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TL284X Datasheet(PDF) 6 Page - Texas Instruments

Part No. TL284X
Description  CURRENT-MODE PWM CONTROLLERS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

TL284X Datasheet(HTML) 6 Page - Texas Instruments

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TL284x, TL384x
CURRENT-MODE PWM CONTROLLERS
SLVS038E – JANUARY 1989 – REVISED DECEMBER 1999
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range, VCC = 15 V (see
Note 4), RT = 10 k, CT = 3.3 nF (unless otherwise specified) (continued)
supply voltage
PARAMETER
TEST CONDITIONS
TL284x
TL384x
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
MIN
TYP†
MAX
UNIT
Start-up current
0.5
1
0.5
1
mA
Operating supply current
VFB and ISENSE at 0 V
11
17
11
17
mA
Limiting voltage
ICC = 25 mA
34
34
V
† All typical values are at TA = 25°C.
NOTE 4: Adjust VCC above the start threshold before setting it to 15 V.
electrical characteristics, VCC = 15 V (see Note 4), RT= 10 k, CT = 3.3 nF, TA = 25°C (unless otherwise
specified)
reference section
PARAMETER
TEST CONDITIONS
TL384xY
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Output voltage
IO = 1 mA
5
V
Line regulation
VCC = 12 V to 25 V
6
mV
Load regulation
IO = 1 mA to 20 mA
6
mV
Temperature coefficient of output voltage
0.2
mV/
°C
Output noise voltage
f = 10 Hz to 10 kHz
50
µV
Output-voltage long-term drift
After 1000 h at TA = 25°C
5
mV
Short-circuit output current
–100
mA
NOTE 4: Adjust VCC above the start threshold before setting it to 15 V.
oscillator section
PARAMETER
TEST CONDITIONS
TL384xY
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Oscillator frequency (see Note 5)
52
kHz
Frequency change with supply voltage
VCC = 12 V to 25 V
2
Hz/kHz
Frequency change with temperature
5
Hz/kHz
Peak-to-peak amplitude at RT/CT
1.7
V
NOTES:
4. Adjust VCC above the start threshold before setting it to 15 V.
5. Output frequency equals oscillator frequency for the TLx842 and TLx843. Output frequency is one-half oscillator frequency for the
TLx844 and TLx845.


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