TL494 Datasheet, PDF (3/12 Pages) Motorola, Inc – SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT

TL494
ELECTRICAL CHARACTERISTICS (VCC = 15 V, CT = 0.01 µF, RT = 12 kΩ, 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)
Input Offset Current (VO _{(Pin 3)} = 2.5 V)
Input Bias Current (VO _{(Pin 3)} = 2.5 V)
Input Common Mode Voltage Range (VCC = 40 V, TA = 25°C)
Open Loop Voltage Gain (∆VO = 3.0 V, VO = 0.5 V to 3.5 V, RL = 2.0 kΩ)
Unity–Gain Crossover Frequency (VO = 0.5 V to 3.5 V, RL = 2.0 kΩ)
Phase Margin at Unity–Gain (VO = 0.5 V to 3.5 V, RL = 2.0 kΩ)
Common Mode Rejection Ratio (VCC = 40 V)
Power Supply Rejection Ratio (∆VCC = 33 V, VO = 2.5 V, RL = 2.0 kΩ)
Output Sink Current (VO _{(Pin 3)} = 0.7 V)
Output Source Current (VO _{(Pin 3)} = 3.5 V)
PWM COMPARATOR SECTION (Test Circuit Figure 11)
Input Threshold Voltage (Zero Duty Cycle)
Input Sink Current (V(Pin ₃₎ = 0.7 V)
DEADTIME CONTROL SECTION (Test Circuit Figure 11)
Input Bias Current (Pin 4) (VPin ₄ = 0 V to 5.25 V)
Maximum Duty Cycle, Each Output, Push–Pull Mode
(VPin ₄ = 0 V, CT = 0.01 µF, RT = 12 kΩ)
(VPin ₄ = 0 V, CT = 0.001 µF, RT = 30 kΩ)
Input Threshold Voltage (Pin 4)
(Zero Duty Cycle)
(Maximum Duty Cycle)
VIO
IIO
IIB
VICR
AVOL
fC–
φ_m
CMRR
PSRR
IO–
IO+
VTH
II–
IIB _(DT)
DCmax
Vth
–
2.0
10
mV
–
5.0
250
nA
–
–0.1
–1.0
µA
–0.3 to VCC–2.0
V
70
95
–
dB
–
350
–
kHz
–
65
–
deg.
65
90
–
dB
–
100
–
dB
0.3
0.7
–
mA
2.0
–4.0
–
mA
–
2.5
4.5
V
0.3
0.7
–
mA
–
–2.0
–10
µA
%
45
48
50
–
45
50
V
–
2.8
3.3
0
–
–
OSCILLATOR SECTION
Frequency (CT = 0.001 µF, RT = 30 kΩ)
fosc
–
40
–
kHz
Standard Deviation of Frequency* (CT = 0.001 µF, RT = 30 kΩ)
σfosc
–
3.0
–
%
Frequency Change with Voltage (VCC = 7.0 V to 40 V, TA = 25°C)
∆fosc (∆V)
–
0.1
–
%
Frequency Change with Temperature (∆TA = Tlow to Thigh)
(CT = 0.01 µF, RT = 12 kΩ)
∆fosc (∆T)
–
–
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)
ICC
mA
(VCC = 15 V)
–
5.5
10
(VCC = 40 V)
–
7.0
15
Average Supply Current
(CT = 0.01 µF, RT = 12 kΩ, V(Pin ₄₎ = 2.0 V)
(VCC = 15 V) (See Figure 12)
mA
–
7.0
–
* Standard deviation is a measure of the statistical distribution about the mean as derived from the formula, σ
N
Σ
(Xn
–
X)2
n=1
N–1
MOTOROLA ANALOG IC DEVICE DATA
3