Fujitsu MB39C026 Handbuch - Seite 13

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Fujitsu MB39C026 Handbuch
Fujitsu ASSP Product
Power Management
(8) Load Transients
Test Condition:
VIN=EN1=EN2=3.7V; VO1=1.2V; C1=C2=4.7uF; VO2=3.3V; C4=C5=1uF
IO1
IO1=10mA to 400mA
500mA/div
VO1
100mV/div
VO2
20mV/div
CH1 Load Transients
(9) Startup Sequence
Test Condition:
VIN=EN1=EN2=3.7V;
VO1=1.2V; C1=C2=4.7uF; IO1=250mA; VO2=3.3V; C4=C5=1uF; IO2=150mA
VIN
2V/div
IO1=250mA
VO1
2V/div
IO2=150mA
VO2
2V/div
Startup Waveform
MB39C026 Evaluation Board
IO2=150mA
20us/div
50us/div
IO2
200mA/div
IO2=10mA to 250mA
VO2
20mV/div
VO1
20mV/div
CH2 Load Transients
POR
2V/div
IO1=250mA
VO1
2V/div
IO2=150mA
VO2
2V/div
POR Waveform
13/14
IO1=250mA
10us/div
20ms/div