UCC1800/1/2/3/4/5
UCC2800/1/2/3/4/5
UCC3800/1/2/3/4/5
1000
100
10
100
99.5
99
98.5
98
97.5
97
96.5
96
95.5
95
10
100
(k )
1000
10
100
Oscillator Frequency (kHz)
1000
R
T
Figure 5. UCC1803/5 oscillator frequency vs. RT and CT.
Figure 6. UCC1800/2/3 maximum duty cycle vs.
oscillator frequency.
50
49.5
49
16
14
12
, 1nF
10V
=
10
VCC
48.5
48
8
6
47.5
47
, No Load
= 10V
4
2
0
CC
V
, No Load
8V
=
CC
V
46.5
0
100 200 300 400 500 600 700 800 900 1000
10
100
1000
Oscillator Frequency (kHz)
Oscillator Frequency (kHz)
Figure 7. UCC1801/4/5 maximum duty cycle vs.
oscillator frequency.
Figure 8. UCC1800 ICC vs. oscillator frequency.
7