bd8621efv ROHM Co. Ltd., bd8621efv Datasheet - Page 13

• Manufacturer Part Number: bd8621efv
• Description: Built-in 1ch Fet Synchronous Rectification Type Dc/dc Converters
• Manufacturer: ROHM Co. Ltd.

Fig.14
Fig.20 Terminal EN H voltage-temperature characteristic
600.0
590.0
580.0
570.0
560.0
550.0
540.0
530.0
520.0
510.0
500.0
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
100.0
Fig.18 NMOS on resistance-power-supply voltage
Fig.16 PMOS on resistance-power-supply voltage
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
-25
2.5
2.5
2.5
Switching frequency-power-supply voltage characteristic
Ta = 25℃
3
3
3
0
AMB IE NT T E MP E R AT UR E : T a [℃]
INP UT VO L T AG E : Vin [V]
INP UT VO L T AG E : V in [V]
3.5
3.5
3.5
INPUT VOLTAGE : Vin [V]
25
4
4
4
50
4.5
4.5
4.5
VIN = 3.3V
Ta = 25℃
Ta = 25℃
75
5
5
5
5.5
5.5
5.5
100
13 / 14
Fig.21 Circuit current-power-supply voltage characteristic
Fig.17 PMOS on resistance-temperature characteristic
Fig.19 NMOS on resistance-temperature characteristic
600.0
590.0
580.0
570.0
560.0
550.0
540.0
530.0
520.0
510.0
500.0
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
Fig.15
110.00
100.00
90.00
80.00
70.00
60.00
50.00
40.00
30.00
-25
-25
400.0
350.0
300.0
250.0
200.0
150.0
100.0
50.0
0.0
-25
2.5
VIN = 3.3V
VIN = 3.3V
Ta = 25℃
Switching frequency-temperature characteristic
VIN = 3.3V
0
0
3
0
AMB IE NT T E MP E R AT UR E : T a [℃]
AMB IE NT T E MP E R AT UR E : T a [℃]
AMB IE NT T E MP E R AT UR E : T a [℃]
3.5
INPUT VOLTAGE : Vin [V]
25
25
25
4
50
50
50
4.5
V
V
SW = High
FB
FC
= 0.83V
= 1.0V
75
75
75
5
5.5
100
100
100