BD8312HFN_11 Datasheet, PDF (6/15 Pages) Rohm – Output 1.5A or Less High-efficiency Step-down Switching Regulator with Built-in Power MOSFET

BD8312HFN
Technical Note
800
ID=500mA
600
400
200
0
-40
0
40
80
120
TEMPARATURE [℃]
Fig.12. Pch FET ON resistance
temperature property
3.0
2.5
2.0
Ta=85℃
Ta=25℃
1.5
1.0
Ta=-25℃
0.5
0.0
0.0
1.0
2.0
Io [A]
Fig.15.PchFET ON resistance
Io property [VCC=4.0V]
1000
800
ID=500mA
600
400
200
0
3
6
9
12
15
VCC [V]
Fig.13. Pch FET ON resistance
power supply property
3.0
2.5
Ta=85℃
2.0
Ta=25℃
1.5
1.0
Ta=-25℃
0.5
0.0
0.0
1.0
2.0
Io [A]
Fig.14.PchFET ON resistance
Io property [VCC=3.5V]
3.0
2.5
2.0
Ta=25℃
Ta=85℃
1.5
1.0
Ta=-25℃
0.5
0.0
0.0
1.0
2.0
Io [A]
Fig.16.PchFET ON resistance
Io property [VCC=4.5V]
3.0
2.5
2.0
Ta=85℃
Ta=25℃
1.5
1.0
0.5
Ta=-25℃
0.0
0.0
1.0
2.0
Io [A]
Fig.17.PchFET ON resistance
Io property [VCC=5.0V]
2.5
2.0
ON
1.5
1.0
-50
OFF
0
50
100
150
Ta [℃]
1000
800
600
400
200
0
-40
0
40
80
120
TEMPARATURE [℃]
Fig.18. STB
threshold temperature property
Fig.19. Circuit current
temperature property
1000
800
600
400
200
0
0
2
4
6
8
10 12 14
VCC [V]
Fig.20. Circuit current
voltage property
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6/14
2011.04 - Rev.D