SC4520 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC4520' PDF : 12 Pages View PDF
POWER MANAGEMENT
Block Diagram
SC4520
+
Is
+
SLOPE
+
ISEN
IN
40m
COMP
FB
EN
SFYSNECT
-
EA
+
PWM
SQ
R
BST
POWER
TRANSISTOR
1V
REFERENCE UVLO
OSCILLATOR
0.7V
SLOPE
SLOPE COMP
FREQUENCY
CLK
Is
SOFT START
OL
HICCUP
FB
SW
GND
Typical Characteristic - OCP Limit
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
0
SC4519H OCP Limit vs Duty Cycle
Rosc = 0
ILIM @-40C
ILIM @25C
ILIM @125C
20
40
60
80
100
Duty Cycle (%)
2006 Semtech Corp.
5
www.semtech.com
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