TL1454A_14 Datasheet, PDF (18/25 Pages) Texas Instruments – DUAL-CHANNEL PULSE-WIDTH-MODULATION (PWM) CONTROL CIRCUIT

TL1454A, TL1454AY
DUALĆCHANNEL PULSEĆWIDTHĆMODULATION (PWM)
CONTROL CIRCUIT
SLVS423 A− MAY 2002 − REVISED SEPTEMBER 2002
TYPICAL CHARACTERISTICS
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
6
VCC = 6 V
TA = 25°C
5
LOW-LEVEL OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
250
VCC = 6 V
IO = 8 mA
200
4
150
3
100
2
50
1
0
20
40
60
80
IOL − Low-Level Output Current − mA
Figure 24
LOW-LEVEL OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
3
VCC = 6 V
IO = 40 mA
2.5
2
0
−50 −25
0
25
50
75 100
TA − Free-Air Temperature − °C
Figure 25
AVERAGE SUPPLY CURRENT
vs
FREE-AIR TEMPERATURE
6
VCC = 6 V
RT = 10 kΩ
CT = 1.5 V
5 _{COMP1, COMP2 = 1.25 V}
No Load
4
1.5
3
1
2
0.5
−50 −25
0
25
50
75 100
TA − Free-Air Temperature − °C
Figure 26
1
−50 −25
0
25
50
75
100
TA − Free-Air Temperature − °C
Figure 27
18
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