TL5001, TL5001A
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS084F – APRIL 1994 – REVISED JANUARY 2002
TYPICAL CHARACTERISTICS
AVERAGE SUPPLY CURRENT
vs
POWER-SUPPLY VOLTAGE
AVERAGE SUPPLY CURRENT
vs
AMBIENT TEMPERATURE
2
1.5
1
1.3
1.2
1.1
1
R = 100 kΩ
t
V
= 6 V
CC
t
T
= 25 °C
A
R = 100 kΩ
DT Resistance = 100 kΩ
0.9
0.8
0
0.5
0
0
10
20
30
40
– 50
– 25
0
25
50
75
100
V
CC
– Power-Supply Voltage – V
T
A
– Ambient Temperature – °C
Figure 9
Figure 10
ERROR AMPLIFIER OUTPUT VOLTAGE
PWM TRIANGLE WAVE AMPLITUDE VOLTAGE
vs
vs
OUTPUT (SINK) CURRENT
OSCILLATOR FREQUENCY
3
2.5
2
1.8
1.5
1.2
V
V
= 6 V
= 1.2 V
CC
I(FB)
V
T
A
= 6 V
= 25 °C
CC
T
A = 25 °C
V max (100% duty cycle)
osc
1.5
1
0.9
0.6
V min (zero duty cycle)
osc
0.5
0
0.3
0
0
0.2
0.4
0.6
10 k
100 k
1 M
10 M
f
– Oscillator Frequency – Hz
I
O
– Output (Sink) Current – mA
osc
Figure 11
Figure 12
14
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TI [ TEXAS INSTRUMENTS ]
