TL1454CPW Datasheet, PDF (15/25 Pages) Texas Instruments – DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT

TL1454, TL1454Y
DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM)
CONTROL CIRCUIT
SLVS086B – APRIL 1995 – REVISED NOVEMBER 1997
TYPICAL CHARACTERISTICS
UVLO THRESHOLD VOLTAGE
vs
FREE-AIR TEMPERATURE
3.5
VIT(H)
3
VIL(L)
2.5
2
1.5
DUTY CYCLE
vs
DTC INPUT VOLTAGE
120
VCC = 6 V
CT = 120 pF
100
RT = 10 kΩ
TA = 25°C
80
60
40
20
1
– 50 – 25
0
25
50
75 100
TA – Free-Air Temperature – °C
Figure 14
ERROR-AMPLIFIER MAXIMUM OUTPUT VOLTAGE
vs
SOURCE CURRENT
2.5
VCC = 6 V
VID = 0.1 V
TA = 25°C
2
0
0
0.25 0.5 0.75
1
1.25 1.5
VI(DTC) – DTC Input Voltage – V
Figure 15
ERROR-AMPLIFIER MINIMUM OUTPUT VOLTAGE
vs
SINK CURRENT
2.5
VCC = 6 V
VID = 0.1 V
2
1.5
1.5
1
1
0.5
0.5
0
0
0
40
80
120
0
0.5
1
1.5
Source Current – µA
Sink Current – mA
Figure 16
Figure 17
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