TL494_12 Datasheet, PDF (3/7 Pages) Unisonic Technologies – VOLTAGE MODE PWM CONTROL CIRCUIT

TL494
LINEAR INTEGRATED CIRCUIT
„ ABSOLUTE MAXIMUM RATINGS (unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage(Note 3)
V_CC
41
V
Amplifier Input Voltage
V_IN
V_CC+0.3
V
Collector Output Voltage
V_OUT
41
V
Collector Output Current
I_CO
Power Dissipation (T_A=25°C)
Derate at T_A＞25°C
P_D
250
1000
9.2
mA
mW
mW/°C
Junction Temperature
Operating Temperature
Storage Temperature
T_J
T_OPR
T_STG
125
°C
-25 ~ +85
°C
-40 ~ +150
°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.
„ RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
MIN
Supply Voltage
V_CC
7
Amplifier Input Voltage
V_IN
-0.3
Collector Output Voltage
V_OUT
Collector Output Current (each Transistor)
I_C
Current into Feedback
I_f
Timing Capacitor
C_T
0.47
Timing Resistor
R_T
1.8
Oscillator Frequency
f_OSC
1
Operating Free-Air Temperature
T_A
0
„ ELECTRICAL CHARACTERISTICS
TYP
MAX
UNIT
40
V
Vcc-2
V
40
V
200
mA
0.3
mA
10000
nF
500
kΩ
300
kHz
70
°C
(Over recommended operating free-air temperature range, V_CC=15V, f=1kHz, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
REFERENCE SECTION
Output Voltage
V_OUT I_OUT=1mA
4.75 5 5.25 V
Input Regulation
V_IN V_CC=7V ~ 40V
2 25 mV
Output Regulation
Output Voltage Change with Temperature
V_OUT I_OUT=1 ~ 10mA
ΔTa=MIN ~ MAX(note 2)
1 15 mV
0.2 1 %
Short-Circuit Output Current
I_O(SC) V_REF=0
35
mA
OSCILLATOR SECTION
Frequency
F C_T=0.01μF, R_T=12kΩ
10
kHz
Standard Deviation of Frequency
All Values of V_CC C_T, R_T, T_A
constant
10
%
Frequency Change with Voltage
Frequency Change with Temperature
V_CC=7V ~ 40V,Ta=25°C
C_T=0.01μF, R_T=12kΩ,
ΔTa=MIN ~ MAX
0.1
%
12 %
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 7
QW-R103-004,G