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SC2441ITSTRT Datasheet(PDF) 9 Page - Semtech Corporation

Part # SC2441ITSTRT
Description  Very Low Input Voltage 2-Phase Synchronous Step-down Controllers with Step-up Converter
PDF  35 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC2441ITSTRT Datasheet(HTML) 9 Page - Semtech Corporation

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 2005 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC2441
Block Diagram
Figure 3
Figure 4
FB3
PH3
COMP3
Step-up Converter Functional Diagram
EA3
SLOPE
COMP
+
R
Q
S
PWM3
CLK
-
+
-
+
+
1.25V
+
-
ISEN3
ILIM3
+
-
14mV
Σ
PGND
24
27
7
7m
Ω
8
OL
0.47V/3.25V
S
Q
R
+
-
0.6V/0.9V
DSBL
2µΑ
3µΑ
FB
SS/EN
FAULT
0.36V
Details of the Soft-start and
Overload Hiccup Control Circuit



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