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參數(shù)資料
| 型號： | MB3778PF |
| 廠商： | FUJITSU LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 0.075 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, SOP-16 |
| 文件頁數(shù)： | 17/29頁 |
| 文件大小： | 276K |
| 代理商： | MB3778PF |
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MB3778
17
I
USING THE R
T
TERMINAL
The triangular waves, as shown in Figure “No V
REF
/2 connection to external circuits from R
T
terminal”, act to set
the oscillator frequency by charging and discharging the capacitor connected to the C
T
terminal using the current
value of the resistor connected to the R
T
terminal.
In addition, when voltage level V
REF
/2 is output to external circuits from the RT terminal, care must be taken in
making the external circuit connections to adjust for the fact that I
1
is increased by the value of the current I
2
to
the external circuits in determining the oscillator frequency (see Figure “V
REF
/2 connection to external circuits
from R
T
terminal”).
No V
REF
/2 connection to external circuits from R
T
terminal
V
REF
/2 connection to external circuits from R
T
terminal
2
1
I
CT
C
T
R
T
I
RT
I
CT
=
I
RT
V
REF
2R
T
=
V
REF
( )
Triangular wave
oscillator
Triangular wave
oscillator
2
1
I
CT
C
T
R
T
I
RT
I
CT
=
I
RT
V
REF
2R
T
=
+
I
2
V
REF
( )
I
1
I
2
=
I
1
+
I
2
To external circuits
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