If capacitive loading must be placed on the V
REF
pin, one of the compensation schemes shown below must be used to ensure stable operation.
Values of capacitance must remain within the given ranges.
R
ISO(1)
10Ω
I
LOAD
(0-2.5mA)
+
C
HF
(10pF to 0.5µF)
C
LF
(2.2µF to 22µF)
XTR115
XTR116
V
REG
8
V
REF
1
Voltage
Reference
+5V
Regulator
V+
7
I
O
OR
I
IN
2
A1
V
LOOP
B
6
R
L
E
5
3
I
RET
R
COMP(1)
50Ω
R
1
2.475kΩ
R
LIM
R
2
25Ω
I
O
=
4
I = 100 • I
IN
100 V
IN
R
IN
+
I
LOAD
(0-2.5mA)
C
HF
(10pF to 0.5µF)
C
LF(1)
(2.2µF to 22µF)
NOTE: (1) Required compensation components.
FIGURE 5. Stable Operation with Capacitive Load on V
REF
.
8
XTR115, XTR116
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SBOS124A