參數(shù)資料
型號: UPC1935GR
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): 14/28頁
文件大?。?/td> 185K
代理商: UPC1935GR
Data Sheet G13418EJ3V0DS00
14
μ
PC1935
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 input threshold value of the error amplifier is 0.3 V (TYP) for all the error amplifiers, E/A
1
, E/A
2
, and E/A
3
.
Therefore, select a resistor value that gives this voltage.
Figure 3-1 Setting the Output Voltage
(1) When setting a positive output voltage using error amplifier E/A
1
.
(2) When setting a positive output voltage using error amplifier E/A
2
.
6
7
0.3 V
E/A
1
V
OUT
= 1 + R
1
R
2
R
1
R
2
C
NF
R
NF
V
OUT
(positive voltage)
0.3
11
10
0.3 V
E/A
2
V
OUT
= 1 + R
1
R
2
R
1
R
2
C
NF
R
NF
V
OUT
(positive voltage)
0.3
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