BD8621EFV_09 Datasheet, PDF (12/15 Pages) Rohm – FET Controller Type 3ch System Power Supply ICs

BD8621EFV
●Each characteristic reference data
VIN = 5V
Vout : 100mV/div
Technical Note
VIN = 5V
Io = 3A
Vout : 20mV/div
Io = 1A/div
Fig.7 Output load response
100
VIN = 3.3V
90
80
70
VIN = 5.0V
60
[%]
50
効率
40
30
VOUT = 1.2V
20
10
0
10
100
1000
Load current [mA]
Fig.9 Efficiency
10000
1.50
1.40
VIN = 5.0V
VOUT = 1.2V
1.30
1.20
1.10
1.00
0.0000
0.5000
1.0000
1.5000
2.0000
LOAD CURRENT [A]
2.5000
3.0000
Fig.11 Regulation
0.810
0.808 _{VIN = 3.3V}
0.806
0.804
0.802
0.800
0.798
0.796
0.794
0.792
0.790
-25
0
25
50
75
100
AMB IE NT T E MP E R AT UR E : T a [℃]
Fig.12 Reference voltage - Temperature characteristic
1usec/div
Fig.8 Output ripple
VIN = 2V/div
VOUT = 0.5V/div
SS = 2V/div
10msec/div
Fig.10 Soft start
5.0
4.8
4.5
VIN = 3.3V
4.3
4.0
3.8
3.5
3.3
3.0
-25
0
25
50
75
100
AMB IE NT T E MP E R AT UR E : T a [℃]
Fig.13 SS Charging current - Temperature characteristic
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2009.05 - Rev.A