UCC2813-0/-1/-2/-3/-4/-5
UCC3813-0/-1/-2/-3/-4/-5
APPLICATION INFORMATION (cont.)
16
14
12
10
V
C
=1
C
,
0V
F
1n
8
7
6
5
V
C
C
=
1
V,
10
nF
I
CC
(mA)
8
V
C
I
CC
(mA)
C
=
1nF
8V,
4
3
2
1
0
0
V
C
C
1
V,
=8
nF
6
4
2
0
0
V
CC
=
10V,
d
No Loa
oL
10V, N
V
CC
=
oad
No Load
V
CC
= 8V,
, No Loa
V
CC
= 8V
d
100
200
300
400
500
600
700
800
900 1000
100
200
300
400
500
600
700
800
900 1000
Oscillator Frequency (kHz)
Oscillator Frequency (kHz)
Figure 8. UCC3813-0 I
CC
vs. oscillator frequency.
Figure 10. UCC3813-5 I
CC
vs. oscillator frequency.
500
450
400
UCC1803/5
1.1
1.0
0.9
0.8
0.7
0.6
0
-55-50
Dead Time (ns)
350
300
250
200
150
100
50
0
100
200
300
400
500
600
700
800
900
1000
C
T
(pF)
UCC1800/1/2/4
COMP to CS Offset (Volts)
Slope = 1.8mV/
°
C
-25
0
25
50
75
100
125
Temperature (°C)
Figure 9. Dead time vs. C
T
, R
T
= 100k.
Figure 11. COMP to CS offset vs. temperature,
CS = 0V.
UNITRODE CORPORATION
7 CONTINENTAL BLVD. • MERRIMACK, NH 03054
TEL. (603) 424-2410 • FAX (603) 424-3460
7
TI [ TEXAS INSTRUMENTS ]
