7915/LM7915應(yīng)用電路

7915/LM7915應(yīng)用電路

*Required if regulator is separated from filter capacitor by
more than 3". For value given, capacitor must be solid
tantalum. 25μF aluminum electrolytic may be substituted.
†Required for stability. For value given, capacitor must be
solid tantalum. 25μF aluminum electrolytic may be substituted.
Values given may be increased without limit.
For output capacitance in excess of 100μF, a high current
diode from input to output (1N4001, etc.) will protect the
regulator from momentary input shorts.

7915 Typical Applications (Continued)

Load Regulation at DIL = 1A 40mV 2mV
Output Ripple, CIN = 3000μF, IL = 1A 100 μVms 100 μVms
Temperature Stability 50mV 50mV
Output Noise 10Hz £ f £ 10kHz 150 μVms 150 μVms
*Resistor tolerance of R4 and R5 determine matching of (+) and (−) outputs.
**Necessary only if raw supply filter capacitors are more than 3" from regulators.