參數(shù)資料
型號(hào): NCV2574
廠商: ON SEMICONDUCTOR
英文描述: 0.5 A, Adjustable Output Voltage, Step-Down Switching Regulator(0.5A,可調(diào)輸出電壓,降壓型開關(guān)穩(wěn)壓器)
中文描述: 0.5甲,可調(diào)輸出電壓,降壓型開關(guān)穩(wěn)壓器(0.5A的,可調(diào)輸出電壓,降壓型開關(guān)穩(wěn)壓器)
文件頁(yè)數(shù): 6/26頁(yè)
文件大?。?/td> 295K
代理商: NCV2574
LM2574, NCV2574
http://onsemi.com
6
,
Vi
Vs
IF
A
B
C
5
s/DIV
T
J
, JUNCTION TEMPERATURE (
°
C)
SWITCH CURRENT (A)
5 s/DIV
T
J
, JUNCTION TEMPERATURE (
°
C)
N
Figure 8. Oscillator Frequency
T
J
, JUNCTION TEMPERATURE (
°
C)
Figure 9. Switch Saturation Voltage
Figure 10. Minimum Operating Voltage
Figure 11. Feedback Pin Current
Figure 12. Continuous Mode Switching Waveforms
V
out
= 5.0 V, 500 mA Load Current, L = 330 H
Figure 13. Discontinuous Mode Switching Waveforms
V
out
= 5.0 V, 100 mA Load Current, L = 100 H
V
in
= 1.23 V
I
Load
= 100 mA
Adjustable Version Only
V
in
= 12 V
Normalized at 25
°
C
Adjustable Version Only
A
B
C
A: Output Pin Voltage, 10 V/DIV.
B: Inductor Current, 0.2 A/DIV.
C: Output Ripple Voltage, 20 mV/DIV, ACCoupled
A: Output Pin Voltage, 10 V/DIV.
B: Inductor Current, 0.2 A/DIV.
C: Output Ripple Voltage, 20 mV/DIV, ACCoupled
TYPICAL PERFORMANCE CHARACTERISTICS
(Circuit of Figure 16) (continued)
8.0
6.0
4.0
2.0
0
2.0
4.0
6.0
8.0
10
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
50
100
80
60
40
20
0
20
40
60
80
100
125
100
75
50
25
0
25
50
0
0.1
0.2
0.3
0.4
0.5
125
100
75
50
25
0
25
125
100
75
50
25
0
25
50
20 V
10 V
0
0.6 A
0.4 A
0.2 A
0
20 mV
AC
20 V
10 V
0
0.4 A
0.2 A
0
20 mV
AC
40
°
C
25
°
C
125
°
C
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