el7564 Intersil Corporation, el7564 Datasheet - Page 13

• Manufacturer Part Number: el7564
• Description: Monolithic 4 Amp Dc/dc Step-down Regulator
• Manufacturer: Intersil Corporation

2. Offset Tracking
The intended start-up sequence is shown in Figure 23a. In
this configuration, V
value of:
--------------------- -
R
A
R
+
B
R
B
u
V
IN
V
R
R
C
IN
A
B
will not start until V
13
10
10
1
2
6
7
8
9
1
2
6
7
8
9
STP
STN
STP
STN
EL7564
EL7564
+
+
-
-
P
reaches a preset
FIGURE 25. OFFSET POWER TRACKING
20
19
15
14
13
12
11
20
19
15
14
13
12
11
EL7564
V
V
C
P
V
OUT
TIME
V
V
P
C
May 9, 2005
FN7297.3