Datasheet

BD9540EFV
Technical Note
5/17
www.rohm.com
2009.04 - Rev.B
© 2009 ROHM Co., Ltd. All rights reserved.
●Reference Data
0
0.5
1
1.5
2
2.5
-20 0 20 40 60 80 100
Ta [
℃
]
IIN [mA]
0
20
40
60
80
100
0.01 0.1 1 10
IOUT [A]
Efficiency [%]
80
90
100
110
120
130
-20 0 20 40 60 80 100
Ta [
℃
]
VILIM [mV]
Fig.1 Transient Respnse
(V
IN=12V VOUT2=1.05V)
Fig.5 V
OUT wake up
(Io=0A)
Fig.6 V
OUT wake up
(Io=4A)
Fig.2 Transient Respnse
(V
IN=12V VOUT2=1.05V)
(2μs/div)
VOUT2
50[mV/div]
SW1
10[V/div]
(2μs/div)
(2μs/div)
Fig.7 OCP and SCP
Fig.8 Ta-V
ILIM
Fig.9 IOUT-Efficiency
Fig.3 Transient Respnse
(V
IN=12V VOUT1=3.3V)
Fig.4 Transient Respnse
(V
IN=12V VOUT1=3.3V)
(2μs/div)
RILIM=100kΩ
SW2
10[V/div]
IOUT2
2[A/div]
VOUT2
50[mV/div]
SW1
10[V/div]
SW2
10[V/div]
IOUT2
2[A/div]
VOUT1
50[mV/div]
SW1
10[V/div]
SW2
10[V/div]
IOUT2
2[A/div]
VOUT1
50[mV/div]
SW1
10[V/div]
SW2
10[V/div]
IOUT2
2[A/div]
EN
50[V/div]
VOUT
0.5[V/div]
SW
10[V/div]
IL
2[A/div]
EN
50[V/div]
VOUT
0.5[V/div]
SW
10[V/div]
IL
2[A/div]
1msec(typ)
1msec(typ)
HG, LG
20[V/div]
V
OUT
1[V/div]
IL
5[A/div]
VIN=12V
VMOSFET:MP6K61
Vo=1.8V
Vo=1.2V
28μsec(typ)
Fig.10 Ta-IIN
Fig.11 Ta-I
IN_STB Fig.12 VIN-IIN
0
2
4
6
8
10
-20 0 20 40 60 80 100
Ta [
℃
]
IIN_STB [A]
0
0.5
1
1.5
2
2.5
0 5 10 15 20
VIN [V]
IIN [mA]
VIN=12V
VCC=VREG5V
EN1=EN2=3V
VIN=12V
VCC=VREG5V
EN1=EN2=0V
VCC=VREG5V
EN1=EN2=3V