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參數(shù)資料
| 型號(hào)： | TL284xP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | CURRENT-MODE PWM CONTROLLERS |
| 中文描述： | 電流模式PWM控制器 |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大小： | 171K |
| 代理商： | TL284XP |
TL284x, TL384x
CURRENT-MODE PWMCONTROLLERS
SLVS038E – JANUARY 1989 – REVISED DECEMBER 1999
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range, V
CC
= 15 V (see
Note 4), R
T
= 10 k
, C
T
= 3.3 nF (unless otherwise specified) (continued)
supply voltage
PARAMETER
TEST CONDITIONS
TL284x
TYP
TL384x
TYP
UNIT
MIN
MAX
MIN
MAX
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
All typical values are at TA = 25
°
C.
NOTE 4: Adjust VCC above the start threshold before setting it to 15 V.
ICC = 25 mA
34
34
V
electrical characteristics, V
CC
= 15 V (see Note 4), R
T
= 10 k
, C
T
= 3.3 nF, T
A
= 25
°
C (unless otherwise
specified)
reference section
PARAMETER
TEST CONDITIONS
TL384xY
TYP
UNIT
MIN
MAX
Output voltage
IO = 1 mA
VCC = 12 V to 25 V
IO = 1 mA to 20 mA
5
V
Line regulation
6
mV
Load regulation
6
mV
mV/
°
C
μ
V
mV
Temperature coefficient of output voltage
0.2
Output noise voltage
f = 10 Hz to 10 kHz
After 1000 h at TA = 25
°
C
50
Output-voltage long-term drift
5
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
TYP
UNIT
MIN
MAX
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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