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BD9778HFP Folha de dados(PDF) 4 Page - Rohm

Nome de Peças BD9778HFP
Descrição Electrónicos  Flexible Step-down Switching Regulators with Built-in Power MOSFET
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Fabricante Electrônico  ROHM [Rohm]
Página de início  http://www.rohm.com
Logo ROHM - Rohm

BD9778HFP Folha de dados(HTML) 4 Page - Rohm

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Technical Note
Reference data
Fig.1 Output reference voltage vs.
Ambient temprature(All series)
Fig.2 Frequency vs. Ambient
temperature(All series)
Fig.3 Standby current(BD9781HFP)
Fig.5 Standby current(BD9001F)
Fig.6 Circuit current(BD9781HFP)
Fig.8 Circuit current(BD9001F)
Fig.9 ON resistance VIN=5V(BD9781HFP)
Fig.11 ON resistanceVIN=13.2V (BD9781HFP)
0.980
0.985
0.990
0.995
1.000
1.005
1.010
1.015
1.020
-25
-50
0
25
50
75
100
AMBIENT TEMPERATURE : Ta[
]
125
0
100
200
300
400
500
600
-25
-50
0
25
50
75
100
AMBIENT TEMPERATURE : Ta[
]
125
910kΩ
91kΩ
390kΩ
39kΩ
0
1
2
3
4
5
6
7
8
9
10
5
010
15
20
25
30
40
INPUT VOLTAGE : VIN[V]
35
125
VCC=12V
Istb=0.14µA
25
125
25
–40
-40
Fig.7 Circuit current(BD9778F/HFP)
1
0
5
010
15
20
25
30
40
INPUT VOLTAGE : VIN[V]
35
2
3
4
-40
25
125
-40
25
125
1
0
5
010
15
20
25
30
40
INPUT VOLTAGE : VIN[V]
35
2
3
4
Fig.10 ON resistance VIN=7V (BD9781HFP)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0.5
0.0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
OUTPUT CURRENT : IO[A]
Ta=25
Ta=125
Ta=-40
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0.5
0.0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
OUTPUT CURRENT : IO[A]
Ta=25
Ta=125
Ta=-40
4.5
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0.5
0.0
1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT CURRENT : IO[A]
Ta=25
Ta=125
Ta=-40
Fig.4 Standby current(BD9778F/HFP)
5
010
15
20
25
30
40
35
INPUT VOLTAGE : VIN[V]
INPUT VOLTAGE : VIN[V]
INPUT VOLTAGE : VIN[V]
0
1
2
3
4
5
6
7
8
9
10
125
25
-40
VCC=12V
Istb=0.14µA
60
60
50
40
30
20
10
0
10
20
30
40
50
40
30
20
10
0
1
2
3
4
125
-40
25
Fig.12 ON resistance VIN=5V (BD9778F/HFP)
OUTPUT CURRENT : IO[A]
0.5
0.0
1.0
1.5
2.0
2.5
Ta=-40
Ta=25
Ta=125
2010.02 -
Rev. B
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
BD9778F, BD9778HFP, BD9001F, BD9781HFP


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