BD9305AFVM Datasheet, PDF (4/15 Pages) Rohm – Single-output Step-up,High-efficiency Switching Regulator(Controller Type)

BD9306AFVM, BD9305AFVM
Electrical Characteristics (Unless otherwise specified,Ta=25℃)
250
200
Ta=85℃
Ta=25℃
150
100
50
Ta=-40℃
0
0.0 2.5 5.0 7.5 10.0 12.5
ENB VOLTAGE:VENB[V]
Fig.10 ENB Input Current
90
88
86
84
82
80
-40 -15 10
35
60
85
AMBIENT TEMPERATURE[℃]
Fig.13 Temperature vs MAX Duty
(BD9306AFVM)
125
100
75
50
25
0
0.0 0.5 1.0 1.5 2.0 2.5
COMP VOLTAGE:VCOMP[V]
Fig.11 COMP vs DUTY
(BD9305AFVM)
90
86
82
78
74
70
200 300 400 500 600 700 800
SWITCHING FREQUENCY[kHz]
Fig.14 Frequency vs MAX Duty
(BD9306AFVM)
ΔV=380mV
Io=500mA
VCC=12V Vo=16V
Fig.16 Load Response
(BD9306AFVM)
100
90
80
70
60
50
40
30
20
10
0
0.0
VCC=12V Vo=5V
Io=SWEEP
Fsw=220kHz
Ta=25℃
0.5
1.0
1.5
2.0
OUTPUT CURRENT[A]
Fig.17 Efficiency Characteristics
(BD9305AFVM)
Technical Note
125
100
75
50
25
0
0.0 0.5 1.0 1.5 2.0 2.5
COMP VOLTAGE:VCOMP[V]
Fig.12 COMP vs DUTY
(BD9306AFVM)
ΔV=166mV
Io=1A
VCC=12V Vo=5V
Fig.15 Load Response
(BD9305AFVM)
100
90
80
70
60
50
40
30
20
10
0
0.0
VCC=12V Vo=16V
Io=SWEEP
Fsw=220kHz
Ta=25℃
0.2 0.4 0.6 0.8 1.0
OUTPUT CURRENT[A]
Fig.18 Efficiency Characteristics
(BD9306AFVM)
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4/14
2009.05 - Rev.A