The SPX1587AT-1.5 is a 7 Amp adjustable positive voltage regulator manufactured by Sipex Corporation (now part of Exar Corporation). It's designed to provide a stable and regulated output voltage with a low dropout voltage, making it suitable for various power supply applications.

Applications

• Microprocessor Power Supplies: Used to regulate the voltage for microprocessors and digital circuits.
• Post Regulators for Switching Supplies: Functions as a post-regulator to improve the output voltage accuracy of switching power supplies.
• Battery Chargers: Employed in battery charging circuits to provide a regulated charging voltage.
• Constant Current Regulators: Can be configured as a constant current source for LED drivers and other applications.

Features

• Adjustable Output Voltage: The output voltage can be adjusted using external resistors.
• 7 Amp Output Current: Capable of delivering up to 7 Amps of output current.
• Low Dropout Voltage: Maintains regulation with a small difference between input and output voltage.
• Internal Thermal Overload Protection: Protects the regulator from overheating.
• Current Limiting: Prevents excessive current flow, protecting the regulator and load.
• Reverse Battery Protection: Prevents damage from reverse polarity connection.

Benefits

• Stable Output Voltage: Provides a stable and regulated output voltage, ensuring reliable operation of the load.
• High Current Capability: Can supply power to high-current loads.
• Efficient Operation: Low dropout voltage minimizes power dissipation.
• Robust Protection: Internal protection features ensure reliable operation in harsh environments.
• Flexible Adjustment: Adjustable output voltage allows for customization to specific application requirements.

Additional Details

The SPX1587AT-1.5 is designed for ease of use, requiring only a few external components for operation. The output voltage can be adjusted by using a resistor divider network. The low dropout voltage allows the regulator to operate with a small input-to-output voltage differential, increasing efficiency and extending battery life in portable applications. The internal thermal overload protection and current limiting features provide robust protection against over-temperature and over-current conditions, enhancing the reliability and longevity of the regulator. The reverse battery protection prevents damage to the regulator if the input voltage is connected with reverse polarity. It comes in a TO-220 package, providing good thermal performance. The SPX1587AT-1.5 is a suitable choice for applications requiring a high-current, adjustable, and robust voltage regulator. Specifically, the '1.5' in the name indicates that the output can be adjusted to 1.5V using external resistors.