Datasheet
L7985 Application information
Doc ID 022446 Rev 3 33/43
Figure 28. Load regulation Figure 29. Line regulation
3.310
3.315
3.320
3.325
3.330
3.335
3.340
3.345
0.00 0.50 1.00 1.50 2.00
V
OUT
[V]
Io [A]
Vin=5V
Vin=12V
Vin=24V
3.3200
3.3250
3.3300
3.3350
3.3400
3.3450
3.3500
5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0
V
OUT
[V]
V
IN
[V]
Io=1A
Io=2A
Figure 30. Load transient: from 0.4 A to 2 A Figure 31. Soft-start
V
OUT
100mV/div
AC coupled
I
L
500mA/div
Time base 100us/div
V
IN
=24V
V
OUT
=3.3V
C
OUT
=47uF
L=10uH
F
SW
=520k
V
OUT
100mV/div
AC coupled
I
L
500mA/div
Time base 100us/div
V
IN
=24V
V
OUT
=3.3V
C
OUT
=47uF
L=10uH
F
SW
=520k
V
OUT
500mV/div
V
FB
200mV/div
I
L
500mA/div
Time base 1ms/div
Figure 32. Short-circuit behavior V
IN
=12 V Figure 33. Short-circuit behavior V
IN
= 24 V
OUT
5V/div
I
L
1A/div
V
OUT
1V/div
SYNCH
5V/div
Timebase 10us/div
OUT
5V/div
I
L
0.5A/div
V
OUT
1V/div
SYNCH
5V/div
Timebase 10us/div