
REF19x Series
Data Sheet
0
OFF 100%
5V
–20
ON
90%
–40
–60
–80
–100
10%
–120
0 %
2 0mV
1 00μ s
10
100
1k 10k
100k
1M
FREQUENCY (Hz)
Figure 9. Ripple Rejection vs. Frequency
10 μ F
Figure 12. Load Transient Response
REF19x
VIN = 15V
1k Ω
10 μ F
2
REF19x
4
6
1 μ F
10 μ F
1k Ω
OUTPUT
V IN = 15V
2
4
6
1 μ F
0
10mA
REF
Figure 10. Ripple Rejection vs. Frequency Measurement Circuit
Figure 13. Load Transient Response Measurement Circuit
V IN = 7V
2
REF19x
4
6
200V
V G = 2V p-p
100%
2V
1 μ F
1 μ F
Z
V S = 4V
90%
4
1mA
3
2
1
10%
0%
LOAD
30mA
LOAD
0
10
100
1k
10k
100k
1M
10M
2V
100μs
FREQUENCY (Hz)
Figure 11. Output Impedance vs. Frequency
Figure 14. Power-On Response Time
REF19x
2
V IN = 7V
4
6
1 μ F
Figure 15. Power-On Response Time Measurement Circuit
Rev. L | Page 18 of 28