参数资料
型号: L4971D
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: 12/13页
文件大小: 571K
代理商: L4971D
L4971
8/13
Figure 18. Efficiency vs. output current.
Figure 19. Efficiency vs. output current.
Figure 20. Efficiency vs. VCC.
Figure 21. Power dissipation vs. Vcc.
Figure 22. Efficiency vs. VO
Figure 23. Pulse by pulse limiting current vs.
junction temperature.
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
(%)
D97IN740
VCC=8V
fsw=200KHz
VO=5.1V
VCC=12V
VCC=24V
VCC=48V
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4 IO(A)
55
60
65
70
75
80
85
90
η
(%)
D97IN741
VCC=8V
fsw=200KHz
VO=3.36V
VCC=12V
VCC=24V
VCC=48V
0
1020304050
VCC(V)
70
75
80
85
η
(%)
D97IN742
V
0=5.1V-f
SW
=100KHz
IO=1.5A
V
0
=5.1V-f
SW =200KHz
V
0
=3.36V-f
SW=100KHz
V
0
=3.36V-f
SW
=2
00KHz
0
1020304050
VCC(V)
0
200
400
600
800
Pdiss
(mW)
D97IN743
IO=1.5A
VO=5.1V
fsw=100KHz
IO=1A
IO=0.5A
0
5
10
15
20
25
30 V0(V)
0
200
400
600
800
Pdiss
(mW)
D97IN744
IO=1.5A
VCC=35V
fsw=100KHz
IO=1A
IO=0.5A
-50 -25
0
25
50
75
100 125 Tj(C)
2.3
2.4
2.5
2.6
2.7
2.8
2.9
Ilim
(A)
D97IN747
fsw=100KHz
VCC=35V
相关PDF资料
PDF描述
L4971D013TR 3 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDSO16
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