L4973 STMicroelectronics, L4973 Datasheet - Page 13

• Manufacturer Part Number: L4973
• Description: 3.5A STEP DOWN SWITCHING REGULATOR
• Manufacturer: STMicroelectronics

L4973
Figure 13. Reference voltage vs.
Figure 15. Inhibit current vs. inhibit
Figure 17. Load regulation (see
V
(µA)
Iinh
100
5.15
5.05
5.15
5.05
-50
50
(V)
5.1
5.0
V
(V)
5.1
5.0
REF
0
O
0
0
0
10
Vcc=35V
Pin 10
input voltage (pin 16)
voltage (pin 10)
Tj=25˚C
Pin 16
5
1
V
CC
20
= 35V
10
30
2
Tj=25˚C
40
Tj=0˚C
Tj=125˚C
15
3
50 V
D97IN636A
Tj=125˚C
D97IN651
D97IN640
Figure
Vinh(V)
CC
I
O
(A)
(V)
7) Figure 18. Line regulation (see
Figure 14. Reference voltage vs.
Figure 16. Line regulation (see
V
5.12
5.08
5.06
3.35
3.34
3.33
3.32
3.31
(V)
5.2
5.1
5.0
4.9
REF
V
(V)
5.1
V
(V)
3.3
O
O
0
0
0
10
10
10
reference input current
Vcc=10V
20
20
20
Tj=25˚C
Typical characteristics
30
30
30
Vcc=40V
Tj=125˚C
Tj=25˚C
I
O
40
40
40
= 1A
I
Tj=125˚C
Tj=25˚C
O
= 1A
50 I
50
50
D97IN639A
D97IN660A
D97IN638
Figure
Figure
REF
V
V
CC
CC
(mA)
(V)
(V)
13/27
7)
8)