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參數(shù)資料
| 型號： | TL3845Y |
| 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 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 171K |
| 代理商： | TL3845Y |
TL284x, TL384x
CURRENT-MODE PWMCONTROLLERS
SLVS038E – JANUARY 1989 – REVISED DECEMBER 1999
4
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)
reference section
PARAMETER
TEST CONDITIONS
TL284x
TYP
TL384x
TYP
UNIT
MIN
MAX
MIN
MAX
Output voltage
IO = 1 mA,
VCC = 12 V to 25 V
IO = 1 mA to 20 mA
TA = 25
°
C
4.95
5
5.05
4.9
5
5.1
V
Line regulation
6
20
6
20
mV
Load regulation
6
25
6
25
mV
Temperature coefficient
of output voltage
0.2
0.4
0.2
0.4
mV/
°
C
Output voltage
with worst-case variation
VCC = 12 V to 25 V,
IO = 1 mA to 20 mA
4.9
5.1
4.82
5.18
V
Output noise voltage
f = 10 Hz to 10 kHz,
After 1000 h at TA = 25
°
C
TA = 25
°
C
50
50
μ
V
mV
Output-voltage long-term drift
5
25
5
25
Short-circuit output current
All typical values are at TA = 25
°
C.
NOTE 4: Adjust VCC above the start threshold before setting it to 15 V.
oscillator section
–30
–100
–180
–30
–100
–180
mA
PARAMETER
TEST CONDITIONS
TL284x
TYP
TL384x
TYP
UNIT
MIN
MAX
MIN
MAX
Oscillator frequency (see Note 5)
TA = 25
°
C
VCC = 12 V to 25 V
47
52
57
47
52
57
kHz
Frequency change with supply voltage
2
10
2
10
Hz/kHz
Frequency change with temperature
50
50
Hz/kHz
Peak-to-peak amplitude at RT/CT
All typical values are at TA = 25
°
C.
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.
1.7
1.7
V
error-amplifier section
PARAMETER
TEST CONDITIONS
TL284x
TYP
TL384x
TYP
UNIT
MIN
MAX
MIN
MAX
Feedback input voltage
COMP at 2.5 V
2.45
2.50
2.55
2.42
2.50
2.58
V
μ
A
dB
Input bias current
–0.3
–1
–0.3
–2
Open-loop voltage amplification
VO = 2 V to 4 V
65
90
65
90
Gain-bandwidth product
0.7
1
0.7
1
MHz
Supply-voltage rejection ratio
VCC = 12 V to 25 V
VFB at 2.7 V,
60
70
60
70
dB
Output sink current
COMP at 1.1 V
2
6
2
6
mA
Output source current
VFB at 2.3 V,
COMP at 5 V
RL = 15 k
to GND
RL = 15 k
to GND
–0.5
–0.8
–0.5
–0.8
mA
High-level output voltage
VFB at 2.3 V,
5
6
5
6
V
Low-level output voltage
All typical values are at TA = 25
°
C.
NOTE 4: Adjust VCC above the start threshold before setting it to 15 V.
VFB at 2.7 V,
0.7
1.1
0.7
1.1
V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TL384x | CURRENT-MODE PWM CONTROLLERS |
| TL384xD | CURRENT-MODE PWM CONTROLLERS |
| TL284X | Test Jack; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes |
| TL284xD | CURRENT-MODE PWM CONTROLLERS |
| TL384xD-8 | CURRENT-MODE PWM CONTROLLERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TL384X | 制造商:TI 制造商全稱:Texas Instruments 功能描述:CURRENT-MODE PWM CONTROLLERS |
| TL384XB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS |
| TL384XD | 制造商:TI 制造商全稱:Texas Instruments 功能描述:CURRENT-MODE PWM CONTROLLERS |
| TL384XD-8 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:CURRENT-MODE PWM CONTROLLERS |
| TL384XP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:CURRENT-MODE PWM CONTROLLERS |
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