FUJITSU MB3887 - Manual (Page 13)

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
Ω
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
Ω
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 R
T
(k
Ω
)
Triangular wave oscillation frequency
vs. Power supply voltage
Triangular wave oscillation
frequency f
OS
C
(kHz)
Power supply voltage V
CC
(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)