NJM7815FA

Product Overview

The NJM7815FA from Nisshinbo Micro Devices Inc. is a positive fixed-output linear voltage regulator in a TO-220F through-hole package. It provides a single 15 V output at up to 1.5 A from an input voltage up to 35 V. The device includes over-temperature and short-circuit protection and operates over -40°C to 85°C, making it suitable for regulated dc power rails in general electronic equipment.

Key Features

• Single positive fixed regulator output set to 15 V with a maximum output current of 1.5 A.
• Accepts input voltages up to 35 V while maintaining a fixed 15 V output.
• Quiescent current of 6 mA and power-supply rejection ratio of 70 dB at 120 Hz.
• Includes over-temperature and short-circuit protection features.
• Through-hole TO-220F package for PCB mounting.
• Rated operating temperature range of -40°C to 85°C.

Applications

• Regulated 15 V rail for general-purpose benchtop or laboratory power supplies.
• Secondary linear regulation stage in consumer electronics or equipment power boards.
• Local 15 V supply for analog or digital circuits that require a fixed positive voltage.

Design & Procurement Notes

Designers should confirm that the input voltage stays within the 35 V maximum and that the load current remains at or below 1.5 A for the fixed 15 V output. Because the device is a linear regulator in a through-hole TO-220F package, board layout and thermal relief should be planned around the specified -40°C to 85°C operating range. The 70 dB PSRR at 120 Hz can be considered when addressing input ripple sensitivity, and the 6 mA quiescent current should be included in standby or low-current budget calculations. The integrated over-temperature and short-circuit protections support robust dc-rail designs, but they do not replace system-level thermal and electrical design checks.