參數(shù)資料
型號(hào): SC2441EVB
廠商: Semtech Corporation
英文描述: Very Low Input Voltage 2-Phase Synchronous Step-down Controllers with Step-up Converter
中文描述: 非常低的輸入電壓2相同步降壓與升壓轉(zhuǎn)換器控制器
文件頁數(shù): 8/35頁
文件大?。?/td> 733K
代理商: SC2441EVB
8
2005 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
Block Diagram
SC2441
Figure 2
IN
1
SYNC/SHDN
6
OSCILLATOR
EA1
+
SLOPE1
+
ILI
CLK2
CLK1
R
S
Q
OL
DSBL
Soft-Start
And
Overload
Hiccup
Control 1
UVLO
4.45/4.65V
Step-down Controllers Functional Diagram
Non-Overlapping
Conduction
Control
PWM1
+
ROSC
10
FB1
CS1+
4
CS1-
5
-
-
+
REFERENCE
0.5V
+
-
ISEN1
+
-
50mV
-
+
Σ
VCC
21
BST1
25
GDH1
23
PVIN
28
GDL1
22
PGND
SS1/EN1
COMP1
12
VPN1
26
24
3
11
FAULT
GND
9
VIN UVLO
1.60/1.74V
0.5V
0.36V
FREQUENCY
DIVIDER
CLK
1.25V
SLOPE
COMP
SHDN
SLOPE2
SHDN
Non-Overlapping
Conduction
Control
GDH2
19
GDL2
20
SS2/EN2
VPN2
18
2
17
BST2
VCC
PVIN
EA2
+
SLOPE2
+
ILI
R
S
Q
OL
DSBL
Soft-Start
And
Overload
Hiccup
Control 2
PWM2
+
FB2
CS2+
16
CS2-
15
-
-
+
0.5V
+
-
ISEN2
+
-
50mV
Σ
COMP2
13
14
FAULT
SEL
CLK2
1.25V
ANALOG SWITCH
SEL
A
Y
B
相關(guān)PDF資料
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