The UTC79L09 is a three-terminal negative voltage regulator manufactured by Unisonic Technologies Co., Ltd (UTC). It provides a fixed -9V output voltage and is designed for a wide range of applications requiring a stable negative supply, particularly those requiring low current.

Applications:

• Negative Voltage Regulation
• Linear Power Supplies
• Local Regulation
• On-Card Regulation
• Low-Power Microcontroller Power Supplies

Features:

• Fixed -9V Output
• Output Current up to 100mA
• Internal Short-Circuit Current Limiting
• Thermal Overload Protection
• Available in TO-92 and SOP-8 Packages

Benefits:

• Stable Negative Voltage: Provides a consistent and reliable -9V output voltage.
• Simplified Design: Requires minimal external components, simplifying circuit design and reducing board space.
• Overload Protection: Internal current limiting and thermal overload protection prevent damage from excessive current or temperature.
• Cost-Effective: Provides a low-cost solution for negative voltage regulation.
• Small Size: Available in small packages suitable for compact designs.

Technical Specifications:

The UTC79L09 has a fixed output voltage of -9V. The input voltage range is typically -11.5V to -30V. It can supply an output current of up to 100mA. The device has internal short-circuit and thermal overload protection. It is typically housed in TO-92 or SOP-8 package options. Consult the datasheet for detailed electrical characteristics and thermal specifications.

The UTC79L09 is an ideal choice for applications needing a well-regulated and protected -9V negative voltage supply at lower current levels. Its simplicity and protection features make it suitable for a variety of electronic devices.