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SC4530 数据表(PDF) 6 Page - Semtech Corporation

部件名 SC4530
功能描述  30V, 300mA Output Micropower Step-Down Switching Regulator
PDF  23 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC4530 数据表(HTML) 6 Page - Semtech Corporation

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6
Peak and Valley Current DC
Thresholds vs Temperature(1)
0.30
0.35
0.40
0.45
0.50
0.55
0.60
-50
-25
0
25
50
75
100 125
Temperature (oC)
VBST = 15V
VIN = 10V
Valley
Peak
VFB = 0
SC4530
Switch Saturation Voltage
vs Switch Current
0
100
200
300
400
0.0
0.1
0.2
0.3
0.4
0.5
0.6
Switch Current (A)
VIN = 10V
VBST = 15V
125oC
-55oC
25oC
BST Pin Current vs Switch Current
0
5
10
15
0.0
0.1
0.2
0.3
0.4
0.5
0.6
Switch Current (A)
VIN = 10V
VBST = 15V
25oC
-55oC
125oC
Typical Characteristics
Minimum Off Time vs Temperature
400
450
500
550
600
650
700
-50
-25
0
25
50
75
100 125
Temperature (oC)
VBST = 15V
VIN = 10V
Maximum On Time vs Temperature
10
11
12
13
14
15
-50
-25
0
25
50
75
100 125
Temperature (oC)
VBST = 15V
VIN = 10V
Minimum Bootstrap
Voltage vs Temperature
1.2
1.4
1.6
1.8
2.0
2.2
-50
-25
0
25
50
75
100 125
Temperature (oC)
ISW = -0.39A
Notes:
() Circuit propagation delays and the error amplifier output voltage ripples may cause the actual inductor valley current to differ from its DC value.
Efficiency vs Load Current
VOUT = 3.3V
30
40
50
60
70
80
90
0.1
1.0
10.0
100.0
1000.0
Load Current (mA)
VIN = 5V
VIN = 24V
VIN = 12V
Coilcraft
LPS4018-333ML
Efficiency vs Load Current
VOUT = 2.5V
30
40
50
60
70
80
90
0.1
1.0
10.0
100.0
1000.0
Load Current (mA)
VIN = 5V
VIN = 24V
VIN = 12V
Coilcraft
LPS4018-333ML
Feedback Voltage vs Temperature
1.20
1.21
1.22
1.23
1.24
-50
-25
0
25
50
75
100 125
Temperature(oC)
VIN = 10V



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