FUJITSU MB3878 - Manual (Page 10)

MB3878
10
(Continued)
Ta
= +
25
°
C
VCC
=
19 V
CTL
=
5 V
1 M
100 k
10 k
10 k 100 k 1 M
Ta = + 25 ° C
CTL
=
5 V
RT = 47 k Ω
340
330
320
310
300
290
280
270
260
250
240
0 5 10 15 20 25
VCC
=
19 V
CTL = 5 V
RT
=
47 k
Ω
340
330
320
310
300
290
280
270
260
250
240
− 40 − 20 0 20 40 60 80 100
VCC = 19 V
CTL
=
5 V
5.0
4.0
3.0
2.0
1.0
0.0
−
1.0
−
2.0
− 3.0
− 4.0
−
5.0
−
40
−
20 0 20 40 60 80 100
Triangular wave oscillator frequency vs.
timing resistor
Timing resistor R
T
(
Ω
)
Triangular wave oscillator frequency vs.
power supply voltage
Power supply voltage V
CC
(V)
Triangular wave oscillator frequency
Triangular wave oscillator
frequency f
OSC
(kHz)
Ambient temperature Ta (
°
C)
Error amplifier threshold voltage vs.
ambient temperature (Error Amp.3)
Error amplifier threshold voltage
∆
V
TH
(
%
)
Ambient temperature Ta (
°
C)
Triangular wave oscillator frequency
f OSC
(Hz)
Triangular wave oscillator frequency
f OS
C
(kHz)