EL7564CMZ Intersil, EL7564CMZ Datasheet - Page 14

• Manufacturer Part Number: EL7564CMZ
• Description: IC REG 4A DC-DC STEP DN 20-SOIC
• Manufacturer: Intersil
• Type: Step-Down (Buck)r

Specifications of EL7564CMZ

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1 ~ 3.8 V
• Current - Output: 4A
• Frequency - Switching: 1MHz
• Voltage - Input: 4.5 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Power - Output: 13W
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The second way of offset tracking is to use the EN and
Power Good pins, as shown in Figure 24. In this
configuration, V
P
does not have to be larger than V
10
10
1
2
3
5
6
7
8
9
1
2
3
5
6
7
8
9
14
EL7564
EL7564
EN
PG
EN
PG
V
IN
20
19
18
16
15
14
13
12
11
20
19
18
16
15
14
13
12
11
R
C
FIGURE 27. EXTERNAL SOFT START
FIGURE 26. OFFSET TRACKING
C
10
1
2
6
7
8
9
.
STN
STP
EL7564
+
-
EL7564
V
V
C
P
20
19
15
14
13
12
11
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:
t
s
=
R
×
C
×
---------
V
V
IN
O
V
TIME
OUT
V
V
P
C
May 9, 2005
FN7297.3