voltage - Overcurrent Protection - Thermal Shutdown Protection

Package: 8-WSON (3x3)

Essence: The TPS28225DRBT is a high-efficiency synchronous buck converter designed for power management applications.

Packaging/Quantity: The TPS28225DRBT is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to 5.5V
• Maximum Output Current: 2A
• Switching Frequency: 500kHz
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The TPS28225DRBT has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. EN: Enable pin
4. FB: Feedback pin
5. SS/TR: Soft-start/Tracking pin
6. PGND: Power ground
7. SW: Switch node
8. VOUT: Output voltage

Functional Features

• Integrated high-side and low-side MOSFETs
• Adaptive on-time control architecture
• Cycle-by-cycle current limit protection
• Thermal shutdown protection
• Adjustable soft-start time
• Power good indicator

Advantages

• High efficiency conversion
• Wide input voltage range allows for versatile applications
• Compact package size
• Overcurrent and thermal protection ensure safe operation
• Adjustable output voltage provides flexibility

Disadvantages

• Limited maximum output current (2A)
• Higher switching frequency may require additional filtering components

Working Principles

The TPS28225DRBT operates as a synchronous buck converter, converting a higher input voltage to a lower output voltage. It utilizes high-side and low-side MOSFETs to control the flow of current through an inductor, which stores energy during the on-time and releases it to the load during the off-time. The adaptive on-time control architecture adjusts the switching frequency based on the load requirements, optimizing efficiency.

Detailed Application Field Plans

The TPS28225DRBT is suitable for various power management applications, including but not limited to: - Industrial automation - Telecommunications equipment - Networking devices - Consumer electronics - Automotive systems

Alternative Models

1. TPS28225DRCR: 10-WSON (3x3) package, same specifications as TPS28225DRBT.
2. TPS28225DRCT: 8-SOIC package, same specifications as TPS28225DRBT.
3. TPS28225PWP: 20-HTSSOP package, same specifications as TPS28225DRBT.

These alternative models offer different package options while maintaining the same functionality and specifications as the TPS28225DRBT.

In conclusion, the TPS28225DRBT is a highly efficient synchronous buck converter with a wide input voltage range and adjustable output voltage. Its compact package and integrated protection features make it suitable for various power management applications. However, its limited maximum output current and higher switching frequency may require additional considerations in certain designs.