參數(shù)資料
型號: L5971D
廠商: STMICROELECTRONICS
元件分類: 穩(wěn)壓器
英文描述: 3 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDSO16
封裝: SO-16
文件頁數(shù): 8/11頁
文件大小: 158K
代理商: L5971D
0
5
10
15
20
25
Vcc(V)
1
2
3
4
5
Iq
(mA)
200KHz
R1=22K
C2=1.2nF
0Hz
D98IN942
Tamb=25C
0% DC
100KHz;
R1=20K
C2=2.7nF
Figure 3. Quiescent drain current vs. input
voltage.
0
5
10
15
20
25 VCC(V)
60
70
80
90
100
110
120
130
140
150
Ibias
(
A)
D98IN944
Tj=25C
Tj=125C
Vss=GND
Figure 5. Stand-by drain current vs. input
voltage
-50 -30 -10 10 30 50 70 90 110
Tj(C)
1
2
3
4
5
Iq
(mA)
D98IN943
0Hz
200KHz; R1=22K; C2=1.2nF
VCC=20V
0% DC
100KHz; R
1=20K;
C2=2.7nF
Figure 4. Quiescent current vs. junction
temperature
0
20
40
60
80
R1(K
)
5
10
20
50
100
200
500
fsw
(KHz)
D97IN784
0.82nF
1.2nF
2.2nF
3.3nF
4.7nF
5.6nF
Tamb=25C
Figure 7. Switching frquency vs. R1 and C2
0
5
10
15
20
25 VCC(V)
3.370
3.371
3.372
3.373
3.374
3.375
3.376
3.377
VO
(V)
D98IN945
Tj=25C
Tj=125C
Figure 6. Line Regulation
0
5
10
15
20
25 VCC(V)
90.0
92.5
95.0
97.5
100.0
102.5
105.0
107.5
fsw
(KHz)
D98IN947
Tj=25C
Figure 8. Switching Frequency vs. input
voltage.
L5971
6/11
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