TPS2057DR

Overview

Category: Integrated Circuits (ICs)

Use: Power Distribution Switches

Characteristics: - High Current Limit - Low On-Resistance - Fast Overcurrent Response - Adjustable Current Limit - Thermal Shutdown Protection - Reverse Current Blocking - Controlled Rise Time - Undervoltage Lockout

Package: SOIC (Small Outline Integrated Circuit)

Essence: TPS2057DR is a power distribution switch designed to provide protection and control in various applications.

Packaging/Quantity: TPS2057DR is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Voltage Range: 2.7V to 5.5V
• Current Limit Range: 500mA to 3A
• Operating Temperature Range: -40°C to +85°C
• On-Resistance: 50mΩ (typical)
• Quiescent Supply Current: 1µA (typical)
• Shutdown Supply Current: 0.1µA (typical)

Pin Configuration

The TPS2057DR package consists of 8 pins:

1. EN (Enable)
2. IN (Input Voltage)
3. GND (Ground)
4. OUT (Output Voltage)
5. FLT (Fault Indicator)
6. ILIM (Current Limit Setting)
7. NC (No Connection)
8. VIN (Input Voltage Sense)

Functional Features

1. High Current Limit: The TPS2057DR can handle high current loads up to 3A.
2. Low On-Resistance: It offers low resistance to minimize voltage drops across the switch.
3. Fast Overcurrent Response: The device quickly responds to overcurrent conditions, protecting the circuit.
4. Adjustable Current Limit: The current limit can be adjusted using an external resistor.
5. Thermal Shutdown Protection: It incorporates thermal shutdown to prevent overheating.
6. Reverse Current Blocking: The switch prevents reverse current flow, protecting the power source.
7. Controlled Rise Time: It ensures controlled and smooth voltage rise during power-up.
8. Undervoltage Lockout: The TPS2057DR disables the switch when the input voltage falls below a certain threshold.

Advantages and Disadvantages

Advantages: - High current handling capability - Low resistance for minimal voltage drops - Fast response to overcurrent conditions - Adjustable current limit for flexibility - Thermal shutdown protection for safety - Reverse current blocking to protect the power source - Controlled rise time for smooth power-up - Undervoltage lockout feature

Disadvantages: - Limited to a maximum current limit of 3A - Requires an external resistor for current limit adjustment

Working Principles

The TPS2057DR is a power distribution switch that controls the flow of current in a circuit. When the enable pin (EN) is high, the switch is turned on, allowing current to flow from the input (IN) to the output (OUT). The current limit can be adjusted using the ILIM pin and an external resistor. If the current exceeds the set limit or an overcurrent condition occurs, the device quickly shuts off the switch to protect the circuit. It also incorporates thermal shutdown to prevent overheating.

Detailed Application Field Plans

The TPS2057DR is widely used in various applications where power distribution and protection are required. Some common application fields include:

1. Portable Devices: It is suitable for smartphones, tablets, and other portable electronic devices to control power supply and protect against overcurrent.
2. Industrial Control Systems: The TPS2057DR can be used in industrial control systems to distribute power and provide protection for sensitive components.
3. Automotive Electronics: It finds application in automotive electronics, such as infotainment systems and lighting controls, to ensure proper power distribution and protect against faults.
4. Computer Peripherals: The device can be utilized in computer peripherals like USB hubs and external hard drives to manage power distribution and prevent damage due to overcurrent.

Detailed and Complete Alternative Models

1. TPS2058DR: Similar to TPS2057DR but with a higher current limit of 5A.
2. TPS2060DR: A power distribution switch with adjustable current limit and reverse current blocking feature.
3. TPS2070DR: Integrated circuit with multiple power distribution switches and fault indicators.
4. TPS22810DR: Power distribution switch with low on-resistance and thermal shutdown protection.

These alternative models offer similar functionality and can be considered based on specific requirements and current handling capabilities.

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