The SPX1587T-1.8 is a low dropout (LDO) linear regulator manufactured by Sipex Corporation. It is designed to provide a stable and accurate 1.8V output voltage from a higher input voltage, while maintaining high efficiency and low noise. This regulator is ideal for various applications where a clean and regulated power supply is required.

Applications:

• Microprocessor and DSP Power Supplies: Provides regulated power for microprocessors and digital signal processors.
• Post Regulation for Switching Supplies: Used to further reduce noise and improve regulation after a switching power supply.
• Battery-Powered Systems: Efficient voltage regulation for battery-operated devices.
• Portable Electronics: Suitable for use in mobile phones, tablets, and other portable devices.
• Networking Equipment: Provides stable power for networking components.

Features:

• Low Dropout Voltage: Operates with a very small difference between the input and output voltage.
• 1.8V Fixed Output Voltage: Provides a precise and stable 1.8V output.
• High Accuracy: Offers a tight output voltage tolerance.
• Low Quiescent Current: Minimizes power consumption when the output is lightly loaded or unloaded.
• Over-Current Protection: Protects the regulator and the load from excessive current.
• Thermal Shutdown Protection: Shuts down the regulator if the temperature exceeds a safe limit.
• Stable with Ceramic Capacitors: Designed to work with low-ESR ceramic output capacitors.

Benefits:

• Efficient Power Regulation: Low dropout voltage and low quiescent current maximize efficiency.
• Stable Output Voltage: High accuracy ensures a stable power supply for sensitive components.
• Protection Features: Over-current and thermal shutdown protection enhance reliability.
• Compact Solution: Small package size allows for space-saving designs.
• Easy to Use: Simple external components requirement simplifies design.

Additional Details:

The SPX1587T-1.8 is typically available in a TO-252 package. The regulator's low dropout voltage allows it to operate efficiently even when the input voltage is close to the output voltage. It requires a minimum output capacitance for stability, and ceramic capacitors are recommended due to their low ESR. The over-current and thermal shutdown protection features are essential for preventing damage to the regulator and the load in fault conditions. Refer to the datasheet for detailed specifications, including input voltage range, output current capability, and thermal characteristics. The datasheet also provides information on recommended external components and PCB layout considerations for optimal performance.