TL5001 Datasheet, PDF (14/23 Pages) Texas Instruments – PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL5001, TL5001A
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS084E – APRIL 1994 – REVISED OCTOBER 1999
TYPICAL CHARACTERISTICS
AVERAGE SUPPLY CURRENT
vs
POWER-SUPPLY VOLTAGE
2
Rt = 100 kΩ
TA = 25 °C
1.5
AVERAGE SUPPLY CURRENT
vs
AMBIENT TEMPERATURE
1.3
VCC = 6 V
1.2
Rt = 100 kΩ
DT Resistance = 100 kΩ
1.1
1
1
0.9
0.5
0.8
0
0
10
20
30
40
VCC – Power-Supply Voltage – V
Figure 9
PWM TRIANGLE WAVE AMPLITUDE VOLTAGE
vs
OSCILLATOR FREQUENCY
1.8
VCC = 6 V
TA = 25 °C
1.5
Voscmax (100% duty cycle)
1.2
0.9
Voscmin (zero duty cycle)
0.6
0.3
0
10 k
100 k
1M
fosc – Oscillator Frequency – Hz
Figure 11
10 M
0
– 50 – 25
0
25
50
75
100
TA – Ambient Temperature – °C
Figure 10
ERROR AMPLIFIER OUTPUT VOLTAGE
vs
OUTPUT (SINK) CURRENT
3
VCC = 6 V
VI(FB) = 1.2 V
2.5 ^TA = 25 °C
2
1.5
1
0.5
0
0
0.2
0.4
0.6
IO – Output (Sink) Current – mA
Figure 12
14
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