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

TL594
ELECTRICAL CHARACTERISTICS (V_CC = 15 V, C_T = 0.01 mF, R_T = 12 kW, unless otherwise noted.)
For typical values T_A = 25°C, for min/max values T_A 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 (V_{Pin 3} = 0.7 V)
DEADTIME CONTROL SECTION (Test Circuit Figure 11)
Input Bias Current (Pin 4) (V_{Pin 4} = 0 V to 5.25 V)
Maximum Duty Cycle, Each Output, Push−Pull Mode
(V_{Pin 4} = 0 V, C_T = 0.01 mF, R_T = 12 kW)
(V_{Pin 4} = 0 V, C_T = 0.001 mF, R_T = 30 kW)
Input Threshold Voltage (Pin 4)
(Zero Duty Cycle)
(Maximum Duty Cycle)
V_TH
I_I−
I_{IB (DT)}
DC_max
V_TH
−
3.6
4.5
V
0.3
0.7
−
mA
−
−2.0
−10
mA
%
45
48
50
−
45
−
V
−
2.8
3.3
0
−
−
OSCILLATOR SECTION
Frequency
(C_T = 0.001 mF, R_T = 30 kW)
(C_T = 0.01 mF, R_T = 12 kW, T_A = 25°C)
(C_T = 0.01 mF, R_T = 12 kW, T_A = T_low to T_high)
Standard Deviation of Frequency* (C_T = 0.001 mF, R_T = 30 kW)
Frequency Change with Voltage (V_CC = 7.0 V to 40 V, T_A = 25°C)
Frequency Change with Temperature
(DT_A = T_low to T_high, C_T = 0.01 mF, R_T = 12 kW)
UNDERVOLTAGE LOCKOUT SECTION
Turn−On Threshold (V_CC Increasing, I_ref = 1.0 mA)
T_A = 25°C
T_A = T_low to T_high
Hysteresis
TL594C,I
TL594M
f_osc
−
9.2
9.0
σf_osc
−
Df_osc (DV)
−
Df_osc (DT)
−
kHz
40
−
10
10.8
−
12
1.5
−
%
0.2
1.0
%
4.0
−
%
V_th
V
4.0
5.2
6.0
3.5
−
6.5
V_H
mV
100
150
300
50
150
300
TOTAL DEVICE
Standby Supply Current (Pin 6 at V_ref, All other inputs and outputs open)
I_CC
(V_CC = 15 V)
(V_CC = 40 V)
Average Supply Current (V_{Pin 4} = 2.0 V, C_T = 0.01 mF, R_T = 12 kW,
V_CC = 15 V, See Figure 11)
mA
−
8.0
15
−
8.0
18
mA
−
11
−
*Standard deviation is a measure of the statistical distribution about the mean as derived from the formula, σ
N
Σ (X_n − X)²
n=1
N−1
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