TL598 Datasheet, PDF (9/10 Pages) Texas Instruments – PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL598
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS053C – FEBRUARY 1988 – REVISED JULY 1999
TYPICAL CHARACTERISTICS
100 k
40 k
10 k
4k
OSCILLATOR FREQUENCY AND
FREQUENCY VARIATION ^†
vs
TIMING RESISTANCE
–2%
–1%
0%
VCC = 15 V
0.001 µF
0.01 µF
AMPLIFIER VOLTAGE AMPLIFICATION
vs
FREQUENCY
80
VCC = 15 V
∆VO = 3 V
TA = 25°C
60
1k
0.1 µF
40
400
†
∆f = 1%
100
20
CT = 1 µF
40
10
1k
4 k 10 k
40 k 100 k 400 k 1 M
RT – Timing Resistance – Ω
† _{Frequency variation (∆f) is the change in predicted oscillator}
frequency that occurs over the full temperature range.
Figure 3
0
1k
10 k
100 k
1M
f – Frequency – Hz
Figure 4
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