BD9302FP-E Datasheet, PDF (4/17 Pages) Rohm – A wide input voltage range of 6 V to 18 V, Easy switching frequency setting in the range of 200 k to 2.5 MHz.

Reference characteristics data
0.66
0.65
0.64
0.63
0.62
0.61
0.60
0.59
0.58
0.57
0.56
0.55
0.54
0.53
0.52
0.51
0.50
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 85
AMBIENT TEMPERATURE : Ta [˚C]
Fig.2
Feedback voltage –
Ambient temperature
800
750
700
650
600
550
500
450
400
350
300
250
200
150
100
50
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 85
AMBIENT TEMPERATURE : Ta [˚C]
Fig.3
Switching frequency –
Ambient temperature
8.0
7.5
7.0
6.5
6.0
5.5
5.0
85˚C
4.5
4.0
3.5
3.0
2.5
2.0
1.5
-40˚C
25˚C
1.0
0.5
0.0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
INPUT VOLTAGE : VCC [V]
Fig.4
Power supply voltage –
Circuit current
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 85
AMBIENT TEMPERATURE : Ta [˚C]
Fig.5
SW ON resistance –
Ambient temperature
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 85
AMBIENT TEMPERATURE : Ta [˚C]
Fig.6
SWL ON resistance –
Ambient temperature
100000
10000
1000
100
10
10
100
TIMING RESISTANCE : RT [kΩ]
Fig.7
Setting resistance –
Switching frequency
100
90
80
70
60
50
40
30
20
10
0
200
1000
2000
SWITCHING FREQUENCY : FSW [kHz]
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
6 7 8 9 10 11 12 13 14 15 16 17 18
INPUT VOLTAGE : VCC [V]
Fig.8
Fig.9
Switching frequency – MAX Duty Switching frequency – Power supply voltage
100
90
80
70
60
50
40
30
20
10
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8
OUTPUT CURRENT : IO [A]
Fig.10
Output current – Efficiency
(*) The data shown above represent real values sampled but not guarantee values.
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