TL1454A_14 Datasheet, PDF (19/25 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
STANDBY SUPPLY CURRENT
vs
SUPPLY VOLTAGE
6
VCC = 6 V
RT = Open
CT = 1.5 V
5 _{COMP1, COMP2 = 1.25 V}
No Load
TA = 25°C
4
STANDBY SUPPLY CURRENT
vs
FREE-AIR TEMPERATURE
6
VCC = 6 V
CT = 1.5 V
RT = Open
5 _{COMP1, COMP2 = 1.25 V}
No Load
4
3
3
2
2
1
0
5
10
15
20
25
VCC − Supply Voltage − V
Figure 28
REFERENCE VOLTAGE
vs
SUPPLY VOLTAGE
1.5
TA = 25°C
1
0.5
0
0
5
10
15
20
25
VCC − Supply Voltage − V
Figure 30
1
− 50
1.27
0
50
100
TA − Free-Air Temperature − °C
Figure 29
REFERENCE VOLTAGE
vs
SUPPLY VOLTAGE
1.26
1.25
1.24
1.23
0
IO = 1 mA
TA = 25°C
5
10
15
20
25
VCC − Supply Voltage − V
Figure 31
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19