l5973 STMicroelectronics, l5973 Datasheet - Page 7

• Manufacturer Part Number: l5973
• Description: Up To 2.5a Step Down Switching Regulator
• Manufacturer: STMicroelectronics

L5973D
4
Typical characteristics
Figure 3.
Figure 5.
Figure 7.
Vo (V)
Iq (mA)
3.312
3.308
3.284
1.22
1.21
3.304
3.296
3.292
3.288
3.276
1.24
1.23
1.25
1.2
Vo (V)
3.28
1.6
1.4
1.2
1.8
3.3
2
-50
-50
0
Vcc = 12V
Vo = 3.3V
Vcc = 12V
DC = 0%
Line regulation
Output voltage vs junction
temperature
Quiescent current vs junction
temperature
0
0
10
Tj (°C)
Tj (°C)
Vcc (V)
50
50
20
Tj = 25°C
Tj = 125°C
Vcc = 12V
100
100
30
Vcc=12V
150
150
40
Figure 4.
Figure 6.
Ishd (µA)
Fsw (KHz)
70
60
50
40
30
260
250
240
220
230
-50
-50
Vcc = 12V
Shutdown current vs junction
temperature
Switching frequency vs
junction temperature
Vcc = 12V
Vo = 3.3V
0
0
Typical characteristics
Tj (°C)
Tj (°C)
50
50
100
100
150
150
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