TL594
ELECTRICAL CHARACTERISTICS (V = 15 V, C = 0.01 mF, R = 12 kW, unless otherwise noted.)
CC
T
T
For typical values T = 25°C, for min/max values T is the operating ambient temperature range that applies, unless otherwise noted.
A
A
Characteristics
Symbol
Min
Typ
Max
Unit
PWM COMPARATOR SECTION (Test Circuit Figure 11)
Input Threshold Voltage (Zero Duty Cycle)
V
I
−
3.6
0.7
4.5
−
V
TH
I−
Input Sink Current (V
= 0.7 V)
0.3
mA
Pin 3
DEADTIME CONTROL SECTION (Test Circuit Figure 11)
Input Bias Current (Pin 4) (V = 0 V to 5.25 V)
I
−
−2.0
−10
mA
Pin 4
IB (DT)
Maximum Duty Cycle, Each Output, Push−Pull Mode
DC
%
max
45
−
48
45
50
−
(V
(V
= 0 V, C = 0.01 mF, R = 12 kW)
T T
Pin 4
Pin 4
= 0 V, C = 0.001 mF, R = 30 kW)
T
T
Input Threshold Voltage (Pin 4)
(Zero Duty Cycle)
(Maximum Duty Cycle)
V
V
TH
−
0
2.8
−
3.3
−
OSCILLATOR SECTION
Frequency
f
kHz
osc
−
9.2
9.0
40
10
−
−
10.8
12
(C = 0.001 mF, R = 30 kW)
T
T
(C = 0.01 mF, R = 12 kW, T = 25°C)
T
T
A
(C = 0.01 mF, R = 12 kW, T = T
to T
)
high
T
T
A
low
Standard Deviation of Frequency* (C = 0.001 mF, R = 30 kW)
σf
osc
−
−
−
1.5
0.2
4.0
−
1.0
−
%
%
%
T
T
Frequency Change with Voltage (V = 7.0 V to 40 V, T = 25°C)
Df
Df
(DV)
(DT)
CC
A
osc
Frequency Change with Temperature
osc
(DT = T
to T
, C = 0.01 mF, R = 12 kW)
high T T
A
low
UNDERVOLTAGE LOCKOUT SECTION
Turn−On Threshold (V Increasing, I = 1.0 mA)
V
V
CC
ref
th
T = 25°C
4.0
3.5
5.2
−
6.0
6.5
A
T = T
to T
A
low
high
Hysteresis
TL594C,I
TL594M
V
mV
H
100
50
150
150
300
300
TOTAL DEVICE
Standby Supply Current (Pin 6 at V , All other inputs and outputs open)
I
mA
mA
ref
CC
−
−
8.0
8.0
15
18
(V = 15 V)
CC
(V = 40 V)
CC
Average Supply Current (V
= 2.0 V, C = 0.01 mF, R = 12 kW,
T T
Pin 4
−
11
−
V
= 15 V, See Figure 11)
CC
N
2
Σ (X − X)
n
*Standard deviation is a measure of the statistical distribution about the mean as derived from the formula, σ
n = 1
N − 1
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