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參數(shù)資料
| 型號： | HA17723P |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Precision Voltage Regulator |
| 中文描述： | 精密電壓調(diào)節(jié)器 |
| 文件頁數(shù)： | 10/17頁 |
| 文件大小： | 91K |
| 代理商： | HA17723P |
HA17723/F/P
10
Floating-Type Fixed Voltage Source
Voltage sources of the floating type or boost type are typically employed when high voltage output is
required. Figure 10 shows the circuit of a floating-type fixed voltage source. Considering the stabilization
in this circuit, assume that the output voltage increases. At the input terminal of the error amplifier the non-
inverted input will become low compared with the inverted input, and the output current of the error
amplifier decreases. Then, the current from the terminal V
Z
in the control circuit decreases. As a result the
base current of the external resistor Q
1
will decrease and collector current will decrease, controlling
increase of the output voltage.
The output voltage V
OUT
in the circuit in figure 10
V
OUT
=
– 1 V
REF
×
R
1
+ R
2
R
3
+ R
4
R
4
R
1
Figure 11 is the circuit diagram of a negative fixed voltage source in floating type.
CS
COMP
CL
2.0W
Q
D 12 V
HZ12
H
V
IN
V
CC
V
REF
R
5
6.2k
R
SC
1
R
4
3.0k
C
1
1nF
R
3
3.0k
R
2
53.7k
R
1
3.57k
V
IN
(+)
V
EE
V
IN
(–)
V
OUT
V
Z
V
OUT
V
C
Figure 10 Positive Voltage Floating Regulator
CL
CS
COMP
V
IN
V
REF
V
IN
(+)
V
EE
R
6
10k
R
4
3k
R
1
3.57k
R
2
97.6k
R
3
3k
R
5
10k
C
1
100pF
V
IN
(–)
V
OUT
V
OUT
V
Z
V
CC
V
C
D12 V
HZ12 H
Q
Figure 11 Negative Voltage Floating Regulator
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HA17741 | General-Purpose Operational Amplifier (Frequency Compensated) |
| HA17741PS | General-Purpose Operational Amplifier (Frequency Compensated) |
| HA17747 | 3000000 SYSTEM GATE 1.5 VOLT FPGA |
| HA17747P | 3000000 SYSTEM GATE 1.5 VOLT FPGA |
| HA17800V | 3000000 SYSTEM GATE 1.5 VOLT FPGA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA17741 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:General-Purpose Operational Amplifier (Frequency Compensated) |
| HA17741/PS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HA17741PS | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:General-Purpose Operational Amplifier (Frequency Compensated) |
| HA17747 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dual Operational Amplifier |
| HA17747/P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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