MB39A112 Datasheet, PDF (9/35 Pages) Fujitsu Component Limited. – 3-ch DC/DC Converter IC

MB39A112
Triangular Wave Upper/Lower Limit Voltage vs.
Triangular Wave Oscillation Frequency
2.8
Ta = +25 °C
VCC = 12 V
2.6 CT = 100 pF
2.4
Upper limit
2.2
Lower limit
2.0
1.8
0 500 1000 1500 2000 2500 3000
Triangular wave oscillation frequency
fosc (kHz)
Triangular Wave Oscillation Frequency vs.
Ambient Temperature
1400
1350
1300
1250
1200
1150
1100
1050
1000
−40 −20 0
VCC = 12 V
RT = 10 kΩ
CT = 100 pF
20 40 60 80 100
Ambient temperature Ta ( °C)
Triangular Wave Upper/Lower Limit Voltage vs.
Ambient Temperature
2.8
VCC = 12 V
2.6
RT = 10 kΩ
CT = 100 pF
2.4
Upper limit
2.2
Lower limit
2.0
1.8
−40 −20 0 20 40 60 80 100
Ambient temperature Ta ( °C)
Triangular Wave Oscillation Frequency vs.
Power Supply Voltage
1400
1350
1300
1250
1200
1150
1100
1050
1000
0
Ta = +25 °C
RT = 10 kΩ
CT = 100 pF
5 10 15 20 25 30
Power supply voltage VCC (V)
(Continued)
9