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參數(shù)資料
| 型號： | TL3845Y |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, UUC8 |
| 封裝： | DIE-8 |
| 文件頁數(shù)： | 12/12頁 |
| 文件大小： | 171K |
| 代理商： | TL3845Y |
TL284x, TL384x
CURRENT-MODE PWM CONTROLLERS
SLVS038E – JANUARY 1989 – REVISED DECEMBER 1999
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
Zi
Zf
VFB
COMP
2.5 V
0.5 mA
Error
Amplifier
NOTE A:
Error amplifier can source or sink up to 0.5 mA.
+
–
Figure 1. Error-Amplifier Configuration
NOTE A: Peak current (IS) is determined by the formula:
A small RC filter formed by resistor Rf and capacitor Cf may be required to suppress switch transients.
COMP
ISENSE
GND
RS
Cf
Rf
Error
Amplifier
2R
R1 V
Current-Sense
Comparator
I
S(max) +
1V
R
S
IS
(see Note A)
+
–
Figure 2. Current-Sense Circuit
CT
RT
(see Note A)
NOTE A: For RT > 5 k:
REF
RT/CT
GND
f
[ 1.72
R
TCT
Figure 3. Oscillator Section
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相關代理商/技術參數(shù) |
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|---|---|
| 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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