MC7812CT ON Semiconductor

MC7800, MC7800A, MC7800AE, NCV7800 1.0 A Positive Voltage Regulators These voltage regulators are monolithic integrated circuits designed as fixedvoltage regulators for a wide variety of applications MC7800, MC7800A, MC7800AE, NCV7800 V in MC7800 R24 D2 50 Zener LAT 3 A LAT R19 Q18 Q17 27.5 k Q19 QNPN Q20 QNPN C3 1.0 P R14 1.0 k Q10 QNPN R15 R18 R21 680 R23 100 k R22 600 0.2 100 V out 5.01 Q7 QNPN Q5 QNPN 2 R30 R17 Q12 18 k 9.0 k Sense QNPN Q9 R12 R29 QNPN 2 R11 3.0 k 9.0 k Q6 D1 Q15 15 k QNPN Zener QNPN R25 R28 R1 6.0 k 9.0 k 10.66 k R10 R16 R20 3340-(3316ACT) 600 17500 R26 R27 Q8 3.0 k 9.0 k QNPN R2 1.56 k R9 R5 R13 3.0 k 4.5 k 11660 SUB Q14 Q11 2 Q1 C1 QNPN C2 30 P N+ 3.0 P QNPN 6 Q4 QNPN Q13 Q3 QNPN QNPN Q2 Q16 QNPN 4 R6 1.0 k Diode R7 R3 R8 14 k 1.8 k 5.0 k This device contains 22 active transistors. Figure 1. Representative Schematic Diagram