The SPX1117R is a low dropout (LDO) positive voltage regulator manufactured by Exar Corporation. This regulator is designed to provide a stable and regulated output voltage while operating with a minimal voltage difference between the input and output. It's commonly used in various electronic applications where a consistent and reliable power supply is needed.

Applications

• Post Regulation for Switching Power Supplies: Used to provide a clean and stable output voltage after a switching power supply.
• Battery Chargers: Can be implemented in battery charging circuits to provide regulated voltage for charging.
• Microprocessor and Logic Power Supplies: Supplies a stable voltage to microprocessors, microcontrollers, and other digital logic circuits.
• Instrumentation: Provides accurate voltage to sensitive measurement equipment.
• Linear Regulators for Sensitive Analog Circuitry: Employed where clean and regulated voltage is crucial to prevent noise interference in analog circuits.

Features

• Low Dropout Voltage: Operates with a minimal voltage difference between input and output, enhancing efficiency.
• Adjustable Output Voltage: Can be configured to provide a variable output voltage using external resistors.
• Current Limiting: Protects the regulator and the load from damage due to overcurrent conditions.
• Thermal Shutdown: Protects the regulator from overheating by shutting it down when the temperature exceeds a safe limit.
• Short Circuit Protection: Protects the regulator and load from damage due to short circuits.

Benefits

• Versatile Application: Adjustable output voltage capability makes it suitable for a wide array of voltage regulation applications.
• Efficient Operation: Low dropout voltage minimizes power dissipation and increases efficiency.
• Enhanced Reliability: Integrated protection features like current limiting and thermal shutdown ensure robust performance and longevity.
• Simplified Design: Requires minimal external components, simplifying the design process.

Additional Details

The SPX1117R is designed to operate over a wide temperature range and is available in through-hole and surface-mount packages. It requires external resistors to set the desired output voltage. It adheres to environmental standards such as being lead-free and RoHS compliant.

Consult the datasheet for specific operating conditions, recommended component values, and thermal characteristics.