The UZ1086-3.3 is a low dropout positive fixed voltage regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). It is specifically designed to provide a stable 3.3V output voltage, making it ideal for applications requiring a fixed voltage rail.

Applications:

• Motherboard Power Supplies: Provides a stable 3.3V supply for various motherboard components like chipsets and I/O controllers.
• Peripheral Devices: Powers 3.3V compatible peripherals such as USB devices, memory cards, and sensors.
• Microcontroller Power: Supplies a regulated 3.3V voltage to microcontrollers and other digital logic circuits.
• Post Regulators for Switching Power Supplies: Reduces noise and ripple in 3.3V outputs from switching power supplies.
• Embedded Systems: Used in embedded systems requiring a reliable 3.3V power rail.

Features:

• Fixed 3.3V Output Voltage: Provides a precise and stable 3.3V output without the need for external adjustment resistors.
• Low Dropout Voltage: Maintains regulation even when the input voltage is only slightly higher than the output voltage.
• Current Limiting: Protects the regulator and the load from excessive current draw.
• Thermal Shutdown: Shuts down the regulator when the internal temperature exceeds a safe level.
• High Accuracy: Delivers a stable 3.3V output voltage with minimal deviation.
• Available in various packages: Offered in TO-220, TO-252, and TO-263 packages to suit different power dissipation needs.

Benefits:

• Stable 3.3V Power: Provides a clean and reliable 3.3V power supply, crucial for sensitive electronic components.
• Protection Features: Includes current limiting and thermal shutdown to prevent damage from overload or overheating.
• Simplified Design: Fixed output voltage simplifies the design process as no external resistors are required for voltage setting.
• Improved Efficiency: Low dropout voltage improves efficiency, especially when the input voltage is close to 3.3V.
• Easy Implementation: Requires minimal external components, making it easy to integrate into various circuits.

Additional Details:

The UZ1086-3.3 typically requires input and output capacitors for stability. Refer to the datasheet for recommended capacitor values and specifications. The dropout voltage is typically around 1.3V at the rated current. The operating temperature range typically spans from -40°C to +125°C. Maximum input voltage should be verified in the datasheet, but is generally around 30V. Output current is generally 3A.