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SC4524ASETRT 数据表(PDF) 7 Page - Semtech Corporation

部件名 SC4524ASETRT
功能描述  28V 2A Step-Down Switching Regulator
PDF  18 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

SC4524ASETRT 数据表(HTML) 7 Page - Semtech Corporation

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SC4524A
7
Typical Characteristics
(1)
Efficiency
40
45
50
55
60
65
70
75
80
85
90
0
0.5
1
1.5
2
Load Current (A)
SC4524A/B
VO=5V
VO=3.3V
VO=2.5V
VO=1.5V
1MHz, VIN =12V
D2=20BQ030
(7)
Switch Saturation Voltage
vs Switch Current
50
100
150
200
250
300
0.0
0.5
1.0
1.5
2.0
2.5
Switch Current (A)
SS270 REV 6-7
-40oC
125oC
25oC
(4)
Frequency Setting Resistor
vs Frequency
1
10
100
1000
0
0.5
1
1.5
2
2.5
Frequency (MHz)
SS270 REV 6-7
VIN =12V
(3)
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
(9)
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
Switch Current (A)
SS270 REV 6-7
-40oC
125oC
VIN =12V
VBST =15V
(6)
Foldback Frequency vs VFB
0
0.25
0.5
0.75
1
1.25
0.0
0.2
0.4
0.6
0.8
1.0
VFB (V)
TA =25oC
ROSC=12.1k
ROSC=93.1k
24Vin Eff.
Efficiency
40
45
50
55
60
65
70
75
80
85
90
0
0.5
1
1.5
2
Load Current (A)
SC4524A
1MHz, VIN =24V
D2=20BQ030
VO=5V
VO=3.3V
VO=2.5V
(8)
Switch Current Limit vs Temperature
2.5
3.0
3.5
4.0
4.5
-50 -25
0
25
50
75 100 125
Temperature (oC)
SS270 REV 6-7
(5)
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
ROSC=12.1k
ROSC=93.1k



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