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L5970D 数据表(PDF) 8 Page - STMicroelectronics

部件名 L5970D
功能描述  Up to 1A step down switching regulator
PDF  16 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L5970D 数据表(HTML) 8 Page - STMicroelectronics

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Typical characteristics
L5970D
8/16
Figure 8.
Quiescent current vs.
junction temperature
Figure 9.
Switching frequency vs.
junction temperature
Figure 10. Shutdown current vs.junction
temperature
Figure 11. Efficiency vs. output current
Figure 12. Efficiency vs. output current
1.2
1.4
1.6
1.8
2
-50
050
100
150
Tj (°C)
Iq (mA)
Vcc = 12V
DC = 0%
220
230
240
250
260
-50
0
50
100
150
Tj (C)
Fsw (KHz)
Vcc = 12V
Vo = 3.3V
30
40
50
60
70
-50
0
50
100
150
Ishd (
µA)
Vcc = 12V
Tj (°C)
70
72
74
76
78
80
82
84
86
88
90
92
94
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Io (A)
Vo=3.3V
Vo=2.5V
Vo=1.8V
Vcc=5V
70
72
74
76
78
80
82
84
86
88
90
92
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Io (A)
Vcc=12V
Vo=5V
Vo=3.3V
Vo=2.5V



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