PS398CSEE

Product Overview

• Category: Electronic Component
• Use: Power Supply
• Characteristics:
  • High efficiency
  • Compact size
  • Wide input voltage range
• Package: TO-220
• Essence: Voltage Regulator
• Packaging/Quantity: Bulk packaging, 100 units per box

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage: Adjustable from 1.25V to 37V
• Output Current: Up to 3A
• Dropout Voltage: 1.5V (typical)
• Line Regulation: 0.01% (typical)
• Load Regulation: 0.1% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The PS398CSEE has three pins:

1. Input Pin (VIN): This pin is used to connect the input voltage source.
2. Output Pin (VOUT): This pin provides the regulated output voltage.
3. Ground Pin (GND): This pin is connected to the ground reference.

Functional Features

• Voltage Regulation: The PS398CSEE regulates the output voltage within a specified range, ensuring a stable power supply for connected devices.
• Current Limiting: It incorporates current limiting protection to prevent damage due to excessive current flow.
• Thermal Protection: The device includes thermal shutdown protection, which shuts off the regulator if the temperature exceeds a safe limit.
• Short Circuit Protection: It offers short circuit protection to safeguard against potential damage caused by a short circuit in the load.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power dissipation.
• Compact size allows for easy integration into various applications.
• Wide input voltage range makes it suitable for a wide range of power supply sources.

Disadvantages

• Dropout voltage of 1.5V may limit its use in low voltage applications.
• Limited output current capacity of up to 3A may not be sufficient for high-power devices.

Working Principles

The PS398CSEE is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage. The device operates by dissipating excess energy as heat, which is why it has a dropout voltage.

Detailed Application Field Plans

The PS398CSEE is commonly used in various electronic applications, including:

1. Power Supply Units: It can be used in power supply units to provide regulated voltage to different components.
2. Battery Chargers: The regulator ensures a stable charging voltage for batteries, preventing overcharging or undercharging.
3. Audio Amplifiers: It can be employed in audio amplifiers to regulate the voltage supplied to the amplifier circuitry.
4. LED Lighting: The PS398CSEE can be utilized in LED lighting systems to maintain a constant voltage for efficient operation.

Detailed and Complete Alternative Models

1. LM317: A popular alternative with similar specifications and pin configuration.
2. LT1084: Offers higher output current capability and lower dropout voltage compared to the PS398CSEE.
3. LM7805: Suitable for fixed 5V output applications, but with lower input voltage range.

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