The UZ1085 is a low dropout (LDO) positive voltage regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). It is designed to provide a stable and regulated output voltage from a higher input voltage, even when the input voltage is close to the desired output voltage. This makes it suitable for applications where a consistent voltage supply is required, despite fluctuations in the input power source.

Applications:

• Post regulators for switching power supplies
• Battery chargers
• Microprocessor power supplies
• Logic power supplies
• Instrumentation

Features:

• Low dropout voltage: Maintains regulation with minimal voltage difference between input and output.
• Adjustable output voltage: Allows for customization of the output voltage via external resistors.
• Current limiting: Protects the regulator from overcurrent conditions.
• Thermal shutdown: Prevents damage due to excessive heat.
• Reverse battery protection: Guards against damage from incorrect battery polarity.

Benefits:

• Stable voltage supply: Ensures consistent operation of sensitive electronic components.
• Flexibility in design: Adjustable output voltage allows for diverse applications.
• Protection against damage: Current limiting and thermal shutdown enhance reliability.
• Increased system robustness: Reverse battery protection prevents catastrophic failures.

Additional Details:

The UZ1085 typically provides an output current of up to 3A. It's available in various package types, including TO-220 and TO-263. The dropout voltage is typically around 1.3V at maximum current. It's a reliable and efficient regulator suitable for a wide range of electronic devices and power management applications. An external capacitor is often recommended on the output to improve stability and transient response. It's particularly suitable for systems powered by batteries or unregulated power adapters where the input voltage can vary significantly.