TL494_09 Datasheet, PDF (4/7 Pages) Unisonic Technologies – VOLTAGE MODE PWM CONTROL CIRCUIT

TL494
LINEAR INTEGRATED CIRCUIT
„ ELECTRICAL CHARACTERISTICS
(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
Input Regulation
Output Regulation
Output Voltage Change with Temperature
V_OUT
V_IN
V_OUT
I_OUT=1mA
V_CC=7V ~ 40V
I_OUT=1 ~ 10mA
ΔTa=MIN ~ MAX(note 2)
4.75 5 5.25 V
2 25 mV
1 15 mV
0.2 1 %
Short-Circuit Output Current
Oscillator Section
I_O(SC) V_REF=0
35
mA
Frequency
Standard Deviation of Frequency
F C_T=0.01μF, R_T=12kΩ
10
kHz
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 %
Amplifier Section
Input Offset Voltage
Input Offset Current
Input Bias Current
Error
Common-Mode Input Voltage Range Error
V_I(OFF)
I_I(OFF)
I_I(BIAS)
V_OUT (pin 3)=2.5V
V_OUT (pin 3)=2.5V
V_OUT (pin 3)=2.5V
V_CC=7V ~ 40 V
2
25
0.2
-0.3 ~
Vcc-2
10 mV
250 nA
1 μA
V
Open-Loop Voltage Amplification
ΔV_OUT=3V, V_OUT=0.5V ~ 3.5V
70 95
dB
Unity-Gain Bandwidth
GB_W
800
kHz
Common-Mode Rejection Ratio
Error CMRR V_CC=40V,T_A=25°C
65 80
dB
Output Sink Current(pin 3)
I_O(SINK)
V_ID=-15mV ~ -5V
V(pin 3)=0.5V
0.3 0.7
mA
Output source Current(pin 3)
I_O(SOURCE) V_ID=15mV ~ -5V, V(pin 3)=3.5V -2
mA
Output Section
Collector off-state current
Emitter off-state Current
Collector -emitter
Common-emitter
Saturation Voltage
Emitter-Follower
Output Control Input Current
Dead Time Control Section
I_C(OFF)
I_E(OFF)
V_CE=40V, V_CC=40V
V_CC=V_C=40V, V_E=0
V_E=0, I_C=200mA
V_C=15V, I_E=-200mA
V_IN=V_REF
2 100 μA
-100 μA
1.1 1.3 V
1.5 2.5
3.5 mA
Input bias (pin 4)
Maximum duty cycle, each output
Input threshold Voltage(pin 4)
I_I(BIAS)
V_THR
V_IN=0 ~ 5.25V
V_IN(pin 40)=0
Zero duty Cycle
Maximum duty cycle
-2 -10 μA
45
%
3 3.3 V
0
PWM comparator Section
Input Threshold Voltage(pin 3)
Input Sink Current (pin 3)
Total Device
V_THR Zero Duty cycle
I_I(SINK) V(pin 3)= 0.7V
4 4.5 V
0.3 0.7
mA
Standby Supply Current
Average supply current
V_CC =15V
V_CC =40V
I_ST-BY
pin 6 at V_REF, all other Inputs and
outputs open
V(pin 4)=2V
6 10 mA
9 15
7.5
mA
Switching Characteristics, Ta=25°C
Output Voltage Rise Time
Output Voltage Fall Time
Output Voltage Rise Time
Output Voltage Fall Time
t_{R Common-emitter configuration}
t_F
t_{R Emitter-follower configuration}
t_F
100 200 ns
25 100 ns
100 200 ns
40 100 ns
Note 1:All typical Values except for temperature coefficient are at Ta=25°C.
Note 2:For conditions shown as MIN or MAX, use appropriate value under recommended operating conditions.
Note 3:Duration of the short-circuit should not exceed one second.
Note 4:Standard deviation is a measure of the statistical distribution the mean as derived from the formula:
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R103-004,F