TL594
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS052C – APRIL 1988 – REVISED JULY 1999
electrical characteristics over recommended operating conditions, V
(unless otherwise noted)
= 15 V,
CC
reference section
TL594C, TL594I
†
PARAMETER
UNIT
TEST CONDITIONS
‡
MIN TYP
MAX
5.05
25
Output voltage (REF)
Input regulation
I
= 1 mA,
T
= 25°C
4.95
5
2
V
O
A
V
= 7 V to 40 V,
CC
= 1 to 10 mA,
T
= 25°C
= 25°C
A
mV
mV
A
Output regulation
I
O
T
14
2
35
Output-voltage change with temperature
∆T = MIN to MAX
10 mV/V
A
§
Short-circuit output current
V
ref
= 0
10
35
50
mA
†
‡
§
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
All typical values except for parameter changes with temperature are at T = 25°C.
A
Duration of the short circuit should not exceed one second.
amplifier section (see Figure 1)
TL594C, TL594I
PARAMETER
TEST CONDITIONS
UNIT
‡
MIN TYP
MAX
10
Input offset voltage, error amplifier
Input offset current
FEEDBACK = 2.5 V
FEEDBACK = 2.5 V
FEEDBACK = 2.5 V
2
mV
nA
µA
25
250
1
Input bias current
0.2
0.3
to
Common-mode input voltage range,
error amplifier
V
CC
= 7 V to 40 V
V
V
–2
CC
Open-loop voltage amplification, error
amplifier
∆V = 3 V,
R
R
= 2 kΩ,
= 2 kΩ
= 25°C
V = 0.5 V to 3.5 V
O
70
95
800
80
dB
kHz
dB
O
L
L
Unity-gain bandwidth
V
V
= 0.5 V to 3.5 V,
O
Common-mode rejection ratio, error
amplifier
= 40 V,
T
A
65
CC
Output sink current, FEEDBACK
Output source current, FEEDBACK
V
V
= –15 mV to –5 V, FEEDBACK = 0.5 V
0.3
–2
0.7
mA
mA
ID
= 15 mV to 5 V,
FEEDBACK = 3.5 V
ID
‡
All typical values except for parameter changes with temperature are at T = 25°C.
A
oscillator section, C = 0.01 µF, R = 12 kΩ (see Figure 2)
T
T
TL594C, TL594I
†
PARAMETER
UNIT
TEST CONDITIONS
‡
MIN TYP
MAX
Frequency
10
100
1
kHz
¶
Standard deviation of frequency
All values of V , C , R , and T constant
Hz/kHz
Hz/kHz
CC
T
T
A
Frequency change with voltage
V
CC
= 7 V to 40 V,
T = 25°C
A
#
Frequency change with temperature
∆T = MIN to MAX
A
50 Hz/kHz
†
‡
¶
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
All typical values except for parameter changes with temperature are at T = 25°C.
A
Standard deviation is a measure of the statistical distribution about the mean as derived from the formula:
N
2
X)
(x
n
n
1
N
1
#
Temperature coefficient of timing capacitor and timing resistor not taken into account.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
