The UZ1085L-3.3 is a low dropout linear regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). It is specifically designed to deliver a stable and regulated 3.3V output voltage with a minimal dropout voltage. This characteristic makes it highly suitable for applications where the input voltage source is only slightly higher than the desired 3.3V output, maximizing efficiency. The UZ1085 series, in general, is known for its higher current output capabilities compared to the UZ1084 series.

Applications:

• Powering microcontrollers and digital signal processors (DSPs).
• Voltage regulation for communication interfaces (e.g., Ethernet PHYs, transceivers).
• Post-regulation for switching power supplies requiring a precise 3.3V rail.
• Power management in battery-powered systems.
• Logic level translation circuitry.

Features:

• Low Dropout Voltage: Ensures stable regulation even with small input-output voltage differences.
• 3.3V Fixed Output Voltage: Provides a precise and consistent 3.3V output.
• High Output Current Capability: Capable of delivering substantial current to power various loads (typically 3A).
• Over-Temperature Protection: Safeguards the regulator from thermal damage under high load or ambient temperature conditions.
• Current Limiting: Prevents excessive current draw, protecting both the regulator and the connected circuitry.

Benefits:

• Stable and Reliable 3.3V Supply: Ensures consistent operation of connected devices that require a precise 3.3V supply.
• Efficient Power Conversion: The low dropout voltage minimizes power loss, thereby improving overall system efficiency and extending battery life in portable applications.
• Robust Protection: Built-in protection features enhance the reliability and robustness of the power supply system.
• Simplified Circuit Design: Requires a minimal number of external components, simplifying the design process.

The UZ1085L-3.3 is commonly found in various electronic devices requiring a stable 3.3V power rail, such as embedded systems, communication equipment, and industrial control systems. It's dropout voltage is typically around 1.3V at the maximum rated current, current limiting is around 3A, and includes thermal shutdown protection. It is often available in surface mount packages like TO-252 and TO-263, and is RoHS compliant and lead-free.