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| 型号： | 5962-9457501QEX |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, CDIP16 |
| 封装： | DIP-16 |
| 文件页数： | 8/11页 |
| 文件大小： | 239K |
| 代理商： | 5962-9457501QEX |
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
TT
OSC
RAMP
FALL
=
+
1
TRT
CT
RAMP =
192
.
T
CT
RT
FALL =
24
0 002
125
.
.–
.
Dead Time TFALL
=
0
5
10
15
20
25
0
500k
1M
1.5M
Oscillator Frequency (Hz)
I
@ Load or No Load
IN
I
@
Output
Load
= 1nF
, 10
Ser
ies
Resistance
C
I @ No Load
C
Supply
Current
(mA)
Figure 4. Supply current vs. oscillator frequency.
25
30
35
40
45
50
1k
10k
C=
1
n
F
T
C
=
330pF
T
C
=100pF
T
100k
1M
Oscillator Frequency (Hz)
Maxim
um
Duty
Cycle
(%)
Figure 5. Maximum duty cycle vs. frequency.
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