The SPX1117M3-ADJ/TR is an adjustable positive voltage regulator manufactured by Sipex Corporation (now part of Exar). It is designed to provide a stable and adjustable output voltage with a maximum output current of 1A. The "/TR" suffix typically indicates that it is supplied in tape and reel packaging for automated assembly.

Applications:

• Post regulators for switching power supplies
• Adjustable power supplies
• Battery chargers
• Microprocessor power supplies
• Linear regulators for various electronic devices

Features:

• Adjustable output voltage, configurable using external resistors
• Low dropout voltage, allowing operation with a small input-output voltage difference
• 1A output current capability
• Internal current limiting and thermal shutdown protection
• Three-terminal adjustable or fixed output voltages

Benefits:

• Provides a stable and adjustable voltage supply for sensitive electronic components.
• Operates efficiently even with a low input voltage, extending battery life.
• Protects the regulator and connected circuitry from overcurrent and overheating.
• Offers flexibility in voltage selection to meet specific application requirements.
• Reduces the need for external components, simplifying circuit design.

Technical Specifications:

The SPX1117M3-ADJ/TR has an adjustable output voltage range, typically from 1.25V to close to the input voltage. The dropout voltage is typically around 1.2V at the full rated current. It is available in a SOT-223 package. The operating temperature range extends from -40°C to +125°C. The input voltage range should be carefully observed to avoid damage. Refer to the official Sipex/Exar datasheet for detailed specifications, including the precise output voltage range, dropout voltage characteristics at varying currents, thermal resistance, and recommended external component values.