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SC4612STRT 데이터시트(PDF) 8 Page - Semtech Corporation

부품명 SC4612STRT
상세설명  Wide Input Range High Performance Synchronous Buck Switching Controller
PDF  24 Pages
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제조업체  SEMTECH [Semtech Corporation]
홈페이지  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4612STRT 데이터시트(HTML) 8 Page - Semtech Corporation

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 2007 Semtech Corp.
www.semtech.com
SC4612
POWER MANAGEMENT
Block Diagram
OCP @ Asynchronous Start up
EAO > FB + 0.7
True
False
for more than 10
cycles
Allow
Synchronous
mode
Soft Start
Cycle
PWM
Enable
Vcc
UVLO
SS
+
-
800mV
PWM
Disable
Vcc UVLO
+
-
Over Voltage Protection
S Q
R
FB
600mV
20% OVP
Low Side 100% on
Top Side off
PWM
Enable
+
-
FB
Vref
Synchronous
Mode
S Q
R
PWM
Enable
Low Side
Rdson OCP
S Q
R
PWM
Enable
PWM
Disable
+
-
SS
Vref+0.5
REF
INTERNAL REGULATOR
&
BANDGAP GENERATOR
VDD
DRV
GND
Oscillator
900mV
OSC
Current
Limit
ILIM
SOFT START
&
Enable
SS/EN
TOP Side
Gate Driver
BST
DH
PHASE
PWM Control
Low Side
Gate Driver
VCC
DL
GND
BST
DH
PHASE
DL
+
-
Error
Amp.
FB
SS
FB
+
-
EN
SYNC
OCP
Synchronous
Mode
PWM
PWM
EAO
OVP
OCP
OVP
Q
S R
SS



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