LT1117IST-3.3#PBF Voltage Regulator from Linear Technology

The LT1117IST-3.3#PBF is a robust low dropout positive voltage regulator designed by Linear Technology, now part of Analog Devices, to provide a stable 3.3V output voltage. This fixed voltage regulator is an ideal solution for a wide range of applications, including local on-card regulation, where the ability to handle a difference between the input and output voltage with minimal loss is crucial.

Key Features

• Fixed Output Voltage: This device provides a fixed output voltage of 3.3V, which is a common requirement for many digital circuits and microcontroller-based systems.
• Low Dropout Performance: The LT1117IST-3.3#PBF boasts a low dropout voltage, which ensures efficient operation even when the input voltage is close to the output voltage, making it highly suitable for battery-powered devices.
• High Output Current: Capable of delivering up to 800mA of output current, this regulator can power a variety of components without the need for an additional heatsink under normal conditions.
• Thermal Protection: The device includes internal thermal overload protection that shuts down the output when the maximum junction temperature is exceeded, safeguarding your circuit from potential damage.
• Current Limit Protection: In addition to thermal protection, the regulator also features current limiting to protect the device under fault conditions, such as short circuits.
• Stable with Low ESR Capacitors: The LT1117IST-3.3#PBF is stable with output capacitors as low as 10μF, allowing for the use of modern low-ESR capacitors.

Applications

This voltage regulator is versatile and can be used in a variety of applications, including but not limited to:

• Portable electronics
• Microcontroller power supplies
• Peripheral power supplies
• Linear power regulators for embedded systems

The LT1117IST-3.3#PBF is available in a TO-220 package, which is known for its ease of installation and good thermal performance. Its lead(Pb)-free finish and RoHS compliance make it suitable for eco-friendly applications and regulations. With its combination of features, this Linear Technology voltage regulator is an excellent choice for designers looking for a reliable and efficient power management solution.