If capacitive loading must be placed on the VREF pin, one of the compensation schemes shown below must be used to ensure stable operation.
Values of capacitance must remain within the given ranges.
XTR115
XTR116
(1)
RISO
10Ω
IO
VREG
+5V
Regulator
V+
7
8
ILOAD
+
CHF
CLF
(0-2.5mA)
(10pF to 0.5µF)
(2.2µF to 22µF)
VREF
1
Voltage
Reference
VLOOP
OR
B
6
IIN
2
RL
A1
E
5
(1)
+
CLF
(2.2µF to 22µF)
RLIM
3
CHF
ILOAD
(0-2.5mA)
IRET
(10pF to 0.5µF)
R1
2.475kΩ
R2
25Ω
100 VIN
RIN
(1)
RCOMP
IO
4
=
50Ω
I = 100 • IIN
NOTE: (1) Required compensation components.
FIGURE 5. Stable Operation with Capacitive Load on VREF
.
XTR115, XTR116
8
SBOS124A
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