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TL494BDG Datasheet(PDF) 3 Page - ON Semiconductor

Part # TL494BDG
Description  SWITCHMODE TM Pulse Width Modulation Control Circuit
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

TL494BDG Datasheet(HTML) 3 Page - ON Semiconductor

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TL494, NCV494
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (VCC = 15 V, CT = 0.01 mF, RT = 12 kW, unless otherwise noted.)
For typical values TA = 25°C, for min/max values TA is the operating ambient temperature range that applies, unless otherwise noted.
Characteristics
Symbol
Min
Typ
Max
Unit
ERROR AMPLIFIER SECTION
Input Offset Voltage (VO (Pin 3) = 2.5 V)
VIO
2.0
10
mV
Input Offset Current (VO (Pin 3) = 2.5 V)
IIO
5.0
250
nA
Input Bias Current (VO (Pin 3) = 2.5 V)
IIB
−0.1
−1.0
mA
Input Common Mode Voltage Range (VCC = 40 V, TA = 25°C)
VICR
−0.3 to VCC−2.0
V
Open Loop Voltage Gain (
DVO = 3.0 V, VO = 0.5 V to 3.5 V, RL = 2.0 kW)
AVOL
70
95
dB
Unity−Gain Crossover Frequency (VO = 0.5 V to 3.5 V, RL = 2.0 kW)
fC−
350
kHz
Phase Margin at Unity−Gain (VO = 0.5 V to 3.5 V, RL = 2.0 kW)
fm
65
deg.
Common Mode Rejection Ratio (VCC = 40 V)
CMRR
65
90
dB
Power Supply Rejection Ratio (
DVCC = 33 V, VO = 2.5 V, RL = 2.0 kW)
PSRR
100
dB
Output Sink Current (VO (Pin 3) = 0.7 V)
IO−
0.3
0.7
mA
Output Source Current (VO (Pin 3) = 3.5 V)
IO+
2.0
−4.0
mA
PWM COMPARATOR SECTION (Test Circuit Figure 11)
Input Threshold Voltage (Zero Duty Cycle)
VTH
2.5
4.5
V
Input Sink Current (V(Pin 3) = 0.7 V)
II−
0.3
0.7
mA
DEADTIME CONTROL SECTION (Test Circuit Figure 11)
Input Bias Current (Pin 4) (VPin 4 = 0 V to 5.25 V)
IIB (DT)
−2.0
−10
mA
Maximum Duty Cycle, Each Output, Push−Pull Mode
(VPin 4 = 0 V, CT = 0.01 mF, RT = 12 kW)
(VPin 4 = 0 V, CT = 0.001 mF, RT = 30 kW)
DCmax
45
48
45
50
50
%
Input Threshold Voltage (Pin 4)
(Zero Duty Cycle)
(Maximum Duty Cycle)
Vth
0
2.8
3.3
V
OSCILLATOR SECTION
Frequency (CT = 0.001 mF, RT = 30 kW)
fosc
40
kHz
Standard Deviation of Frequency* (CT = 0.001 mF, RT = 30 kW)
sfosc
3.0
%
Frequency Change with Voltage (VCC = 7.0 V to 40 V, TA = 25°C)
Dfosc (DV)
0.1
%
Frequency Change with Temperature (
DTA = Tlow to Thigh)
(CT = 0.01 mF, RT = 12 kW)
Dfosc (DT)
12
%
UNDERVOLTAGE LOCKOUT SECTION
Turn−On Threshold (VCC increasing, Iref = 1.0 mA)
Vth
5.5
6.43
7.0
V
TOTAL DEVICE
Standby Supply Current (Pin 6 at Vref, All other inputs and outputs open)
(VCC = 15 V)
(VCC = 40 V)
ICC
5.5
7.0
10
15
mA
Average Supply Current
(CT = 0.01 mF, RT = 12 kW, V(Pin 4) = 2.0 V)
(VCC = 15 V) (See Figure 12)
7.0
mA
* Standard deviation is a measure of the statistical distribution about the mean as derived from the formula,
s
N
n = 1
S (Xn − X)2
N − 1


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