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SC4502 Просмотр технического описания (PDF) - Semtech Corporation
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Компоненты Описание
Список матч
SC4502
1.4Amp, 2MHz Step-Up Switching Regulator with Soft-Start
Semtech Corporation
SC4502 Datasheet PDF : 19 Pages
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SC4502/SC4502H
POWER MANAGEMENT
Typical Characteristics
V
IN
Current vs SHDN Pin Voltage
1.2
V
IN
= 2V
1
125ºC
0.8
0.6
0.4
0.2
0
0
-40ºC
125ºC
-40ºC
0.5
1
1.5
SHDN Voltage (V)
V
IN
Current vs SHDN Pin Voltage
0.1
V
IN
= 2V
0.08
25ºC
0.06
0.04
0.02
0
0
0.2 0.4 0.6 0.8
1
1.2
SHDN Voltage (V)
Shutdown Pin Current
vs Temperature
-3
V
SHDN
= 1.25V
-4
V
IN
= 2V
-5
V
IN
= 12V
-6
-50 -25
0 25 50 75 100 125
Temperature (ºC)
Soft-Start Charging Current
vs Temperature
2
V
SS
= 0.3V
1.8
1.6
1.4
1.2
1
-50 -25
0 25 50 75 100 125
Temperature (ºC)
Transconductance vs Temperature
80
V
IN
= 2V
70
60
50
40
30
-50 -25
0 25 50 75 100 125
Temperature (ºC)
Switch Current Limit
vs Temperature
2.4
2.2
2
1.8
1.6
-50 -25
0
25 50 75 100
Temperature (ºC)
2005 Semtech Corp.
6
www.semtech.com
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