Part # LM7905 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM79XX Series 3-Terminal Negative Regulators

Part Details:

LM79XX September 2001 Series LM79XX Series3-Terminal Negative RegulatorsGeneral Description resistor divider. The low quiescent current drain of these 3-T devices with a specified maximum change with line and load The LM79XX series of 3-terminal regulators is available with ensures good regulation in the voltage boosted mode. erminal fixed output voltages of -5V, -12V, and -15V. These devices For applications requiring other voltages, see LM137 need only one external component -- a compensation ca- datasheet. pacitor at the output. The LM79XX series is packaged in theTO-220 power package and is capable of supplying 1.5A ofoutput current. Features These regulators employ internal current limiting safe area n Thermal, short circuit and safe area protection Negative protection and thermal shutdown for protection against vir- n High ripple rejection tually all overload conditions. n 1.5A output current Low ground pin current of the LM79XX series allows output n 4% tolerance on preset output voltage voltage to be easily boosted above the preset value with a Regulators Connection Diagrams Typical Applications TO-220 Package Fixed Regulator DS007340-3 DS007340-14 *Required if regulator is separated from filter capacitor bymore than 3". For value given, capacitor must be solid Front View tantalum. 25µF aluminum electrolytic may be substituted. Order Number LM7905CT, LM7912CT or LM7915CT See NS Package Number TO3B Required for stability. For value given, capacitor must besolid tantalum. 25µF aluminum electrolytic may be substi-tuted. Values given may be increased without limit. For output capacitance in excess of 100µF, a high currentdiode from input to output (1N4001, etc.) will protect theregulator from momentary input shorts. © 2001 National Semiconductor Corporation DS007340 Absolute Maximum Ratings (Note 1) Input-Output Differential Series If Military/Aerospace specified devices are required, (V = -5V) 25V o please contact the National Semiconductor Sales Office/ (V = -12V and -15V) 30V o

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LM7905.pdf Datasheet