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SC2447TSTRT 데이터시트(PDF) 11 Page - Semtech Corporation

부품명 SC2447TSTRT
상세설명  Dual-Phase, Single or Dual Output Synchronous Step-Down Controller
PDF  26 Pages
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제조업체  SEMTECH [Semtech Corporation]
홈페이지  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC2447TSTRT 데이터시트(HTML) 11 Page - Semtech Corporation

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© 2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC2447
OSCILLATOR
FREQUENCY
DIVIDER
SLOPE COMP.
REFERENCE
PRE-BIAS
SOFT-START
&
OVERLOAD
HICCUP
CONTROL 1
PRE-BIAS
SOFT-START
&
OVERLOAD
HICCUP
CONTROL 2
Σ
-
+
PWM2
-
+
-
+
PWM1
-
+
EA1
-
+
ISEN2
-
+
EA2
-
+
ISEN1
-
+
ILIM1+
6
3
5
4
8
1
2
9
16
Σ
11
12
10
14
13
24
28
7
20
21
15
25
CLK2
CLK1
CLK
SYNC
ROSC
IN1
CS1+
CS1-
REF
AVCC
GDH1
GDL1
SS1/EN1
COMP1
AGND
GDH2
GDL2
SS2/EN2
IN2
CS2+
CS2-
COMP2
REFOUT
REFIN
SLOPE1
+
+
UV
SLOPE2
50mV
OL1
DSBL1
1.25V
0.5V
SLOPE2
+
+
50mV
UV
MUX
CLK2
SEL
0.5V
OL2
DSBL2
A
Y
B
R
Q
S
R
Q
S
2.5V
-
+
ILIM2+
ANALOG
SWITCH
1.25V
+
1.25V
REFSS2
REFSS2
+
REFSS1
SSL1
SS1/EN1
CLK1
TGON1
OC1
CLK2
SS2/EN2
TGON2
OC2
SSL2
UVLO
4.3/4.5V
2R
R
R2R
TRI-STATE1
TRI-STATE2
Block Diagram
Figure 3. SC2447 Block Diagram



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