BD9859EFJ Datasheet, PDF (5/16 Pages) Rohm – Simple Step-down Switching Regulators with Built-in Power MOSFET

BD9859EFJ
●Reference Data
(Unless otherwise specified, Ta=25℃，VCC=12V, Vo=5V,EN=3V)
0.6
0.5
0.4
0.3
0.2
VCC=14V
VCC=12V
0.1
VCC=7V
0.0
-60 -40 -20 0 20 40 60 80 100
Temp (°C)
6
5
4
Temp=85℃
Temp=25℃
3
2
Temp=-40℃
1
0
0
5
10
15
VCC(V)
Technical Note
6
5
4
VCC=12V
VCC=15V
3
2
VCC=7V
VCC=5V
1
0
-60 -40 -20 0 20 40 60 80 100
Temperature(°C)
Fig.3. Standby Current Temperature
Characteristics
6.0
5.0
High Threshold
4.0
Low Threshold
3.0
2.0
1.0
0.0
-60 -40 -20 0 20 40 60 80 100
Temp (°C)
Fig.4. Circuit Current Power supply Voltage
Characteristics
800
700
VCC=14V
600
VCC=12V
500
VCC=7V
400
300
200
100
0
-60 -40 -20 0 20 40 60 80 100
Temp (°C)
Fig.5. Circuit Current
Temperature Characteristics
120.0
100.0
80.0
VCC=14V
VCC=12V
60.0
VCC=7V
40.0
-60 -40 -20 0 20 40 60 80 100
Temp (°C)
Fig.6. UVLO Threshold
Temperature Characteristics
1.2
1.0
VCC=14V
0.8
VCC=12V
VCC=7V
0.6
0.4
0.2
0.0
-60 -40 -20 0 20 40 60 80 100
Temp (°C)
Fig.7. Oscillation Frequency
Temperature Characteristics
1.2
1.0
Temp=85°C
0.8
Temp=25°C
Temp=-40°C
0.6
0.4
0.2
0.0
0
5
10
15
VCC (V)
Fig.8. Max Duty Temperature
Characteristics
50
40
30
Temp=-40°C
20
Temp=25°C
10
0
Temp=85°C
-10
-20
-30
-40
-50
0
0.5
1
1.5
2
VFB (V)
Fig.9. FB Threshold Voltage Temperature
Characteristics
Fig.10. FB Threshold Power supply
Characteristics
Fig.11. FB Voltage - IVC Current
Characteristics
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5/15
2010.02 - Rev.A