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SC194B датащи(PDF) 13 Page - Semtech Corporation

номер детали SC194B
подробное описание детали  Selectable 3.6V/3.3V/3.0V/2.5V 1A Synchronous Buck Converter
PDF  17 Pages
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производитель  SEMTECH [Semtech Corporation]
домашняя страница  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC194B датащи(HTML) 13 Page - Semtech Corporation

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© 2006 Semtech Corp.
www.semtech.com
SC194B
POWER MANAGEMENT
Typical Characteristics (Cont.)
P-Channel R
DSON vs. Input Voltage
0.10
0.15
0.20
0.25
0.30
0.35
0.40
2.7
3.2
3.7
4.2
4.7
5.2
VIN(V)
TA=-40°C
TA=25°C
TA=85°C
V
OUT (50mV/div)
I
LX (200mA/div)
V
LX (2V/div)
Time (400ns/div)
Condition V
IN= 3.8V, lOUT= 1A, VOUT= 3.3V
100% Duty Cycle Mode
V
OUT (50mV/div)
I
LX (500mA/div)
V
LX (5V/div)
Time (2μs/div)
Condition V
IN=5V, lOUT=50mA, VOUT=3.3V
PSAVE Operation
V
OUT (20mV/div)
I
LX (500mA/div)
V
LX (5V/div)
Time (1μs/div)
Condition V
IN=5V, lOUT=50mA, VOUT=3.3V
PWM Operation
V
EN (2V/div)
V
OUT (2V/div)
I
IN (200mA/div)
Time (400μs/div)
Condition V
IN=5V, lOUT=10mA, VOUT=3.3V
PSAVE Start-UP
Switching Frequency vs. Temperature
950
960
970
980
990
1000
1010
1020
1030
1040
1050
-50
10
50
110
TJ (°C)
VIN=5.5V
-30
-10
30
70
90
130
VIN=3.6V
VIN=2.7V



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