TL494_101 Datasheet, PDF (6/19 Pages) Texas Instruments – PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL494
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS074E – JANUARY 1983 – REVISED FEBRUARY 2005
PARAMETER MEASUREMENT INFORMATION
V_CC = 15 V
Test
Inputs
50 kΩ
4
3
12 kΩ ₆
5
DTC
12
V_CC
FEEDBACK
RT
CT
8
C1
E1 ⁹
11
C2
E2 ¹⁰
0.01 µF
1
1IN+
2
1IN−
16 _2IN+
15 _2IN−
Error
Amplifiers
13 _OUTPUT
CTRL
GND
REF ¹⁴
7
150 Ω
2W
150 Ω
2W
Output 1
Output 2
TEST CIRCUIT
Voltage
at C1
Voltage
at C2
Voltage
at CT
DTC
Threshold Voltage
0V
FEEDBACK
0.7 V
Duty Cycle
Threshold Voltage
0%
MAX
0%
VOLTAGE WAVEFORMS
Figure 1. Operational Test Circuit and Waveforms
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V_CC
0V
V_CC
0V
6