MC79L12ABPG

The MC79L12ABPG is a low cost, three terminal, fixed negative linear voltage regulator in 3 pin TO-92 package. This inexpensive, easy to use device is suitable for numerous applications requiring up to 100mA output current. Like the higher powered MC7900 series negative regulators, this regulator features internal thermal overload protection and internal short circuit current limiting, making it remarkably rugged. Thermal overload protections shuts down the circuit when subjected to an excessive power overload condition and internal short circuit protection limits the maximum current the circuit will pass. In most applications, no external components are required for operation. The MC79L12ABPG is useful for on-card regulation or any other application where a regulated negative voltage at a modest current level is needed. This regulator offers substantial advantage over the common resistor/zener diode approach.

• Nominal output voltage of -12V
• Complementary positive regulators offered (MC78L00 series)
• Maximum input voltage of -35V
• Maximum input regulation of 250mV (-14.5VDC ≥ VI ≥ -27VDC) & 200mV (-16VDC ≥ VI ≥ -27VDC) at 25°C
• Maximum load regulation of 100mV ( 1mA ≤ IO ≤ 100mA) and 50mV (1mA ≤ IO ≤ 40mA) at TJ = +25°C
• Ripple rejection of 42dB at -15VDC ≥ VI ≥ -25VDC, f = 120Hz, TJ = +25°C
• Dropout voltage of 1.7VDC at IO = 40mA, TJ = +25°C
• Input bias current of 6.5mA at TJ = +25°C
• Output noise voltage of 80µV at TA = +25°C, 10Hz ≤ f ≤ 100KHz
• Operating temperature range from -40° to +125°C

Applications

Power Management