LT1185 LINER [Linear Technology], LT1185 Datasheet - Page 12

• Manufacturer Part Number: LT1185
• Description: Low Dropout Regulator
• Manufacturer: LINER [Linear Technology]

LT1185
TYPICAL APPLICATIO S
12
V
+
–
IN
+
2 F
TANT
V
IN
GND
LT1185
*DIODE CONNECTION INDICATES A FLYBACK
SWITCHING TOPOLOGY, BUT FORWARD
CONVERTERS MAY ALSO BE USED
PRIMARY
REF
LT1185 • TA03a
Auxiliary + 12V Low Dropout Regulator for Switching Supply
2N3906
V
R3
15k
OUT
U
FB
Q1
R4
5.36k
*
*
R1
2.37k
R2
2.61k
+
+
Foldback Current Limiting
+
2 F
TANT
V
IN
REF
V
R
OUT
+
–
LIM
LT1185
CONTROL
GND
5V
V
OUT
FB
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
R1
2.37k
R2
9.76k
+
LT1185 • TA04
12V
REGULATED
AUXILIARY
5V
MAIN
OUTPUT
I
SHORT-CIRCUIT
I
FULL LOAD
I
OUT
= 15k
R3
= 15k
R3
+
10.8k
R4
LT1185 • TA03b