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SC4624 데이터 시트보기 (PDF) - Semtech Corporation
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SC4624
Low Input Voltage, High Efficiency, 4A Integrated FET Synchronous Step down DC/DC Regulator
Semtech Corporation
SC4624 Datasheet PDF : 20 Pages
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POWER MANAGEMENT
Block Diagram
VCC
BANDGAP
BANDGAP
THERMAL
SHUTDOWN
UVLO
AGND
VREF
SS
FB
COMP
SYNC
/EN
F
F
S
B
SOFT
START
SD
OSC
CLOCK
ERROR
OPAMP
PWM
BLOCK
PWM
LOGIC
1.1VREF
0.9VREF
SC4624
ASYNCHRONOUS
START UP
0.5V
+
-
SHOOT-
THRU
PROTECTION
TOP GATE
PVIN1
PVIN2
HIGH SIDE DRIVER
AND LOGIC
ISET
I = F(R_ISET)
OVER
CURRENT
PROTECT
BOTTOM
GATE
LOW SIDE DRIVER
AND LOGIC
PH1
PH2
PH3
PGND
1
PGND
2
PGOOD
2008 Semtech Corp.
10
www.semtech.com
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