TPS2074DB

Overview

Category: Integrated Circuit (IC)

Use: Power Distribution Switch

Characteristics: - High-side power switch - Overcurrent protection - Thermal shutdown protection - Undervoltage lockout - Controlled rise time and fall time - Fault reporting via I2C interface

Package: SSOP (Shrink Small Outline Package)

Essence: TPS2074DB is a power distribution switch designed for high-side load switching applications. It provides overcurrent and thermal protection, as well as fault reporting capabilities through an I2C interface.

Packaging/Quantity: TPS2074DB is available in a SSOP package. The quantity per package may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0V to VCC
• Continuous Current Limit: 500mA
• Operating Temperature Range: -40°C to +85°C
• Control Interface: I2C

Pin Configuration

The TPS2074DB has the following pin configuration:

1. EN (Enable)
2. FAULT (Fault Indicator)
3. SDA (I2C Data)
4. SCL (I2C Clock)
5. GND (Ground)
6. OUT (Output)
7. IN (Input)
8. VCC (Supply Voltage)

Functional Features

• High-side power switch with integrated protection features
• Overcurrent protection prevents damage to the load and the switch itself
• Thermal shutdown protection shuts off the switch when the temperature exceeds a safe threshold
• Undervoltage lockout ensures proper operation even at low input voltages
• Controlled rise time and fall time minimize voltage transients during switching
• Fault reporting via I2C interface allows for easy monitoring and diagnostics

Advantages and Disadvantages

Advantages: - Integrated protection features provide enhanced reliability - I2C interface enables easy monitoring and control - Controlled rise time and fall time minimize voltage transients - Wide input voltage range allows for versatile applications

Disadvantages: - Limited continuous current limit of 500mA may not be suitable for high-power applications - SSOP package may require specialized equipment for soldering and handling

Working Principles

The TPS2074DB is a high-side power switch that controls the distribution of power to a load. It operates by monitoring the input voltage and current, and providing overcurrent and thermal protection. The switch can be enabled or disabled through the EN pin, and fault conditions are reported via the I2C interface.

When the input voltage exceeds the undervoltage lockout threshold, the TPS2074DB turns on and allows current to flow from the input to the output. If the current exceeds the set limit, the overcurrent protection activates and shuts off the switch to protect the load and the switch itself. Additionally, if the temperature rises above a safe threshold, the thermal shutdown protection triggers and disables the switch until the temperature decreases.

The I2C interface allows for communication with the TPS2074DB, enabling fault monitoring and reporting. This feature provides valuable information for diagnostics and troubleshooting.

Detailed Application Field Plans

The TPS2074DB is commonly used in various applications where power distribution and protection are required. Some examples include:

1. USB Power Distribution: The TPS2074DB can be used in USB hubs or docking stations to control the power supply to individual ports. Its overcurrent protection ensures safe operation and prevents damage to connected devices.

2. Battery-Powered Devices: In portable electronic devices, such as smartphones or tablets, the TPS2074DB can be utilized to control the power supply to different components. Its thermal shutdown protection prevents overheating and enhances the overall safety of the device.

3. Industrial Automation: The TPS2074DB can be employed in industrial automation systems to control power distribution to various modules or subsystems. Its fault reporting capabilities enable easy monitoring and diagnostics, improving system reliability.

Detailed and Complete Alternative Models

1. TPS2075DB: Similar to TPS2074DB, but with a higher continuous current limit of 1A.
2. TPS2076DB: Provides additional features such as reverse current protection and adjustable current limit.
3. TPS2077DB: Offers enhanced ESD protection and wider input voltage range.

These alternative models provide similar functionality to the TPS2074DB but may have different specifications or additional features to suit specific application requirements.

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