78L15

78L15 is a positive 3-terminal linear voltage regulator in a T0-92 type package. With adequate heat sinking this device can deliver up to 100mA output current. Current limiting is included to limit peak output current to a safe value. Safe area protection for the output transistors is provided to limit internal power dissipation. If internal power dissipation becomes too high for the heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating. When used as a Zener diode/resistor combination replacement, this device usually results in an effective output impedance improvement of two orders of magnitude, and lower quiescent current. Typical applications include use in logic systems, instrumentation, Hi-Fi, and other solid state electronic equipment. Although designed primarily as a fixed voltage regulator, this device can be used with external components to obtain adjustment voltages and currents.

• Output voltage tolerances of ±5% over the temperature range
• Output current of 100mA
• Internal thermal overload protection, internal short-circuit current limiting
• Output transistor safe-area compensation
• 15V typical output voltage at Tj=+25’C
• 37mV typical line regulation at Tj=+25°C, 17.5V ≤ Vin ≤ 30V
• 35mV typical line regulation at Tj=+25°C, 1mA ≤ Io ≤ 100mA
• 3.1mA typ quiescent current at Tj=+25°C, 90μV typ output noise voltage at Tj=+25°C, f=10Hz to 10KHz
• 51dB typ ripple rejection at 18.5V ≤ YIN ≤ 28.5V, f=120Hz
• Operating junction temperature range from 0°C to +70°C