BU90054GWZ Datasheet, PDF (7/18 Pages) Rohm – Fast transient response

BU90054GWZ
MODE
2us
5V/div
Vout
50mV/div
ac coupled
LX
200mA/div
Figure 13. Mode Change Response
MODE : Low to High
100
90
80
70
60
50
40
30
20
10
0
0.1
VIN=2.7V
VIN=3.6V
VIN=4.2V
1
10
100
Load current[mA]
1000
Figure 14. Efficiency vs Load current
PWM/PFM Auto mode
1.854
1.836
1.818
VIN=2.7V
VIN=3.6V
VIN=4.2V
1.800
1.782
1.764
0
200
400
600
800
Load current[mA]
1000
Figure 15. Load regulation
PWM/PFM Auto mode
100
95
90
85
80
75
70
65
60
2.5
3
3.5
4
4.5
5
5.5
VIN [V]
Figure 16. Efficiency vs VIN
PWM/PFM Auto mode, Iout=125mA
L : DFE252012C1R0
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TSZ22111・15・001
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TSZ02201-0F1F0AG00060-1-2
8.Dec.2014 Rev.002