Datasheet LT1939 (Analog Devices) - 8

LT1939
BLOCK DIAGRAM
OUT1V OUT2V D2 C7 C5 R1 R2 D1 R4 L1 C6 R3 1939 BD 10 9 11 12 8 4 7 V FB LFB BST SW PG PG LDR SS + + – – + + – Y 100mV 0.7V LFB DRIVER + CIRCUITR 0.8V 115mV 0.8V SS + + – – + Q S R
T1939 Block Diagram
THERMAL OVERLOAD POWER ON RESET
Figure 1. L
TION SLOPE COMPENSA Q TOR TOR PRE INTERNAL AND AGC REGULA OSCILLA S R AND REFERENCES 2μA + – 2.5μA + – 2.75μA 0.76V /SYNC IN T C V GND SHDN R V SS 100mV 1 13 2 6 5 3 C1 C4 C2 R5 C3 R6 1939f 8