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LM7912 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM7912 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 10 page  TLH7340 November 1994 LM79XX Series 3-Terminal Negative Regulators General Description The LM79XX series of 3-terminal regulators is available with fixed output voltages of b5V b8V b12V and b15V These devices need only one external componenta com- pensation capacitor at the output The LM79XX series is packaged in the TO-220 power package and is capable of supplying 15A of output current These regulators employ internal current limiting safe area protection and thermal shutdown for protection against vir- tually all overload conditions Low ground pin current of the LM79XX series allows output voltage to be easily boosted above the preset value with a resistor divider The low quiescent current drain of these devices with a specified maximum change with line and load ensures good regulation in the voltage boosted mode For applications requiring other voltages see LM137 data sheet Features Y Thermal short circuit and safe area protection Y High ripple rejection Y 15A output current Y 4% tolerance on preset output voltage Connection Diagrams TO-220 Package TLH7340 – 14 Front View Order Number LM7905CT LM7912CT or LM7915CT See NS Package Number TO3B Typical Applications Fixed Regulator TLH7340 – 3 Required if regulator is separated from filter capacitor by more than 3 For value given capacitor must be solid tantalum 25 mF aluminum electrolytic may be substituted Required for stability For value given capacitor must be solid tantalum 25 mF aluminum electrolytic may be substi- tuted Values given may be increased without limit For output capacitance in excess of 100 mF a high current diode from input to output (1N4001 etc) will protect the regulator from momentary input shorts C1995 National Semiconductor Corporation RRD-B30M115Printed in U S A |
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