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SC4525CSETRT Datenblatt(PDF) 7 Page - Semtech Corporation

Teilenummer SC4525CSETRT
Bauteilbeschribung  28V 3A Step-Down Switching Regulator
PDF  22 Pages
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Hersteller  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4525CSETRT Datenblatt(HTML) 7 Page - Semtech Corporation

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SC4525C
7
Typical Characteristics
Efficiency
40
45
50
55
60
65
70
75
80
85
90
0
0.5
1
1.5
2
2.5
3
Load Current (A)
1MHz, VIN =12V
D2 =B320A
V
O =5V
V
O =3.3V
V
O =2.5V
V
O =1.5V
Efficiency
40
45
50
55
60
65
70
75
80
85
90
0
0.5
1
1.5
2
2.5
3
Load Current (A)
1MHz, VIN=24V
D2 =B330A
V
O =5V
VO =3.3V
V
O =2.5V
Feedback Voltage vs Temperature
0.97
0.98
0.99
1.00
1.01
1.02
-50 -25
0
25
50
75 100 125
Temperature (oC)
VIN =12V
Foldback Frequency vs VFB
0
0.25
0.5
0.75
1
1.25
0.00
0.20
0.40
0.60
0.80
1.00
VFB (V)
ROSC =73.2k
ROSC =12.1k
TA =25oC
Frequency Setting Resistor
vs Frequency
1
10
100
1000
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2
Frequency (MHz)
VIN =12V
Frequency vs Temperature
0.8
0.9
1.0
1.1
1.2
-50 -25
0
25
50
75
100 125
Temperature (OC)
ROSC =73.2k
ROSC =12.1k
BST Pin Current vs Switch Current
0.0
25.0
50.0
75.0
100.0
0
0.5 1
1.5 2
2.5 3
3.5 4
Switch Current (A)
-40oC
125oC
VIN =12V
VBST =15V
Switch Saturation Voltage
vs Switch Current
50
100
150
200
250
300
350
400
450
500
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
Switch Current (A)
-40oC
125oC
25oC
Switch Current Limit vs Temperature
3.2
3.6
4.0
4.4
4.8
5.2
-50 -25
0
25
50
75 100 125
Temperature (oC)



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