LM104 Datasheet | National Semiconductor

Description The LM104 series are precision voltage regulators which can be programmed by a single external resistor to supply any voltage from 40V down to zero while operating from a single unregulated supply They can also provide 0 01-percent regulation in circuits using a separate floating bias supply where the output voltage is limited only by the breakdown of external pass transistors Although designed primarily as linear series regulators the circuits can be used as switching regulators current regulators or in a number of other control applications Typical performance characteristics are Y Subsurface zener reference Y 1 m V regulation no load to full load Y 0 01% V line regulation Y 0 2 m V V ripple rejection Y 0 3% temperature stability over military temperature range The LM104 series is the plement of the LM105 positive regulator intended for systems requiring regulated negative voltages which have a mon ground with the unregulated supply By themselves they can deliver output currents to 25 m A but external transistors can be added to get any desired current The output voltage is set by external resistors and either constant or foldback current limiting is made available The LM104 is specified for operation over the b55 C to a 125 C military temperature range The LM204 is specified for operation over the b25 C to a 85 C temperature range The LM304 is specified for operation from 0 C to a 70 C Schematic Diagram TL H 7754 - 1 C1995 National Semiconductor Corporation TL H 7754 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications (Note 6) Input Voltage Input-Output Voltage Differential Power Dissipation (Note 1) Operating Temperature Range LM104 LM204 LM304 Storage Temperature Range Lead Temperature (Soldering 10 sec ) LM104 LM204 50V 50V 500 m W b 55 C to a 125 C b 25 C to a 85 C LM304 40V 40V 500 m...