BD9111NV_09 Datasheet, PDF (3/14 Pages) Rohm – Output 2A or More High Efficiency Step-down Switching Regulator with Built-in Power MOSFET

BD9111NV
●Characteristics data
5.0
4.5 ^Ta=25℃
Io=2A
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
1
2
3
4
5
INPUT VOLTAGE:VCC[V]
Fig.3 Vcc-Vout
2.0
1.5
1.0
0.5
0.0
0
VCC=5V
Ta=25℃
Io=0A
1
2
3
4
5
EN VOLTAGE:VEN[V]
Fig.4 Ven-Vout
Technical Note
5.0
4.0
3.0
2.0
1.0
VCC=5V
Ta=25℃
0.0
0
1
2
3
4
5
OUTPUT CURRENT:IOUT[A]
Fig.5 Iout-Vout
3.35
3.34
3.33
VCC=5V
3.32
Io=0A
3.31
3.30
3.29
3.28
3.27
3.26
3.25
-25
0
25
50
75
100
TEMPERATURE:Ta[℃]
Fig. 6 Ta-VOUT
100
90
80
70
60
50
40
30
20
10
0
1
VCC=5V
Ta=25℃
10
100
1000
OUTPUT CURRENT:IOUT[mA]
Fig.7 Efficiency
10000
1.20
1.15 VCC=5V
1.10
1.05
1.00
0.95
0.90
0.85
0.80
-25
0
25
50
75
100
TEMPERATURE:Ta[℃]
Fig.8 Ta-FOSC
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
-25
VCC=5V
PMOS
NMOS
0
25
50
75
100
TEMPERATURE:Ta[℃]
Fig.9 Ta-RONN, RONP
2.0
1.8
VCC=5V
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-25
0
25
50
75
100
TEMPERATURE:Ta[℃]
Fig.10 Ta-VEN
400
VCC=5V
350
300
250
200
150
100
50
0
-25
0
25
50
75
100
TEMPERATURE:Ta[℃]
Fig.11 Ta-ICC
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3/13
2009.05 - Rev.A