TL594 Datasheet, PDF (2/12 Pages) Texas Instruments – PULSE-WIDTH-MODULATION CONTROL CIRCUIT

TL594
RECOMMENDED OPERATING CONDITIONS
Characteristics
Power Supply Voltage
Collector Output Voltage
Collector Output Current (Each transistor)
Amplified Input Voltage
Current Into Feedback Terminal
Reference Output Current
Timing Resistor
Timing Capacitor
Oscillator Frequency
PWM Input Voltage (Pins 3, 4, 13)
Symbol
V_CC
V_C1, V_C2
I_C1, I_C2
V_in
l_fb
l_ref
R_T
C_T
f_osc
−
Min
7.0
−
−
0.3
−
−
1.8
0.0047
1.0
0.3
Typ
Max
Unit
15
40
V
30
40
V
−
200
mA
−
V_CC − 2.0
V
−
0.3
mA
−
10
mA
30
500
kW
0.001
10
mF
40
300
kHz
−
5.3
V
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
REFERENCE SECTION
Reference Voltage
(I_O = 1.0 mA, T_A = 25°C)
(I_O = 1.0 mA)
Line Regulation (V_CC = 7.0 V to 40 V)
Load Regulation (I_O = 1.0 mA to 10 mA)
Short Circuit Output Current (V_ref = 0 V)
OUTPUT SECTION
Collector Off−State Current (V_CC = 40 V, V_CE = 40 V)
Emitter Off−State Current (V_CC = 40 V, V_C = 40 V, V_E = 0 V)
Collector−Emitter Saturation Voltage (Note 1)
Common−Emitter (V_E = 0 V, I_C = 200 mA)
Emitter−Follower (V_C = 15 V, I_E = −200 mA)
Output Control Pin Current
Low State (V_OC ≤ 0.4 V)
High State (V_OC = V_ref)
Output Voltage Rise Time
Common−Emitter (See Figure 13)
Emitter−Follower (See Figure 14)
Output Voltage Fall Time
Common−Emitter (See Figure 13)
Emitter−Follower (See Figure 14)
V_ref
V
4.925
5.0
5.075
4.9
−
5.1
Reg_line
−
2.0
25
mV
Reg_load
−
2.0
15
mV
I_SC
15
40
75
mA
I_C(off)
−
2.0
100
mA
I_E(off)
−
−
−100
mA
V_SAT(C)
−
V_SAT(E)
−
V
1.1
1.3
1.5
2.5
I_OCL
I_OCH
mA
−
0.1
−
−
2.0
20
t_r
ns
−
100
200
−
100
200
t_f
ns
−
40
100
−
40
100
ERROR AMPLIFIER SECTION
Input Offset Voltage (V_{O (Pin 3)} = 2.5 V)
V_IO
−
2.0
10
mV
Input Offset Current (V_{O (Pin 3)} = 2.5 V)
I_IO
−
5.0
250
nA
Input Bias Current (V_{O (Pin 3)} = 2.5 V)
I_IB
−
−0.1
−1.0
mA
Input Common Mode Voltage Range (V_CC = 40 V, T_A = 25°C)
V_ICR
0 to V_CC−2.0
V
Inverting Input Voltage Range
V_IR(INV)
−0.3 to V_CC−2.0
V
Open Loop Voltage Gain (DV_O = 3.0 V, V_O = 0.5 V to 3.5 V, R_L = 2.0 kW)
A_VOL
70
95
−
dB
Unity−Gain Crossover Frequency (V_O = 0.5 V to 3.5 V, R_L = 2.0 kW)
f_C
−
700
−
kHz
Phase Margin at Unity−Gain (V_O = 0.5 V to 3.5 V, R_L = 2.0 kW)
φm
−
65
−
deg.
Common Mode Rejection Ratio (V_CC = 40 V)
CMRR
65
90
−
dB
Power Supply Rejection Ratio (DV_CC = 33 V, V_O = 2.5 V, R_L = 2.0 kW)
PSRR
−
100
−
dB
Output Sink Current (V_{O (Pin 3)} = 0.7 V)
I_O−
0.3
0.7
−
mA
Output Source Current (V_{O (Pin 3)} = 3.5 V)
I_O+
−2.0
−4.0
−
mA
1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
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2