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參數(shù)資料
| 型號： | NCP500SQL50T1G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 150 mA CMOS Low Noise Low−Dropout Voltage Regulator |
| 中文描述： | 5 V FIXED POSITIVE LDO REGULATOR, 0.18 V DROPOUT, PDSO6 |
| 封裝： | 2 X 2.2 MM, LEAD FREE, DFN-6 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大小： | 153K |
| 代理商： | NCP500SQL50T1G |
NCP500
http://onsemi.com
15
Figure 27. Typical Application Circuit
V
out
Battery or
Unregulated
Voltage
C1
C2
OFF
ON
1
2
3
5
4
+
+
Figure 28. Typical Application Circuit
V
out
Battery or
Unregulated
Voltage
+
C1
OFF
ON
1
3
2
4
5
6
+
C2
Output
R
1
2
3
5
4
Input
1.0 F
1.0 F
Output
1
2
3
5
4
Input
1.0 F
1.0 F
Q2
Q1
R3
R1
R2
The NCP500 series can be current boosted with a PNP transis-
tor. Resistor R in conjunction with V
BE
of the PNP determines
when the pass transistor begins conducting; this circuit is not
short circuit proof. Input/Output differential voltage minimum is
increased by V
BE
of the pass resistor.
Short circuit current limit is essentially set by the V
BE
of Q2 and
R1. I
SC
= ((V
BEQ2
ib * R2) / R1) + I
O(max) Regulator
Q1
0
10
1
75
50
25
0.1
0.01
100
125
150
I
O,
Output Current (mA)
O
C
out
= 1
F to 10 F
T
A
= 40
°
C to 125
°
C
V
in
= up to 6.0 V
UNSTABLE
STABLE
Figure 29. Stability
Figure 30. Current Boost Regulator
Figure 31. Current Boost Regulator with Short
Circuit Limit
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