MB39A108 Ver la hoja de datos (PDF) - Fujitsu
Número de pieza
componentes Descripción
fabricante
MB39A108 Datasheet PDF : 45 Pages
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MB39A108
(Continued)
ON Duty vs. DTC terminal voltage
100
Ta = + 25 °C
95 VCC = 4 V
90 CTL = 3 V
85 FB = 2 V
RT = 6.8 kΩ
80 CT = 100 pF
75
70
65
Calculating
value
60
Measurement value
55
50
0.6 0.65 0.7 0.75 0.8 0.85 0.9
DTC terminal voltage VDTC (V)
Start power supply voltage vs. Timing resistor
2
Ta = − 30 °C
At evaluating Fujitsu
EV board system
Ta = + 25 °C
1.5
CTL = VCC
CT = 100 pF
1
1
10
100
Timing resistor RT (kΩ)
Error amplifier voltage gain and phase vs. Frequency
50
40
30
20
10
0
−10
−20
−30
−40
−50
1k
Av
ϕ
225
Ta = + 25 °C
VCC = 4 V
180
135
90
45
0
−45
−90
−135
−180
−225
10 k
100 k
1M
10 M
Frequency f (Hz)
2.0 V
240 kΩ
10 kΩ
1 µF+
IN
10 kΩ
37 −
2.4 kΩ
38 +
+
36
OUT
Error Amp1
1.5 V 1.0 V the same as other
channels
Power dissipation vs.
Operating ambient temperature (TSSOP-38P)
2000
1800
1680
1600
1400
1200
1000
800
600
400
200
0
−40 −20 0 +20 +40 +60 +80 +100
Operating ambient temperature Ta ( °C)
Power dissipation vs.
Operating ambient temperature (BCC-40P)
1200
1020
1000
800
600
400
200
0
−40 −20 0 +20 +40 +60 +80 +100
Operating ambient temperature Ta ( °C)
14
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