The UTC78D09L-TN3-R is a three-terminal positive voltage regulator manufactured by Unisonic Technologies Co., Ltd. (UTC). This component is a part of the UTC78D series, specifically designed to provide a fixed 9V output voltage. The "-TN3-R" suffix usually indicates specific packaging or tape and reel options for automated assembly processes. It's employed to guarantee a stable voltage supply for various electronic circuits, safeguarding sensitive components from potential voltage variations. Its robust construction coupled with built-in protection mechanisms makes it a dependable choice for diverse applications.

Applications

• Power supply for microcontrollers in embedded systems.
• Voltage regulation in audio equipment such as amplifiers and mixers.
• Use in consumer electronics like DVD players and gaming consoles.
• Voltage stabilization for industrial control systems requiring a consistent 9V supply.
• Power management in battery-powered devices and portable equipment.

Features

• Fixed 9V output voltage: Delivers a stable and precisely regulated 9V DC output.
• Low dropout voltage: Maintains efficient regulation even with input voltage close to the output voltage.
• Short-circuit protection: Prevents damage to the regulator and connected circuits from short circuits.
• Thermal overload protection: Protects against overheating and potential failure due to excessive power dissipation.
• Overvoltage protection: Shuts down the regulator when input voltage exceeds safe operating limits.
• High ripple rejection: Minimizes output voltage fluctuations caused by input voltage ripple.

Benefits

• Provides a stable and reliable power supply: Ensures consistent performance of connected electronic devices.
• Protects against electrical damage: Shields sensitive electronic components from voltage spikes and fluctuations.
• Simplifies circuit design: Reduces the requirement for external voltage regulation components.
• Enhances system reliability: Improves the overall durability and longevity of electronic products.
• Cost-effective voltage regulation: Offers a dependable solution at an economical price point.

Additional Details

The UTC78D09L-TN3-R typically comes in a TO-252 or similar surface-mount package, with the "-TN3-R" likely designating Tape and Reel packaging for automated assembly. The input voltage generally falls within the range of 11.5V to 30V, although this can differ based on specific datasheet revisions. The output current is commonly rated up to 1A, and thermal management is crucial for safe operation. A heat sink may be required depending on the power dissipation. The typical operating temperature range is -40°C to +125°C. Consulting the official UTC datasheet is crucial for obtaining the most accurate and current specifications. Input and output bypass capacitors are often recommended for enhanced stability and improved transient response.