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EL7564CREZ Datasheet(PDF) 14 Page - Renesas Technology Corp

Part # EL7564CREZ
Description  Monolithic 4 Amp DC/DC Step-Down Regulator
PDF  17 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

EL7564CREZ Datasheet(HTML) 14 Page - Renesas Technology Corp

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EL7564
FN7297 Rev 3.00
Page 14 of 17
May 9, 2005
The second way of offset tracking is to use the EN and
Power Good pins, as shown in Figure 24. In this
configuration, VP does not have to be larger than VC.
3. External Soft Start
An external soft start can be combined with auxiliary supply
tracking to provide desired soft start other than internally
preset soft start (Figure 25). The appropriate start-up time is:
ts
RC
VO
VIN
---------
=
FIGURE 26. OFFSET TRACKING
VC
2
3
16
15
14
13
5
6
7
12
11
9
8
10
19
18
EL7564
2
3
16
15
14
13
5
6
7
12
11
9
8
10
19
18
EL7564
1
20
1
20
VP
EN
PG
EN
PG
TIME
VC
VP
1
2
15
14
13
12
6
7
8
11
10
9
20
19
EL7564
-
+
VOUT
STP
STN
VIN
R
C
FIGURE 27. EXTERNAL SOFT START



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