參數(shù)資料
型號(hào): NCP1117DTAT5G
廠商: ON SEMICONDUCTOR
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: 1.0 A Low−Dropout Positive Fixed and Adjustable Voltage Regulators
中文描述: 1.25 V-18.8 V ADJUSTABLE POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PSSO2
封裝: LEAD FREE, DPAK-3
文件頁(yè)數(shù): 10/17頁(yè)
文件大小: 178K
代理商: NCP1117DTAT5G
NCP1117, NCV1117
http://onsemi.com
10
Figure 24. Constant Current Regulator
Figure 25. Slow TurnOn Regulator
Figure 26. Regulator with Shutdown
Figure 27. Digitally Controlled Regulator
Figure 28. Battery BackedUp Power Supply
Figure 29. Adjusting Output of Fixed
Voltage Regulators
The 50 resistor that is in series with the ground pin of the
upper regulator level shifts its output 300 mV higher than the
lower regulator. This keeps the lower regulator off until the
input source is removed.
Resistor R2 sets the maximum output voltage. Each
transistor reduces the output voltage when turned on.
1
2
Constant Current
Output
3
Input
NCP1117
XTA
+
+
10
F
Iout
Vref
R
Iadj
10
F
R
1
2
Output
3
Input
NCP1117
XTA
+
+
10
F
10
F
1N4001
R2
R1
10
F
50 k
2N2907
1
2
Output
3
Input
NCP1117
XTA
+
+
10
F
10
F
120
2N2222
360
1.0 k
1.0 k
Output Control
On
Off
1
2
Output
3
Input
NCP1117
XTA
+
+
10
F
10
F
R1
2N2222
R2
1
50
2
Output
3
Input
NCP1117
XT50
+
+
10
F
10
F
+
R
CHG
1
NCP1117
XT50
+
10
F
6.6 V
5.3 V AC Line
5.0 V Battery
1
2
Output
3
Input
NCP1117
XT50
+
+
10
F
+
10
F
10
F
2.0 k
5.0 V to
12 V
Vout(Off)
Vref
Output Voltage Control
2
3
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