Datasheet

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TYPICAL CHARACTERISTICS
-20
0
20
40
60
80
100
1 . E +0 1 1 . E +0 2 1 . E +0 3 1 . E +0 4 1 . E +0 5 1 . E +0 6 1 . E +0 7
f – Frequency – Hz
A
VOL
– Open-Loop Voltage Gain – dB
-100
-50
0
50
100
150
200
Phase Margin – deg
V
CC
= 15 V
R
L
= 100 kX
T
A
= 25°C
Phase
Gain
kΩ
10 100
1k
10k 100k
1M 10M
0
5
10
15
20
25
0 5 10 15 20 25 30 35 40
V
CC
– Supply Voltage – V
I
CC
– Supply Current – mA
TL2845
TL2842
0
0.2
0.4
0.6
0.8
1
1.2
0 1 2 3 4 5 6 7 8
V
O
– Error Amplifier Output Voltage – V
V
th
– Current-Sense Input Threshold – V
V
IN
= 15 V
T
A
= 125°C
T
A
= 25°C
T
A
= -55°C
7.4
7.6
7.8
8
8.2
8.4
8.6
8.8
9
9.2
-55 -35 -15 5 25 45 65 85 105 125 145
T
A
– Temperature – °C
I
disharge
– Oscillator Discharge Current – mA
V
IN
= 15 V
V
OSC
= 2 V
TL284xB , TL384xB
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
ERROR AMPLIFIER OPEN-LOOP
SUPPLY CURRENT GAIN AND PHASE
vs vs
SUPPLY VOLTAGE FREQUENCY
CURRENT-SENSE INPUT THRESHOLD OSCILLATOR DISCHARGE CURRENT
vs vs
ERROR AMPLIFIER OUTPUT VOLTAGE TEMPERATURE
8
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