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參數(shù)資料
| 型號： | RM4391D |
| 廠商： | RAYTHEON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Inverting and Step-Down Switching Regulator |
| 中文描述： | 0.375 A SWITCHING REGULATOR, CDIP8 |
| 文件頁數(shù)： | 13/22頁 |
| 文件大?。?/td> | 153K |
| 代理商： | RM4391D |
RC4391
PRODUCT SPECIFICATION
13
Figure 16. Step-Down Medium Power Application
Figure 17. Step-Down High Power Application
Figure 18. Voltage Dependent Oscillator
Figure 18. Current Limiting
65-2479
+V
4391
s
Cx
GND
Lx
0.1
μ
F
R2
C1
V
REF
FB
V
+V
2N3635
R4
30 - 100
+V
OUT
s
MBR030
Lx
R1
Cx
R3
1K
Note:
A minimum load
3
1mA must be connected.
8
7
6
5
C
F
3
4
V
BAT
65-2077
4391
L
+V
V
V
TIP116
GND
MBR140P
C
500
R1
5K
2N3904
R3
1K
(+)
(+5V at 1A as shown)
(-)
470
μ
F
250
μ
H
R4
20K
470 pF
+1.3V
R2
5K
470 pF
*
S
X
REF
X
V
FB
Note:
A minimum load
3
1mA must be connected.
*Optional — Extends supply voltage range.
C
X
6
7
8
3
4
5
C
F
+V
R4
R5
C2
Q2
2
1
65-2053
S
OSC
To
+1.25V
3
C
V
X
C
C
X
LBR
LBD
+V
65-2159
S
4391
3
X
C
1
W
2N3906
or Equivalent
X
C
+V
S
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