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NJM78L18L2A

NJM78L18L2A Description

The NJM78L18L2A is a linear regulator designed for applications requiring a stable 18V output voltage with a maximum output current of 100mA. Manufactured by Nisshinbo Micro Devices Inc., this regulator is housed in a TO92-3 package and is suitable for through-hole mounting. Despite its obsolete status, the NJM78L18L2A remains a reliable choice for power management in various electronic systems.

NJM78L18L2A Features

• Output Voltage: The NJM78L18L2A provides a fixed output voltage of 18V, ensuring consistent power supply to connected devices.
• Output Current: It can deliver up to 100mA, making it suitable for low to medium current applications.
• Input Voltage Range: The regulator operates with a maximum input voltage of 40V, offering a wide range of input voltage compatibility.
• Low Quiescent Current: With a quiescent current of only 6.5mA, the NJM78L18L2A is energy-efficient, minimizing power consumption during standby or low-load conditions.
• High PSRR: The regulator boasts a power supply rejection ratio (PSRR) of 59dB at 120Hz, effectively filtering out noise and ripple from the input power supply.
• Protection Features: Over-temperature and short-circuit protection ensure reliable operation and safeguard against potential damage.
• Mounting Type: The through-hole mounting type facilitates easy integration into printed circuit boards (PCBs) and provides robust mechanical stability.
• Package: The TO92-3 package is compact and suitable for applications where space is a constraint.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (Unlimited), the NJM78L18L2A is highly resistant to moisture, enhancing its reliability in various environmental conditions.

NJM78L18L2A Applications

The NJM78L18L2A is ideal for a variety of applications due to its stable output voltage, low quiescent current, and high PSRR. Some specific use cases include:

• Consumer Electronics: Ideal for powering electronic small devices such as radios, portable audio equipment, and low-power peripherals.
• Industrial Control Systems: Suitable for providing stable power to sensors, actuators, and other low-power components in industrial environments.
• Telecommunications: Can be used in low-power communication devices and modules where a stable 18V supply is required.
• Automotive Electronics: Applicable in automotive systems for powering low-current devices such as dashboard indicators, warning lights, and small control units.

Conclusion of NJM78L18L2A

The NJM78L18L2A is a robust linear regulator that offers a stable 18V output with a maximum current of 100mA. Its low quiescent current and high PSRR make it an energy-efficient and noise-resistant solution for various applications. Despite being obsolete, the NJM78L18L2A remains a reliable choice for power management in consumer electronics, industrial control systems, telecommunications, and automotive electronics. Its compact TO92-3 package and through-hole mounting type ensure easy integration into PCBs, while its over-temperature and short-circuit protection features enhance its reliability and durability.