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參數(shù)資料
| 型號： | TC96C555EOA |
| 廠商： | TelCom Semiconductor, Inc. |
| 英文描述： | 3A OUTPUT PROGRAMMABLE POWER OSCILLATOR |
| 中文描述： | 3A輸出可編程功耗振蕩器 |
| 文件頁數(shù)： | 9/9頁 |
| 文件大?。?/td> | 106K |
| 代理商： | TC96C555EOA |
4-167
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
TC96C555
3A OUTPUT PROGRAMMABLE
POWER OSCILLATOR
APPLICATIONS
(Cont.)
Figure 8. Frequency vs Control
Duty Cycle vs. Charge Current
Frequency in kHz
D
10
30
Charge Current in
μ
A
ISINK = 100
μ
A
50
70
90
100
80
60
40
20
0
20
40
60
80
100
16
38
50
16
38
Figure 6. Duty Cycle vs. Charge Current
Voltage Controlled Oscillator
RCHG = 51k, Rdis = 25.5k
F
3.25V
5V
Control Voltage
1000K
100K
10K
1K
100
10
4V
7V
3.5V
0.1
μ
F
1000pF
100pF
10pF
0.01
μ
F
Figure 7. Voltage Controlled Power Oscillator
VREF
VR1
VIN
VR2
1
3
TC96C555
VDD
GND
C
2
4
OUTPUT
+12V
8
.1
μ
F
OUT
OUT
7
6
RCHG
RDIS
CONTROL
VOLTAGE
SOURCE
By connecting both resistors, R
CHG
and R
DIS
, to a
voltage source instead of connecting to the 4V reference of
Pin 3, one can increase or decrease the output frequency.
Increasing the voltage source to 5V will double the oscillator
frequency by doubling the voltage across both R
CHG
and
R
DIS
. Decreasing the voltage source to 3.5V will drop the
frequency in half.
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