LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE) 3-TERMINAL 1A POSITIVE VOLTAGE REGULATORS TO-220 The LM78XX series of three-terminal positive regulators are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents. D-PAK 1 FEATURES * * * * * 1: Input 2: GND 3: Output Output Current up to 1A Output Voltages of 5, 6, 8, 9, 10, 11, 12, 15, 18, 24V Thermal Overload Protection Short Circuit Protection Output Transistor SOA Protection ORDERING INFORMATION Device Output Voltage Tolerance KA78XXCT 4% KA78XXAT 2% KA78XXIT KA78XXR Packag e TO-220 2% KA78XXIR 4% 0 ~ +125 C -40 ~ +125 C 4% KA78XXAR Operating Temperature D-PAK 0 ~ +125 C -40 ~ +125 C BLOCK DIAGRAM Rev. B 1999 Fairchild Semiconductor Corporation LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE) ABSOLUTE MAXIMUM RATINGS (TA = +25C, unless otherwise specified) Characteristic Symbol Value Unit VI VI 35 40 V V Input Voltage (for VO = 5V to 18V) (for VO = 24V) Thermal Resistance Junction-Cases RJC 5 C/W Thermal Resistance Junction-Air RJA 65 Operating Temperature Range KA78XX/A/R/RA KA78XXI/RI TOPR 0 ~ +125 -40 ~ +125 C/W C C Storage Temperature Range TSTG -65 ~ +150 C LM7805/I/R/RI ELECTRICAL CHARACTERISTICS (Refer to test circuit, TMIN < TJ < TMAX, IO = 500mA, VI = 10V, CI= 0.33F, CO= 0.1F, unless otherwise specified) Characteristic Symbol Test Conditions TJ =+25 C Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change Output Voltage Drift VO VO VO IQ IQ VO/T VN 5.0mA IO 1.0A, PO 15W VI = 7V to 20V VI = 8V to 20V VO = 7V to 25V TJ=+25C VI = 8V to 12V TJ=+25C 4.0 100 50 1.6 50 IO = 5.0mA to1.5A 9 100 9 100 IO =250mA to 750mA 4 50 4 50 5.0 8 5.0 8 TJ =+25 C IO = 5mA to 1.0A VI= 7V to 25V 0.03 0.5 VI= 8V to 25V IO= 5mA 0.3 -0.8 Short Circuit Current ISC Peak Current IPK VO 4.75 5.0 5.25 100 RO RR V 1.6 Output Resistance Ripple Rejection Dropout Voltage Unit 4.75 5.0 5.25 4.0 f = 10Hz to 100Khz, TA=+25 C f = 120Hz VO = 8 to 18V IO = 1A, TJ =+25 C f = 1KHz Output Noise Voltage LM7805I LM7805 Min Typ Max Min Typ Max 4.8 5.0 5.2 4.8 5.0 5.2 0.03 0.5 0.3 1.3 73 mV mA mA 1.3 42 62 mV 62 -0.8 mV/ C 42 V/Vo 73 dB 2 2 V 15 15 VI = 35V, TA =+25 C 230 230 m mA TJ =+25 C 2.2 2.2 A * TMIN