LM123 Datasheet | STMicroelectronics

DESCRIPTION The LM123, LM223, LM323 are three-terminal positive voltage regulators with a preset 5V output and a load driving capability of 3A. New circuit design and processing techniques are used to provide the high output current without sacrificing the regulation characteristics of lower current devices. The 3A regulator is virtually blowout proof. Current limiting, power limiting and thermal shutdown provide the same high level of reliability obtained with these techniques in the LM209, 1A regulator. An overall worst case specification for the bined effects of input voltage, load current, ambient temperature, and power dissipation ensure that the LM123, LM223, LM323 will perform satisfactorily as a system element. TO-220 ORDER CODES Part Number LM123 LM223 LM323 Temperature Range -55 o C to 150 o C -25 o C to 150 o C 0 o C to 125 o C Package K - - - - T PIN CONNECTION TO-3 (bottom view) TO-220 (front view) - Input 2 - Output 3 - GND 1 - Input 2 - Output March 1993 1/9 LM123-LM223-LM323 ABSOLUTE MAXIMUM RATING Symbol VI IO Ptot Toper Input Voltage Output Current Power Dissipation Operating Junction Temperature Range LM123 LM223 LM323 Tstg Storage Temperature Range Parameter Value 20 Internally Limited Internally Limited -55 to 150 -25 to 150 0 to 125 -65 to 150 o o Unit V THERMAL CHARACTERISTICS Symbol Parameter TO-3 TO-220 Rthj-amb Junction-ambient Thermal Resistance TO-3 TO-220 Typ. 2 3 35 50 o Max. Unit o Rthj-case Junction-case Thermal Resistance C/W C/W SCHEMATIC DIAGRAM Case TO-3 TO-220 VI 1 1 VO 2 2 GND Case 3 2/9 LM123-LM223-LM323 ELECTRICAL CHARACTERISICS o o LM123: -55 C < Tj < 150 C o LM223: -25 C < Tj < 150 o C LM323: 0 o C < Tj < 150 o C Symbol VO VO Parameter Output Voltage Range (Note 2) Tamb = 25 o C, VI = 7.5 V, I O = 0 Output Voltage Range (Note 2) Tmin ≤ Tj ≤ Tmax, P ≤ Pmax 7.5 V ≤ VI ≤ 15 V, 0 ≤ IO ≤ 3 A Line Regulation (Note 3) Tj = 25 o C, 7.5 V ≤ VI ≤ 15V Load Regulation (Note 3) Tj = 25 o C, VI = 7.5 V, 0 ≤ IO ≤ 3 A...