參數(shù)資料
型號(hào): NCP1729SN35T1G
廠商: ON SEMICONDUCTOR
元件分類(lèi): 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: LEAD FREE, SOT-23, TSOP-6
文件頁(yè)數(shù): 18/22頁(yè)
文件大小: 165K
代理商: NCP1729SN35T1G
NCP1729
http://onsemi.com
18
Figure 42. 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
50
50
The NCP1729 can be configured to produce a positive output voltage doubler with current capability of 500 mA. This is
accomplished with the addition of two external switch transistors and two Schottky diodes. The output voltage is approximately
equal to 2.0 V
in
minus the sum of the base emitter drops of both transistors and the forward voltage of both diodes. The
performance characteristics for the converter is shown below. Note that the output resistance is reduced to 1.8 .
8.0
I
out
, OUTPUT CURRENT (mA)
Figure 43. Positive Doubler with Current Boosted
Load Regulation, Output Voltage vs. Output Current
V
o
,
0
0.4
0.5
0.3
0.2
0.1
7.2
8.4
7.6
8.8
V
in
= 5.0 V
R
out
= 1.8
T
A
= 25
°
C
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相關(guān)代理商/技術(shù)參數(shù)
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