Datasheet

Typical characteristics L5970D
8/16
Figure 9. Quiescent current vs
junction temperature
Figure 10. Switching frequency vs
junction temperature
Figure 11. Shutdown current vs junction
temperature
Figure 12. Efficiency vs output current
Figure 13. 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)
Efficiency (%)
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)
Efficiency (%)
Vcc=12V
Vo=5V
Vo=3.3V
Vo=2.5V