Datasheet

L5973D Typical characteristics
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4 Typical characteristics
Figure 3. Line regulation Figure 4. Shutdown current vs junction
temperature
Figure 5. Output voltage vs junction
temperature
Figure 6. Switching frequency vs
junction temperature
Figure 7. Quiescent current vs junction
temperature
3.276
3.28
3.284
3.288
3.292
3.296
3.3
3.304
3.308
3.312
010203040
Vcc (V)
Tj = 125°C
Tj = 25°C
Vcc = 12V
Vo = 3.3V
Vo (V)
30
40
50
60
70
-50
0
50 100 150
Ishd (
µ
A)
Vcc = 12V
Tj (°C)
Tj (°C)
Vcc=12V
1.2
1.21
1.22
1.23
1.24
1.25
-50 0 50 100 150
Vo (V)
Vcc = 12V
220
230
240
250
260
-50 0 50 100 150
Tj (°C)
Fsw (KHz)
Vcc = 12V
Vo = 3.3V
1.2
1.4
1.6
1.8
2
-50
050
100 150
Tj (°C)
Iq (mA)
Vcc = 12V
DC = 0%