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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)： | 14/22頁(yè) |
| 文件大小： | 165K |
| 代理商： | NCP1729SN35T1 |
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NCP1729
http://onsemi.com
14
Capacitors = 3.3 F
+
6
4
2
3
1
OSC
+
V
in
5
V
out
+
R
1
R
2
10 k
Figure 32. Line and Load Regulated Negative Output Voltage
An adjustable shunt regulator can be used with the shutdown input to give excellent closed loop regulation performance. The
shunt regulator acts as a comparator with a precise input offset voltage which significantly reduces the converter’s output
resistance and dramatically enhances the line and load regulation. For closed loop operation, the desired regulated output
voltage must be lower in magnitude than V
in
. The output will regulate at a level of V
ref
(R
2
/R
1
+ 1). The adjustable shunt
regulator can be from either the TLV431 or TL431 families. The comparator offset or reference voltage is 1.25 V or 2.5 V
respectively. The performance characteristics for the converter are shown below. Note that the dashed curve sections represent
the converter’s open loop performance.
2.0
3.0
1.0
4.0
5.0
I
out
, OUTPUT CURRENT (mA)
Figure 33. Load Regulation, Output Voltage vs.
Output Current
V
o
,
0
30
70
10
20
40
50
60
A
B
T
A
= 25
°
C
A
3.0
5.0 k
B
5.0
24 k
Curve
V
in
(V)
R
2
( )
1.8
4.2
V
out
(V)
10 k
10 k
R
1
( )
2.5
0.5
3.5
4.5
V
in
, INPUT VOLTAGE (V)
V
o
,
1.0
3.0
2.0
4.0
5.0
6.0
Figure 34. Line Regulation, Output Voltage vs.
Input Current
1.5
I
out
= 25 mA
R
1
= 10 k
R
2
= 24 k
T
A
= 25
°
C
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| NCP1800DM42R2 | 功能描述:電池管理 4.2V Single Cell RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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