参数资料
型号: L5971D
厂商: STMICROELECTRONICS
元件分类: 稳压器
英文描述: 3 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDSO16
封装: SO-16
文件页数: 9/11页
文件大小: 158K
代理商: L5971D
0
5
10
15
20
25
VO(V)
82
84
86
88
90
92
94
96
η
(%)
D98IN948
100KHz
VCC=20V
IO=1.5A
200KHz
Figure 11. Efficiency vs output voltage.
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4 IO(A)
0.0
0.1
0.2
0.3
0.4
0.5
V
(V)
Tj=25C
Tj=125C
D97IN736
Tj=-25C
Figure 10. Dropout voltage between pin 5
and 4.
-50
0
50
100
Tj(C)
90
95
100
105
fsw
(KHz)
D97IN785
Figure 9. Switching frequency vs. junction
temperature.
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4 IO(A)
75
80
85
90
η
(%)
D98IN950
VCC=8V
fsw=200KHz
VO=3.36V
VCC=12V
VCC=18V
Figure 13. Efficiency vs output current.
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4 IO(A)
75
80
85
90
η
(%)
D98IN949
VCC=8V
fsw=200KHz
VO=5.1V
VCC=12V
VCC=18V
Figure 12. Efficiency vs. output current.
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4 Io(A)
60
65
70
75
80
85
90
η
(%)
Vcc=8V
Vcc=12V
Vcc=18V
Fsw=200KHz
Vo=2.5V
D98IN941
Figure 14. Efficiency vs. output current.
L5971
7/11
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