LT4430
8
4430fc
For more information www.linear.com/LT4430
block DiagraM
–
+
–
+
+
–
V
IN
R2
2k
I
OC
8.5µA
V
IN
V
IN
I1
12.5µA
1.1V
0.6V
FB
DFB
V1
0.2V
+
–
V
OS
48mV
R1
2k
GND
S1
NORMALLY
OPEN
LOGIC
AND
DELAY
UVLO
STARTUP
BIAS AND
REFERENCE
GENERATOR
ERROR
AMP
OC
AMP
OC
Q6
COMP
OUT
+
–
V2
0.6V
Q7
–
+
OPTO
DRIVER
V
IN
I2
12.5µA
Q4
Q1
Q5
Q2
R3
15k
R4
90k
Q3
4430 BD01
