The UT1085L-18-TN3-R is a low dropout (LDO) linear regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). It's designed to provide a stable and regulated output voltage of 1.8V with a low dropout voltage, making it suitable for applications where the input voltage is close to the desired output voltage. This regulator is commonly used in portable devices, battery-powered systems, and other applications requiring efficient voltage regulation.

Applications:

• Portable devices: Used in smartphones, tablets, and other battery-powered devices for voltage regulation.
• Battery-powered systems: Employed in applications where a stable voltage is needed from a battery source.
• Post-regulation for switching power supplies: Used to further reduce noise and ripple in switching power supply outputs.
• Microcontroller power supplies: Provides a stable voltage for microcontrollers and other digital ICs.
• Low-voltage systems: Suitable for systems requiring a regulated 1.8V supply.

Features:

• Low dropout voltage: Operates with a small difference between the input and output voltage.
• 1.8V fixed output voltage: Provides a stable and accurate 1.8V output.
• Over current protection: Includes built-in protection against excessive current draw.
• Thermal shutdown protection: Shuts down the regulator in case of overheating.
• Reverse voltage protection: Prevents damage from reverse voltage conditions.
• Small package: Typically available in a compact package for space-constrained applications.

Benefits:

• Efficient voltage regulation: Low dropout voltage improves efficiency, especially in battery-powered systems.
• Stable output voltage: Provides a consistent and accurate output voltage.
• Protection features: Over current and thermal shutdown protection enhance reliability and prevent damage.
• Compact size: Saves space on PCBs, allowing for smaller designs.
• Simplified design: Fixed output voltage simplifies circuit design.

Specifications:

The UT1085L-18-TN3-R has a fixed output voltage of 1.8V. The dropout voltage is typically very low (refer to the datasheet). The output current capability and quiescent current depend on the specific operating conditions; consult the UTC datasheet for detailed specifications.

Note: Always refer to the manufacturer's datasheet for the most accurate and up-to-date specifications and application guidelines.