|
BD9137MUV Datasheet, PDF (3/17 Pages) Rohm – High Efficiency Step-down Switching Regulator | |||
|
◁ |
âCharacteristics dataãBD9137MUVã
2.0
ãVOUT=1.2Vã
1.6
1.2
0.8
0.4
0.0
0
Ta=25â
Io=3A
1
2
3
4
5
INPUT VOLTAGE:VCC[V]
Fig.3 Vcc - VOUT
1.22
ãVOUT=1.2Vã
1.21
1.20
1.19
VCC=5V
Io=0A
1.18
-40 -20 0 20 40 60 80 100
TEMPERATURE:Ta[â]
Fig. 6 Ta - VOUT
150
125
100
75
High side
50
Low side
25
VCC=3.3V
0
-40 -20 0 20 40 60 80 100
TEMPERATURE:Ta[â]
Fig.9 Ta â RONN, RONP
1.1
1
0.9
2.0
ãVOUT=1.2Vã
1.6
2.0
ãVOUT=1.2Vã
1.6
1.2
1.2
0.8
VCC=5V
0.4
Ta=25â
Io=0A
0.0
0
1
2
3
4
5
EN VOLTAGE:VEN[V]
Fig.4 VEN - VOUT
100
90 ãVOUT=1.2Vã
80
70
ãSLLMã
60
50
ãPWMã
40
30
20
10
0
1
2.0
VCC=5V
Ta=25â
10
100
1000
OUTPUT CURRENT:IOUT[mA]
Fig.7 Efficiency
10000
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[â]
Fig.10 Fig.11 Ta - VEN
0.8
0.4
0.0
0
1200
VCC=5V
Ta=25â
12345678
OUTPUT CURRENT:IOUT[A]
Fig.5 IOUT - VOUT
1000
800
600
400
200
VCC=5V
0
-40 -20 0 20 40 60 80 100
TEMPERATURE:Ta[â]
Fig.8 Ta - Fosc
400
350
300
250
200
150
100
50
VCC=5V
0
-40 -20 0 20 40 60 80 100
TEMPERATURE:Ta[â]
Fig.11 Ta - Icc
ãVOUT=1.2Vã
ãSLLM
VOUT=1.2Vã
VCC=PVCC
SW
=EN
0.8
0.7
2.7
Ta=25â
3.4
4.1
4.8
5.5
INPUT VOLTAGE:VCC[V]
Fig.12 Vcc - Fosc
ãPWM
SW
VOUT=1.2Vã
VOUT
VCC=5V
Ta=25â
Io=0A
VOUT
VCC=5V
Ta=25â
Fig.13 Soft start waveform
ãVOUT=1.2Vã
VOUT
72mV
Fig.14 SW waveform Io=10mA
ãVOUT=1.2Vã
VOUT
73mV
VOUT
IOUT
VCC=5V
Ta=25â
Fig.15 SW waveform Io=10mA
IOUT
VCC=5V
Ta=25â
Fig. 16 Transient Response
Io=1â3A(10μs)
3/16
VCC=5V
Ta=25â
Fig.17 Transient Response
Io=3â1A(10μs)
|
▷ |