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SC4524FSETRT Datasheet(PDF) 6 Page - Semtech Corporation

Part # SC4524FSETRT
Description  18V 2A Step-Down Switching Regulator
PDF  23 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4524FSETRT Datasheet(HTML) 6 Page - Semtech Corporation

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SC4524F
6
Block Diagram
Figure 2. SC4524F Block Diagram
Figure 3. Soft-start and Overload Hiccup Control Circuit
FAULT
SS/EN
OVERLOAD
1V/2.15V
S
Q
R
+
2mA
3.5mA
1.9V
-
S
R
OC
PW M
Q
_
B1
B2
B3
B4
IC
ID
IN
2
ROSC
3
TRANSISTOR
R
Q
S
POW ER
SLOPE
COM P
+
-
ISEN
ILIM
+
-
20m V
6.1m W
+
+
S
BST
REFERENCE
& THERM AL
SHUTDOW N
1V
FAULT
SOFT- START
AND
OVERLOAD
HICCUP
CONTROL
1.9V
R
8
SW
1
FB
7
SS/EN
5
COM P
6
OSCILLATOR
CLK
EA
PW M
+
-
+
1.23V
-
FREQUENCY
FOLDBACK
GND
4
+
+
-
R
OC
A1
V1



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