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參數(shù)資料
| 型號： | UPC1934GR-PJG |
| 廠商： | NEC Corp. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | DC-DC CONVERTER CONTROL IC |
| 中文描述： | 的DC - DC轉(zhuǎn)換器控制IC |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 140K |
| 代理商： | UPC1934GR-PJG |
Data Sheet G13567EJ3V0DS00
12
μ
PC1934
3.
NOTES ON USE
3.1
Setting the Output Voltage
Figure 3-1 illustrates the method of setting the output voltage. The output voltage is obtained using the formula shown in
the figure.
The common mode input voltage range of the error amplifier is 0 to 0.4 V (TYP) for both the error amplifiers, E/A
1
and
E/A
2
. Therefore, select a resistor value that gives this voltage range.
Figure 3-1 Setting the Output Voltage
(1) When setting a positive output voltage using error amplifier E/A
1
.
(2) When setting a negative output voltage using error amplifier E/A
2
.
16
4
3
5
R
NF
C
NF
R
4
R
3
R
2
R
1
V
REF
V
REF
V
OUT
(positive voltage)
V
OUT
= 1 + R
1
R
2
R
4
R
3
+ R
4
E/A
1
16
13
14
12
R
NF
C
NF
R
4
R
3
R
2
R
1
V
REF
V
REF
V
OUT
(negative voltage)
V
OUT
=
R
1
R
4
R
2
R
3
R
1
(R
3
+R
4
)
E/A
2
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