BD8621EFV Datasheet, PDF (13/15 Pages) Rohm – Built-in 1ch FET Synchronous Rectification Type DC/DC converters

600.0
590.0
580.0
Ta = 25℃
570.0
560.0
550.0
540.0
530.0
520.0
510.0
500.0
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE : Vin [V]
Fig.14 Switching frequency-power-supply voltage characteristic
100.0
90.0
Ta = 25℃
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
2.5
3
3.5
4
4.5
5
5.5
INP UT VO L T AG E : V in [V]
Fig.16 PMOS on resistance-power-supply voltage
100.0
90.0
Ta = 25℃
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
2.5
3
3.5
4
4.5
5
5.5
INP UT VO L T AG E : Vin [V]
Fig.18 NMOS on resistance-power-supply voltage
1.00
0.90
VIN = 3.3V
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
-25
0
25
50
75
100
AMB IE NT T E MP E R AT UR E : T a [℃]
Fig.20 Terminal EN H voltage-temperature characteristic
600.0
590.0
VIN = 3.3V
580.0
570.0
560.0
550.0
540.0
530.0
520.0
510.0
500.0
-25
0
25
50
75
100
AMB IE NT T E MP E R AT UR E : T a [℃]
Fig.15 Switching frequency-temperature characteristic
110.00
100.00
VIN = 3.3V
90.00
80.00
70.00
60.00
50.00
40.00
30.00
-25
0
25
50
75
100
AMB IE NT T E MP E R AT UR E : T a [℃]
Fig.17 PMOS on resistance-temperature characteristic
90.00
80.00
VIN = 3.3V
70.00
60.00
50.00
40.00
30.00
20.00
10.00
-25
0
25
50
75
100
AMB IE NT T E MP E R AT UR E : T a [℃]
Fig.19 NMOS on resistance-temperature characteristic
400.0
350.0
Ta = 25℃
300.0
250.0
200.0
150.0
V_FB = 0.83V
100.0
V_FC = 1.0V
50.0
SW = High
0.0
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE : Vin [V]
Fig.21 Circuit current-power-supply voltage characteristic
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