Fujitsu MB3887 Power Supply User Manual


 
MB3887
13
(Continued)
1 M
100 k
10 k
10 100 1000
Ta = +25 °C
VCC = 19 V
CTL = 5 V
340
330
320
310
300
290
280
270
260
0 5 10 15 20 25
Ta = +25 °C
CTL = 5 V
RT = 47 k
320
315
310
305
300
295
290
285
280
275
270
265
260
40 20 0 20 40 60 80 100
VCC = 19 V
CTL = 5 V
RT = 47 k
4.25
2.24
4.23
2.22
4.21
4.20
4.19
4.18
4.17
4.16
4.15
40 20 0 20 40 60 80 100
VCC = 19 V
CTL = 5 V
Triangular wave oscillation frequency
vs. Timing resistor
Triangular wave oscillation
frequency f
OSC (Hz)
Timing resistor RT (k)
Triangular wave oscillation frequency
vs. Power supply voltage
Triangular wave oscillation
frequency f
OSC (kHz)
Power supply voltage VCC (V)
Triangular wave oscillation frequency
vs. Ambient temperature
Triangular wave oscillation
frequency f
OSC (kHz)
Ambient temperature Ta ( °C)
Error amplifier threshold voltage
vs. Ambient temperature
Error amplifier threshold
voltage V
TH (V)
Ambient temperature Ta ( °C)