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TL598CNE4 Fiches technique(PDF) 3 Page - Texas Instruments

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No de pièce TL598CNE4
Description  PULSE-WIDTH-MODULATION CONTROL CIRCUITS
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

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TL598
PULSEWIDTHMODULATION CONTROL CIRCUITS
SLVS053D − FEBRUARY 1988 − REVISED NOVEMBER 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
MIN
MAX
UNIT
VCC
Supply voltage
7
40
V
VI
Amplifier input voltage
0
VCC−2
V
IO
Collector voltage
40
V
IIL
Output current (each output), sink or source
200
mA
Current into feedback terminal
0.3
mA
CT
Timing capacitor
0.00047
10
µF
RT
Timing resistor
1.8
500
k
fosc
Oscillator frequency
1
300
kHz
TA
Operating free-air temperature
0
70
°C
electrical characteristics over recommended operating free-air temperature range, VCC = 15 V
(unless otherwise noted)
reference section (see Note 4)
PARAMETER
TEST CONDITIONS†
MIN
TYP‡
MAX
UNIT
Output voltage (REF)
IO = 1 mA
TA = 25°C
4.95
5
5.05
V
Output voltage (REF)
IO = 1 mA
TA = full range
4.9
5.1
V
Input regulation
VCC = 7 V to 40 V
TA = 25°C
2
25
mV
Output regulation
IO = 1 mA to 10 mA
TA = 25°C
1
15
mV
Output regulation
IO = 1 mA to 10 mA
TA = full range
50
mV
Output voltage change with temperature
∆TA = MIN to MAX
2
10
mV/V
Short-circuit output current§
REF = 0 V
−10
−48
mA
† Full range is 0°C to 70°C.
‡ All typical values, except for parameter changes with temperature, are at TA = 25°C.
§ Duration of the short circuit should not exceed one second.
NOTE 4: Pulse-testing techniques that maintain the junction temperature as close to the ambient temperature as possible must be used.
oscillator section, CT = 0.001 µF, RT = 12 kΩ (see Figure 1) (see Note 4)
PARAMETER
TEST CONDITIONS†
MIN
TYP‡
MAX
UNIT
Frequency
100
kHz
Standard deviation of frequency¶
All values of VCC, CT, RT, TA constant
100
Hz/kHz
Frequency change with voltage
VCC = 7 V to 40 V,
TA = 25°C
1
10
Hz/kHz
Frequency change with temperature#
∆TA = full range
70
120
Hz/kHz
Frequency change with temperature#
∆TA = full range,
CT = 0.01 µF
50
80
Hz/kHz
† Full range is 0°C to 70°C.
‡ All typical values, except for parameter changes with temperature, are at TA = 25°C.
¶ Standard deviation is a measure of the statistical distribution about the mean, as derived from the formula:
# Effects of temperature on external RT and CT are not taken into account.
NOTE 4. Pulse-testing techniques that maintain the junction temperature as close to the ambient temperature as possible must be used.
s +
N
n
+1
(xn * X)
2
N
* 1


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