L4973 STMicroelectronics, L4973 Datasheet - Page 12

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

Typical characteristics
7
12/27
Typical characteristics
Figure 9.
Figure 11. Stand by drain current vs.
Ibias
(mA)
Ibias
(µA)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
150
100
50
0
0
V
Tamb=25˚C
0% DC
inh
10
10
Quiescent drain current vs.
input voltage (0% duty cycle)
input voltage
= 5V
20
20
30
30
200KHz-R2=22K
25˚C
125˚C
40
40
C7=1.2nF
100KHz-R2=20K
0Hz
50 V
50 V
D97IN635A
D97IN633A
C7=2.7nF
CC
CC
(V)
(V)
Figure 10. Quiescent drain current vs.
Figure 12. Reference voltage vs. junction
V
5.15
5.05
Ibias
(mA)
(V)
5.1
5.0
4.0
3.5
3.0
2.5
REF
-50
-40
-20
junction temperature
temperature (pin 16)
0% DC
V
CC
= 35V
0
0
Vcc=35V
20
40
50
0Hz
200KHz-R2=22K
100KHz-R2=20K
60
Pin 16
C7=1.2nF
100
C7=2.7nF
80
100
D97IN637
D97IN634
Tj(˚C)
Tj(˚C)
L4973