The MC78L18ACPG is a fixed output positive voltage regulator in 3 pin TO-92 package. This inexpensive, easy to use device is suitable for multitude of applications that require regulated supply of up to 100mA. Like higher powered MC7800 and MC78M00 series devices, this regulator features internal short circuit current limiting and internal thermal shutdown making it remarkably rugged. No external components are required with MC78L18A device in many applications. This device offers a substantial performance advantage over traditional zener diode-resistor combination as output impedance and quiescent current are substantially reduced.
Fixed output voltage of 18V
Dropout voltage of 1.7VDC at TJ = +25°C
Maximum input voltage of 35V
Line regulation of 45mV (20.7VDC
Load regulation of 30mV (TJ = +25°C, 1mA
Input bias current of 3.1mA (TJ = +25°C)
Output noise voltage of 150µV at TA = +25°C, 10Hz
Ripple rejection of 48dB (IO =40mA, f = 120 Hz, 23V
