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ELECTRICAL CHARACTERISTICS
TL594
PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS052G – APRIL 1988 – REVISED JANUARY 2007
V
CC
= 15 V, over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS
(1)
MIN TYP
(2)
MAX UNIT
Reference Section
Output voltage (REF) I
O
= 1 mA, T
A
= 25 ° C 4.95 5 5.05 V
Input regulation V
CC
= 7 V to 40 V, T
A
= 25 ° C 2 25 mV
Output regulation I
O
= 1 mA to 10 mA, T
A
= 25 ° C 14 35 mV
Output-voltage change with temperature ∆ T
A
= MIN to MAX 2 10 mV/V
Short-circuit output current
(3)
V
ref
= 0 10 35 50 mA
Amplifier Section (see Figure 1 )
Input offset voltage, error amplifier FEEDBACK = 2.5 V 2 10 mV
Input offset current FEEDBACK = 2.5 V 25 250 nA
Input bias current FEEDBACK = 2.5 V 0.2 1 µ A
Common-mode input voltage range, 0.3 to
V
CC
= 7 V to 40 V V
error amplifier V
CC
– 2
Open-loop voltage amplification,
∆ V
O
= 3 V, R
L
= 2 k Ω , V
O
= 0.5 V to 3.5 V 70 95 dB
error amplifier
Unity-gain bandwidth V
O
= 0.5 V to 3.5 V, R
L
= 2 k Ω 800 kHz
Common-mode rejection ratio,
V
CC
= 40 V, T
A
= 25°C 65 80 dB
error amplifier
Output sink current, FEEDBACK V
ID
= –15 mV to –5 V, FEEDBACK = 0.5 V 0.3 0.7 mA
Output source current, FEEDBACK V
ID
= 15 mV to 5 V, FEEDBACK = 3.5 V –2 mA
Oscillator Section, C
T
= 0.01 µ F, R
T
= 12 k Ω (see Figure 2 )
Frequency 10 kHz
Standard deviation of frequency
(4)
All values of V
CC
, C
T
, R
T
, and T
A
constant 100 Hz/kHz
Frequency change with voltage V
CC
= 7 V to 40 V, T
A
= 25 ° C 1 Hz/kHz
Frequency change with temperature
(5)
∆ T
A
= MIN to MAX 50 Hz/kHz
Dead-Time Control Section (see Figure 2 )
Input bias current V
I
= 0 to 5.25 V –2 –10 µ A
Maximum duty cycle, each output DTC = 0 V 0.45
Zero duty cycle 3 3.3
Input threshold voltage V
Maximum duty cycle 0
Output Section
V
C
= 40 V, V
E
= 0 V, V
CC
= 40 V 2 100
Collector off-state current µ A
DTC and OUTPUT CTRL = 0 V, V
C
= 15 V,
4 200
V
E
= 0 V, V
CC
= 1 V to 3 V
Emitter off-state current V
CC
= V
C
= 40 V, V
E
= 0 –100 µ A
Common emitter, V
E
= 0, I
C
= 200 mA 1.1 1.3
Collector-emitter saturation voltage V
Emitter follower, V
C
= 15 V, I
E
= –200 mA 1.5 2.5
Output control input current V
I
= V
ref
3.5 mA
(1) For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
(2) All typical values, except for parameter changes with temperature, are at T
A
= 25 ° C.
(3) Duration of the short circuit should not exceed one second.
(4) Standard deviation is a measure of the statistical distribution about the mean, as derived from the formula:
(5) Temperature coefficient of timing capacitor and timing resistor is not taken into account.
4
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