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SC4525DEVB 데이터시트(PDF) 7 Page - Semtech Corporation

부품명 SC4525DEVB
상세설명  18V, 3A, 350kHz Step-Down Switching Regulator
PDF  21 Pages
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제조업체  SEMTECH [Semtech Corporation]
홈페이지  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4525DEVB 데이터시트(HTML) 7 Page - Semtech Corporation

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SC4525D
7
Typical Characteristics
(1)12Vin Eff
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)
VIN=12V
D2=B320A
VO=3.3V
VO=2.5V
VO=1.5V
(7) Vcesat
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)
SS270 REV 6-7
-40oC
125oC
25oC
(4) Vref vs Temp
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)
SS270 REV 6-7
VIN =12V
(3) 3.3Vin Eff
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)
SC4525B
VIN=3.3V
D2=B320A
VO=2V
VO=1V
(9) BST Pin current
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
(6) Foldback Freq vs Temp
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)
SS270 REV 6-7
TA=25oC
(2) 5Vin Eff
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)
SC4525B
VIN=5V
D2=B320A
VO=2.5V
VO=3.3V
VO=1.5V
(8) OCP current
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)
SS270 REV 6-7
(5) Freq vs Temp
Frequency vs Temperature
0.8
0.9
1.0
1.1
1.2
-50 -25
0
25
50
75 100 125
Temperature (OC)
SS270 REV 6-7



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