SC1452 Просмотр технического описания (PDF) - Semtech Corporation
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SC1452 Datasheet PDF : 15 Pages
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SC1452
POWER MANAGEMENT
Applications Information (Cont.)
3) Connect all ground connections directly to the ground
plane. If there is no ground plane, connect to a common
local ground point before connecting to board ground.
Typical Characteristics
Output Voltage vs. Output Current
vs. Junction Temperature
0
TJ = 25°C
-2
-4
-6
TJ = -40°C
-8
-10
VIN = VOUT + 1V
-12
0
25
50
TJ = 125°C
75
100
125
150
IOUT (mA)
Dropout Voltage vs. Output Current
vs. Junction Temperature
200
175
150
125
100
75
50
25
0
0
Top to bottom:
TJ = 125°C
TJ = 25°C
TJ = -40°C
25
50
75
100
125
150
IOUT (mA)
Enable Input Voltage vs. Junction Temperature
vs. Input Voltage
1.6
VIH @ VIN = 6.5V
1.4
1.2
VIH @ VIN = 4V
1.0
VIL @ VIN = 6.5V
0.8
VIL @ VIN = 4V
0.6
0.4
-50
-25
0
25
50
75
100
125
TJ (°C)
Output Voltage vs. Junction Temperature
vs. Output Current
0
-2
-4
Top to bottom:
-6
IOUT = 1mA
IOUT = 50mA
-8
IOUT = 100mA
IOUT = 150mA
-10
VIN = VOUT + 1V
-12
-50
-25
0
25
50
TJ (°C)
75
100
125
Dropout Voltage vs. Junction Temperature
vs. Output Current
200
175
150
IOUT = 150mA
125
100
75
50
IOUT = 50mA
25
0
-50
-25
0
25
50
75
100
125
TJ (°C)
2006 Semtech Corp.
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