TPS2551DBVT

Product Overview

Category

The TPS2551DBVT belongs to the category of power management integrated circuits (PMICs).

Use

It is primarily used for power distribution and protection in electronic systems.

Characteristics

• Provides overcurrent protection and load switching capabilities.
• Offers adjustable current limit and undervoltage lockout features.
• Operates with a wide input voltage range.
• Supports low-power shutdown mode.
• Features thermal shutdown protection.

Package

The TPS2551DBVT is available in a small SOT-23 package.

Essence

The essence of the TPS2551DBVT lies in its ability to efficiently manage power distribution and protect electronic systems from overcurrent conditions.

Packaging/Quantity

The TPS2551DBVT is typically packaged in reels, with 3000 units per reel.

Specifications

• Input Voltage Range: 2.7V to 6.5V
• Adjustable Current Limit Range: 100mA to 500mA
• Quiescent Current: 10µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Thermal Shutdown Temperature: 150°C

Detailed Pin Configuration

The TPS2551DBVT has the following pin configuration:

1. EN (Enable) - Enable pin for load switch control.
2. IN (Input) - Power input pin.
3. GND (Ground) - Ground reference pin.
4. OUT (Output) - Power output pin.

Functional Features

• Overcurrent Protection: The TPS2551DBVT monitors the output current and shuts off the load switch if it exceeds the set current limit.
• Load Switch Control: The enable pin allows for easy control of the load switch, enabling or disabling power flow to the output.
• Undervoltage Lockout: The device ensures that the output voltage remains above a certain threshold to prevent system instability.
• Low-Power Shutdown Mode: The TPS2551DBVT can be put into a low-power shutdown mode to minimize power consumption when not in use.
• Thermal Shutdown Protection: In case of excessive temperature, the device shuts down to prevent damage.

Advantages and Disadvantages

Advantages

• Efficient power distribution and protection.
• Adjustable current limit for flexibility.
• Wide input voltage range for compatibility.
• Small package size for space-constrained applications.
• Thermal shutdown protection for enhanced safety.

Disadvantages

• Limited current limit range (100mA to 500mA).
• Requires external components for complete functionality.

Working Principles

The TPS2551DBVT operates by monitoring the output current flowing through the load switch. If the current exceeds the set limit, the device quickly shuts off the load switch to protect the system from overcurrent conditions. It also provides undervoltage lockout to ensure stable operation and thermal shutdown protection to prevent overheating.

Detailed Application Field Plans

The TPS2551DBVT finds applications in various electronic systems, including:

1. Portable Devices: It can be used to control power distribution and protect battery-powered portable devices from overcurrent situations.
2. IoT Devices: The TPS2551DBVT is suitable for managing power supply and safeguarding IoT devices from excessive current flow.
3. Automotive Electronics: It can be employed in automotive systems to regulate power distribution and prevent damage due to overcurrent events.
4. Industrial Control Systems: The TPS2551DBVT is useful in industrial control systems where efficient power management and protection are crucial.

Detailed and Complete Alternative Models

1. TPS2552DBVR: Similar to TPS2551DBVT but with a different pin configuration.
2. TPS2553DBVR: Offers additional features such as reverse current protection.
3. TPS2554DBVR: Provides higher current limit range (up to 1A) for applications requiring more power.

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

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