EL7563C
Monolithic 4 Amp DC:DC Step-down Regulator
3. External Soft Start
An external soft start can be combined with auxilliary
supply tracking to provide desired soft start other than
internally preset soft start (Figure 5). The appropriate
start-up time is:
ts = R × C × V-V---I-O--N--
VIN
R
C
1
20
2
19
6
15
7
EL7563C
14
8
13
9 STP +
12
10 STN -
11
VOUT
Figure 5. External Soft Start
14