BD91361MUV Datasheet, PDF (4/18 Pages) Rohm – Output 2A More High-efficiency Step-down Switching Regulator with Built-in Power MOS FET

BD91361MUV
●Characteristic curves (Reference data)
2.0
【VOUT=1.2V】
1.6
1.2
0.8
0.4
0.0
0
Ta=25℃
Io=3A
1
2
3
4
5
INPUT VOLTAGE:VCC[V]
Fig.3 Vcc-VouT
2.0
【VOUT=1.2V】
1.6
1.2
0.8
0.4
0.0
0
VCC=5V
Ta=25℃
Io=0A
1
2
3
4
5
EN VOLTAGE:VEN[V]
Fig.4 VEN-VOUT
1.25
1.24 【VOUT=1.2V】
1.23
1.22
1.21
1.20
1.19
1.18
1.17
VCC=5V
1.16
Io=0A
1.15
-40 -20 0 20 40 60 80 100
TEMPERATURE:Ta[℃]
Fig. 6 Ta-VOUT
100
【VOUT=1.2】
90
80
70
60
50
40
30
10
VCC=5V
Ta=25℃
100
1000
OUTPUT CURRENT:IOUT[mA]
Fig.7 Efficiency
10000
Technical Note
2.0
【VOUT=1.2V】
1.6
Ta=25℃
1.2
VCC=2.7V
0.8
0.4
0.0
0
VCC=
5.5V
2
4
6
8
10
OUTPUT CURRENT:IOUT[A]
Fig.5 IOUT-VOUT
1200
1000
800
600
400
200
VCC=5V
0
-40 -20 0 20 40 60 80 100
TEMPERATURE:Ta[℃]
Fig.8 Ta-Fosc
80
High side
70
60
Low side
50
VCC=3.3V
40
-40 -20
0 20 40 60 80 100
TEMPERATURE:Ta[℃]
Fig.9Ta-RONN,RONP
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
VCC=5V
0.2
0.0
-40 -20 0 20 40 60 80 100
TEMPERATURE:Ta[℃]
Fig.10 Ta-VEN
400
350
300
250
200
150
100
50
VCC=5V
0
-40 -20 0 20 40 60 80 100
TEMPERATURE:Ta[℃]
Fig.11 Ta-ICC
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
4/17
2010.06 - Rev.A