L78L06ABUTR

Product Overview

The L78L06ABUTR from STMicroelectronics is a surface-mount linear voltage regulator that provides a fixed positive 6 V output from a single regulator channel. The device is supplied in a SOT-89-3 package, identified as TO-243AA, and is intended for compact printed circuit board layouts where a low-current regulated rail is required. Its input voltage rating is up to 30 V, while the output current capability is 100 mA. Built-in protection features include over current, over temperature, and short circuit protection. The specified operating temperature range is -40°C to 125°C, and the quiescent current is 5.5 mA.

Key Features

• Fixed positive 6 V output from one regulator channel
• Maximum input voltage of 30 V
• Output current rating of 100 mA
• Quiescent current of 5.5 mA and maximum supply current of 6 mA
• Power supply rejection ratio of 46 dB at 120 Hz
• Over current, over temperature, and short circuit protection
• Surface-mount SOT-89-3 package, TO-243AA case
• Operating temperature range of -40°C to 125°C

Applications

• Low-current 6 V rail for embedded control boards
• Regulated supply for sensor and signal conditioning circuits
• Compact surface-mount power section in general electronic assemblies

Design & Procurement Notes

Designers should confirm that the fixed 6 V output and 100 mA current capability match the load requirements. The 5.5 mA quiescent current and 6 mA maximum supply current should be included in the system power budget. Since the maximum input voltage is 30 V, upstream input transients and source selection require attention. The protection features address over current, over temperature, and short circuit conditions, but thermal and input voltage margins should still be checked. The PSRR value is specified at 120 Hz, so additional filtering may be considered for other noise frequencies. The SOT-89-3 surface-mount package requires footprint and pad layout compatibility.