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SC4518HEVB Scheda tecnica(PDF) 6 Page - Semtech Corporation

Il numero della parte SC4518HEVB
Spiegazioni elettronici  600kHz, 2A Step-Down Switching Regulator
PDF  15 Pages
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Produttore elettronici  SEMTECH [Semtech Corporation]
Homepage  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4518HEVB Scheda tecnica(HTML) 6 Page - Semtech Corporation

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 2007 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC4518H
Block Diagram
FB
COMP
R
Q
S
PWM
-
+
POWER
IN
TRANSISTOR
SLOPE
+
+
+
ISEN
40m
SW
BST
OSCILLATOR
CLK
FREQUENCY
SLOPE COMP
SYNC
SLOPE
OL
FB
EN
REFERENCE
1V
UVLO
0.7V
EA
SOFT START
HICCUP
Is
Is
GND
FB
COMP
R
Q
S
PWM
-
+
POWER
IN
TRANSISTOR
SLOPE
+
+
+
ISEN
40m
SW
BST
OSCILLATOR
CLK
FREQUENCY
SLOPE COMP
SYNC
SLOPE
OL
FB
EN
REFERENCE
1V
UVLO
0.7V
EA
SOFT START
HICCUP
Is
Is
GND
Typical Characteristic - OCP Limit
SC4518H OCP Limit vs Duty Cycle
0.5
1
1.5
2
2.5
3
3.5
4
4.5
020
40
60
80
100
Duty Cycle (%)
ILIM @ -40C
ILIM @ 25C
ILIM @ 125C



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