STMicroelectronics L78L Series Fixed 12V 100mA Linear Voltage Regulator SOT-89

The STMicroelectronics L78L Series 12V 100mA Linear Voltage Regulator is a fixed-voltage, 3-terminal positive linear regulator supplied in a SOT-89-3 surface mount package.

Overview

The L78L Series provides fixed 12V output regulation with a maximum output current of 100mA when paired with an adequate heat sink. It is designed as a local or on-card voltage regulator, helping to reduce noise and address power distribution issues associated with single-point regulation systems. It is well suited to cleaning up power supplies to sensitive components.

Key Features

• Internal current limiting, thermal shutdown, and short-circuit protection
• No external components required for basic operation
• Low quiescent current and reduced output noise
• Can be used with external power pass elements to build high-current regulator circuits
• Functions as a drop-in replacement for Zener diode and resistor combinations

Specifications

• Nominal Output Voltage: 12V
• Maximum Input Voltage: 35V
• Operating Temperature Range: 0°C to +125°C
• Mounting Style: Surface Mount (SMD)
• Package: SOT-89-3
• Weight: 0.195 g

The STMicroelectronics L78L Series 12V 100mA regulator suits compact electronic designs where simplicity of use and reduced board space are required.