參數(shù)資料
型號: UCC3806L
元件分類: 穩(wěn)壓器
英文描述: 0.5 A SWITCHING CONTROLLER, CQCC20
封裝: LCC-20
文件頁數(shù): 6/7頁
文件大?。?/td> 118K
代理商: UCC3806L
6
UCC1806
UCC2806
UCC3806
47pF
100pF
220pF
330pF
470pf
1.0nF
2.2nF
10k
100k
1M
10k
1
100k
1M
CT=
Figure 3. Oscillator frequency vs. RT and CT.
TYPICAL CHARACTERISTICS (continued)
Design Equations
for Oscillator:
F
T
T
OSC
RAMP
FALL
=
+
1
T
RT CT
CT
125
RAMP
=
192
.
24
T
RT
FALL
=
0002
.
.
.
DeadTime T
FALL
0
5
10
15
20
25
0
500k
Oscillator Frequency (Hz)
1M
1.5M
I
@ Load or No Load
I @ No Load
C
IN
I @Oupu Load=1nF 10
SeresRessance
C
S
Figure 4. Supply current vs. oscillator frequency.
25
30
35
40
45
50
1k
10k
Oscillator Frequency (Hz)
C
C
T
C
T
100k
1M
M
Figure 5. Maximum duty cycle vs. frequency.
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