Fujitsu ASSP Product
9/14
Power Management
MB39C026 Evaluation Board
CH1 Test Condition:
EN1=VIN; EN2=0V
VO1=1.2V; C1=C2=4.7uF
(3) DC/DC Line Regulation
CH1 Test Condition:
EN1=VIN; EN2=0V
VO1=1.8V; C1=C2=4.7uF
CH1 Test Condition:
EN1=EN2=VIN;
VO1=1.8V; IO1=250mA; C1=C2=4.7uF
VO2=3.3V; IO2=150mA; C4=C5=1uF
(4) Switching Waveform
CH1 Test Condition:
EN1=EN2=VIN;
VO1=1.8V; IO1=20mA; C1=C2=4.7uF
VO2=3.3V; IO2=150mA; C4=C5=1uF
CH1 Line Regulation
1.1
1.12
1.14
1.16
1.18
1.2
1.22
1.24
1.26
1.28
1.3
3.2
3.7
4.2
4.7
5.2
VIN Input Voltage (V)
V
O
1
O
ut
pu
t V
ol
ta
ge
(V
)
IO1=0mA
IO1=300mA
IO1=600mA
VLx
5V/div
ILx
100mA/div
VO1
20mV/div
VO2
20mV/div
500ns/div
VLx
5V/div
ILx
100mA/div
VO1
20mV/div
VO2
20mV/div
5us/div
CH1 Line Regulation
1.7
1.72
1.74
1.76
1.78
1.8
1.82
1.84
1.86
1.88
1.9
3.2
3.7
4.2
4.7
5.2
VIN Input Voltage (V)
V
O
1
O
ut
pu
t V
ol
ta
ge
(V
)
IO1=0mA
IO1=300mA
IO1=600mA
