SC4519 Semtech Corporation, SC4519 Datasheet - Page 6

• Manufacturer Part Number: SC4519
• Description: 3A Step-Down Switching Regulator
• Manufacturer: Semtech Corporation

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POWER MANAGEMENT
Block Diagram
2007 Semtech Corp.
SYNC
SYNC
COMP
COMP
FB
FB
EN
EN
OSCILLATOR
OSCILLATOR
-
-
EA
EA
1V
1V
REFERENCE
REFERENCE
0.7V
0.7V
SLOPE COMP
SLOPE COMP
FREQUENCY
FREQUENCY
+
+
PWM
PWM
UVLO
UVLO
SLOPE
SLOPE
CLK
CLK
SLOPE
SLOPE
6
+
+
+
+
S
S
R
R
Q
Q
Is
Is
SOFT START
SOFT START
HICCUP
HICCUP
FB
FB
Is
Is
ISEN
ISEN
+
+
OL
OL
POWER
POWER
TRANSISTOR
TRANSISTOR
40m
40m
GND
GND
BST
BST
IN
IN
SW
SW
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SC4519