SC4521EVB-3 Semtech, SC4521EVB-3 Datasheet - Page 5

• Manufacturer Part Number: SC4521EVB-3
• Description: EVALUATION BOARD
• Manufacturer: Semtech

Specifications of SC4521EVB-3

• Silicon Manufacturer: Semtech
• Application Sub Type: Step Down Switching Regulator
• Kit Application Type: Power Management - Voltage Regulator
• Silicon Core Number: SC4521
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

POWER MANAGEMENT
Block Diagram
Typical Characteristic - OCP Limit
2007 Semtech Corp.
COMP
COMP
FB
FB
SS
SS
EN
EN
1.6V INTERNAL SUPPLY
1.6V INTERNAL SUPPLY
6.5
5.5
4.5
3.5
2.5
7
6
5
4
3
2
0
-
-
EA
EA
OSCILLATOR
OSCILLATOR
20
REFERENCE
REFERENCE
SC4519H OCP Limit vs Duty Cycle
SLOPE COMP
SLOPE COMP
FREQUENCY
FREQUENCY
40
Duty Cycle (%)
+
+
PWM
PWM
UVLO
UVLO
SLOPE
SLOPE
CLK
CLK
5
SLOPE
SLOPE
60
+
+
+
+
S
S
R
R
Q
Q
Is
Is
80
HICCUP
HICCUP
FB
FB
Is
Is
ISEN
ISEN
100
+
+
OL
OL
ILIM @-40C
ILIM @25C
ILIM @125C
POWER
POWER
TRANSISTOR
TRANSISTOR
40m
40m
GND
GND
BST
BST
IN
IN
SW
SW
www.semtech.com
SC4521