TL2843B-Q1 Datasheet, PDF (7/16 Pages) Texas Instruments – HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLER

TL2843B-Q1
www.ti.com
SLVSAE2A – JULY 2010 – REVISED FEBRUARY 2012
TYPICAL CHARACTERISTICS
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
ERROR AMPLIFIER OPEN-LOOP
GAIN AND PHASE
vs
FREQUENCY
25
100
200
20
15
10
5
0
0 5 10 15 20 25 30 35 40
V_CC – Supply Voltage – V
80
150
60
Phase ¹⁰⁰
40
50
20
V_CC = 15 V
0 _{RL = 100 kXΩ}
T_A = 25°C
Gain
-20
10 ^{1 . E +0 1}
100 1k 10k 100k ^{1 . E +0 2 1 . E +0 3}
1 . E +0 4 1 . E +0 5
f – Frequency – Hz
1M ^{1 . E +0 6}
0
-50
-100
10M ^{1 . E +0 7}
CURRENT-SENSE INPUT THRESHOLD
vs
ERROR AMPLIFIER OUTPUT VOLTAGE
1.2
V_IN = 15 V
1
0.8
T_A = 125°C
0.6
T_A = 25°C
0.4
0.2
T_A = -55°C
0
012345678
V_O – Error Amplifier Output Voltage – V
OSCILLATOR DISCHARGE CURRENT
vs
TEMPERATURE
9.2
V_IN = 15 V
9
V_OSC = 2 V
8.8
8.6
8.4
8.2
8
7.8
7.6
7.4
-55 -35 -15 5 25 45 65 85 105 125 145
T_A – Temperature – °C
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