TPS2087DG4

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Power Distribution Switch
• Characteristics: High Current Limit, Overtemperature Protection, Low Quiescent Current
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Efficient and Reliable Power Distribution Solution
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0V to Vcc
• Continuous Current Limit: 2.8A
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 20µA (typical)

Detailed Pin Configuration

The TPS2087DG4 has a total of 8 pins:

1. EN (Enable): Controls the power switch operation.
2. IN (Input): Connects to the input voltage source.
3. GND (Ground): Common ground reference.
4. PG (Power Good): Indicates the output voltage is within regulation limits.
5. OUT (Output): Connects to the load.
6. FB (Feedback): Provides feedback for voltage regulation.
7. SS (Soft Start): Controls the soft start time.
8. ILIM (Current Limit): Sets the current limit threshold.

Functional Features

• Overcurrent Protection: Automatically shuts off the power switch when the current exceeds the set limit.
• Thermal Shutdown Protection: Prevents damage due to excessive temperature by disabling the power switch.
• Soft Start: Gradually ramps up the output voltage to prevent inrush current.
• Power Good Indicator: Signals when the output voltage is within the desired range.

Advantages and Disadvantages

Advantages: - High current limit allows for powering demanding loads. - Overtemperature protection ensures safe operation. - Low quiescent current minimizes power consumption.

Disadvantages: - Limited input voltage range (2.7V to 5.5V). - Maximum continuous current limit may not be sufficient for certain applications.

Working Principles

The TPS2087DG4 is a power distribution switch that controls the flow of current from the input to the output. It utilizes a MOSFET as a power switch, which can be enabled or disabled using the EN pin. The FB pin provides feedback to regulate the output voltage. The ILIM pin sets the current limit threshold, protecting the circuit from excessive current. The SS pin controls the soft start time, gradually increasing the output voltage to prevent inrush current. The PG pin indicates when the output voltage is within regulation limits.

Detailed Application Field Plans

The TPS2087DG4 is commonly used in various applications, including:

1. USB Power Distribution: Provides power switching and protection for USB ports.
2. Battery-Powered Devices: Controls power distribution in portable electronic devices.
3. Industrial Automation: Enables efficient power management in industrial control systems.
4. Automotive Electronics: Safely distributes power in automotive applications.
5. Consumer Electronics: Used in TVs, gaming consoles, and other consumer devices.

Detailed and Complete Alternative Models

1. TPS2051: Similar power distribution switch with a lower current limit.
2. TPS2066: Power distribution switch with additional features like reverse current protection.
3. TPS22920: Load switch with integrated power sequencing capabilities.

These alternative models offer different specifications and features, allowing users to choose the most suitable option for their specific requirements.

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