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| TL494_13 Datasheet, PDF (4/8 Pages) Unisonic Technologies – VOLTAGE MODE PWM CONTROL CIRCUIT | |||
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TL494
LINEAR INTEGRATED CIRCUIT
ï® ABSOLUTE MAXIMUM RATINGS (unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage(Note 3)
Amplifier Input Voltage
VCC
41
V
VIN
VCC+0.3
V
Collector Output Voltage
Collector Output Current
Power Dissipation (TA=25ï°C)
Derate at TAï¼25ï°C
VOUT
ICO
PD
41
250
1000
9.2
V
mA
mW
mW/ï°C
Junction Temperature
TJ
125
ï°C
Operating Temperature
Storage Temperature
TOPR
TSTG
-25 ~ +85
ï°C
-40 ~ +150
ï°C
Note 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. All voltage values, except differential voltages are with respect to the network ground terminal.
ï® RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
Amplifier Input Voltage
Collector Output Voltage
Collector Output Current (each Transistor)
Current into Feedback
Timing Capacitor
Timing Resistor
Oscillator Frequency
Operating Free-Air Temperature
SYMBOL
VCC
VIN
VOUT
IC
If
CT
RT
fOSC
TA
MIN
7
-0.3
0.47
1.8
1
0
ï® ELECTRICAL CHARACTERISTICS
TYP
MAX
UNIT
40
V
VCC-2
V
40
V
200
mA
0.3
mA
10000
nF
500
kâ¦
300
kHz
70
ï°C
(Over recommended operating free-air temperature range, VCC=15V, f=1kHz, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
REFERENCE SECTION
Output Voltage
Input Regulation
Output Regulation
Output Voltage Change with Temperature
Short-Circuit Output Current
VOUT
VIN
VOUT
IO(SC)
IOUT=1mA
VCC=7V ~ 40V
IOUT=1 ~ 10mA
ïTA=MIN ~ MAX(note 2)
VREF=0
4.75 5 5.25 V
2 25 mV
1 15 mV
0.2 1 %
35
mA
OSCILLATOR SECTION
Frequency
Standard Deviation of Frequency
Frequency Change with Voltage
Frequency Change with Temperature
F
CT=0.01μF, RT=12kâ¦
All Values of VCC CT, RT, TA
constant
VCC=7V ~ 40V,Ta=25ï°C
CT=0.01μF, RT=12kâ¦,
ïTA=MIN ~ MAX
10
kHz
10
%
0.1
%
12 %
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 8
QW-R103-004. I
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