The AMS1117M-5.0/TR is a low dropout (LDO) linear voltage regulator manufactured by HGSEMI. It is designed to provide a fixed 5.0V output voltage with a dropout voltage typically around 1.2V at the maximum rated current. This regulator is commonly used in various electronic applications due to its simplicity, low cost, and ease of use.

Applications:

• Post Regulator for Switching Supplies: Cleanly regulates the output of a switching power supply to provide a precise voltage.
• Battery Chargers: Provides a constant voltage and/or current for charging various types of batteries, such as lithium-ion or NiMH.
• Microprocessor Power Supplies: Powers microprocessors, microcontrollers, and digital signal processors in a wide range of embedded systems.
• PC Motherboards: Regulates various voltages required by different components on a PC motherboard.
• Hard Disk Drives: Provides stable power to the electronics within a hard disk drive.

Features:

• Fixed 5.0V Output: Delivers a stable and accurate 5.0V output voltage.
• Low Dropout Voltage: Operates with a low input-to-output voltage differential.
• Output Current of 1A: Capable of supplying up to 1A of output current.
• Thermal Overload Protection: Protects the regulator from damage due to excessive power dissipation.
• Short-Circuit Protection: Limits the output current in the event of a short circuit.

Benefits:

• Ease of Use: Simple to implement with minimal external components.
• High Efficiency: Minimizes power loss and heat generation.
• Over-Temperature Protection: Enhances system reliability.
• Stable Output: Provides a stable and accurate output voltage under varying load conditions.
• Cost-Effective: A low-cost solution for voltage regulation.

Additional Details:

The AMS1117M-5.0/TR comes in a SOT-223 package suitable for surface mounting. External capacitors are required for stable operation; the datasheet specifies the recommended values and types of capacitors. It is important to consider the thermal characteristics and heat sinking requirements when operating at higher currents. The /TR suffix typically indicates that the parts are provided on tape and reel for automated assembly processes. This regulator is widely available and supported, making it a popular choice for many applications. The dropout voltage is dependent on the output current and temperature and is specified in the datasheet. It also features good line and load regulation, ensuring a stable output voltage even with variations in input voltage or load current.