TL594 Datasheet, PDF (3/12 Pages) Texas Instruments – PULSE-WIDTH-MODULATION CONTROL CIRCUIT

TL594
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
PWM COMPARATOR SECTION (Test Circuit Figure 11)
Input Threshold Voltage (Zero Duty Cycle)
Input Sink Current (VPin 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)
VTH
–
II–
0.3
IIB _(DT)
–
DCmax
45
–
VTH
–
0
3.6
0.7
–2.0
48
45
2.8
–
4.5
V
–
mA
–10
µA
%
50
–
V
3.3
–
OSCILLATOR SECTION
Frequency
(CT = 0.001 µF, RT = 30 kΩ)
(CT = 0.01 µF, RT = 12 kΩ, TA = 25°C)
(CT = 0.01 µF, RT = 12 kΩ, TA = Tlow to Thigh)
Standard Deviation of Frequency* (CT = 0.001 µF, RT = 30 kΩ)
Frequency Change with Voltage (VCC = 7.0 V to 40 V, TA = 25°C)
Frequency Change with Temperature
(∆TA = Tlow to Thigh, CT = 0.01 µF, RT = 12 kΩ)
fosc
–
9.2
9.0
σfosc
–
∆fosc (∆V)
–
∆fosc (∆T)
–
kHz
40
–
10
10.8
–
12
1.5
–
%
0.2
1.0
%
4.0
–
%
UNDERVOLTAGE LOCKOUT SECTION
Turn–On Threshold (VCC Increasing, Iref = 1.0 mA)
TA = 25°C
TA = Tlow to Thigh
Hysteresis
TL594C,I
TL594M
Vth
V
4.0
5.2
6.0
3.5
–
6.5
VH
mV
100
150
300
50
150
300
TOTAL DEVICE
Standby Supply Current (Pin 6 at Vref, All other inputs and outputs open)
ICC
mA
(VCC = 15 V)
–
8.0
15
(VCC = 40 V)
–
8.0
18
Average Supply Current (VPin ₄ = 2.0 V, CT = 0.01 µF, RT = 12 kΩ,
VCC = 15 V, See Figure 11)
mA
–
11
–
* 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