BD9151MUV Datasheet, PDF (4/17 Pages) Rohm – Output 1.5A or Less High Efficiency Step-down Switching Regulator with Built-in Power MOSFET

BD9151MUV
●Characteristics data【BD9151MUV】
2.0
Ta=25℃
Io=0A
1.5
【VOUT1=1.8V】
1.0
【VOUT2=1.2V】
0.5
0.0
0
1
2
3
4
5
INPUT VOLTAGE:VCC[V]
Fig.3 VCC – VOUT1,VOUT2
2.0
1.5
1.0
0.5
0.0
0
【VOUT1=1.8V】
【VOUT2=1.2V】
VCC=3.3V
Ta=25℃
Io=0A
1
2
3
4
5
EN VOLTAGE:VEN[V]
Fig.4 VEN - VOUT
1.85
【VOUT1=1.8V】
1.83
1.80
1.78
1.75
-40
VCC=V3C.3CV=3.3V
Io=0AIo=0A
-20 _{TEM0 PERA2T0URE:4T0a[℃]} 60 80
Fig. 6 Ta-VOUT1
1.25
【【VVOOUUTT22==11.2.2VV設】定】
1.23
1.20
1.18
1.15
-40
VCC=3.3V
Io=0A
-20 0 20 40 60 80
TEMPERATURE:Ta[℃]
Fig. 7 Ta-VOUT1
100
Vcc=3.3V
90 _{【VOUT2=1.2V】}
80
70
60
50
40
30
20
10
0
1
Vcc=5V
【VOUT2=1.2V】
Ta=25℃
*VOUT1=1mA loaded
10
100
OUTPUT CURRENT:IOUT[mA]
1000
Fig.9 VOUT2 Efficiency
1.2
1.0
VCC=3.3V
0.8
-40 -20
0
20
40
60
80
TEMPERATURE:Ta[℃]
Fig.10 Ta- Fosc
300
275
VCC=3.3V
250
PMOS
225
200
175
150
NMOS
125
100
75
50
25
0
-40 -20 0 20 40 60 80 100
TEMPERATURE:Ta[℃]
Fig.12 Ta – RONN, RONP
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
VCC=3.3V
0.2
0.0
-40 -20
0
20 40 60 80
TEMPERATURE:Ta[℃]
Fig.13 Ta－EN1,EN2
Technical Note
2.0
【VOUT1=1.8V】
1.5
1.0 ^{【VOUT2=1.2V】}
0.5
VCC=3.3V
Ta=25℃
0.0
0
1
2
3
4
OUTPUT CURRENT:IOUT[A]
Fig.5 IOUT - VOUT
100
90 ^Vcc=3.3V
【VOUT1=1.8V】
80
70
60
50
Vcc=5V
40
【VOUT1=1.8V】
30
Ta=25℃
20
10
*VOUT2=1mA loaded
0
1
10
100
1000
OUTPUT CURRENT:IOUT[mA]
Fig.8 VOUT1 Efficiency
1.2
1.1
1
0.9
Ta=25℃
0.8
2.8
3.3
3.8
4.3
4.8
5.3
INPUT VOLTAGE:VCC[V]
Fig.11 VCC-Fosc
600
500
400
300
200
VCC=3.3V
100
0
-4 0 -2 0
0
20
40 60
80
T EM PER AT U R E:T a[℃ ]
Fig.14 Ta－Icc
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4/16
2009.08 - Rev.A