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參數(shù)資料
| 型號(hào)： | NCP1729SN35T1 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Switched Capacitor Voltage Inverter |
| 中文描述： | SWITCHED CAPACITOR CONVERTER, 54 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | SOT-23, TSOP-6 |
| 文件頁(yè)數(shù)： | 19/22頁(yè) |
| 文件大?。?/td> | 165K |
| 代理商： | NCP1729SN35T1 |
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NCP1729
http://onsemi.com
19
Figure 44. Line and Load Regulated Positive Output Voltage Doubler with High Current Capability
+
6
4
2
3
1
OSC
+
V
in
5
V
out
Q
1
C
3
+
C
2
Q
2
C
1
Capacitors = 220 F
Q
1
= PZT751
Q
2
= PZT651
R
2
R
1
10 k
50
50
This converter is a combination of Figures 42 and the shunt regulator to close the loop. In this case the anode of the regulator
is connected to ground. It provides a line and load regulated output of 7.6 V at up to 300 mA with a input voltage of 5.0 V. The
output will regulate at a level of V
ref
(R
2
/R
1
+ 1). The open loop configuration is the dashed line and the closed loop is the solid
line. The performance characteristics are shown below.
8.0
I
out
, OUTPUT CURRENT (A)
Figure 45. Current Boosted Close Loop Load
Regulation, Output Voltage vs. Output Current
V
o
,
0
0.4
0.5
0.3
0.2
0.1
0.6
8.4
7.6
8.8
V
in
= 5.0 V
R
out
= 1.8
R
out
= 0.5
R
1
= 10 k
R
2
= 51.3 k
T
A
= 25
°
C
Open Loop
Closed Loop
7.2
6.0
V
in
, INPUT VOLTAGE (V)
V
o
,
1.0
4.0
5.0
3.0
2.0
6.0
1.0
7.0
5.0
8.0
Figure 46. Current Boosted Close Loop Line
Regulation, Output Voltage vs. Input Voltage
I
out
= 100 mA
R
1
= 10 k
R
2
= 51.3 k
T
A
= 25
°
C
4.0
3.0
2.0
8.6
8.2
7.8
7.4
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