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參數(shù)資料
| 型號： | UCC1804L |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Low-Power BiCMOS Current-Mode PWM |
| 中文描述： | 低功耗BiCMOS電流模式PWM |
| 文件頁數(shù)： | 6/20頁 |
| 文件大?。?/td> | 383K |
| 代理商： | UCC1804L |
6
UCC1800/1/2/3/4/5
UCC2800/1/2/3/4/5
UCC3800/1/2/3/4/5
Figure 1. Oscillator.
Figure 2. Error amplifier gain/phase response.
The UCC3800/1/2/3/4/5 oscillator generates a sawtooth
waveform on RC. The rise time is set by the time constant
of R
T
and C
T
. The fall time is set by CT and an internal tran-
sistor on-resistance of approximately 125 . During the fall
time, the output is off and the maximum duty cycle is re-
duced below 50% or 100% depending on the part number.
Larger timing capacitors increase the discharge time and re-
duce the maximum duty cycle and frequency.
4.00
3.98
3.96
3.94
3.92
3.90
3.88
3.86
3.84
3.82
4
4.2
4.4
4.6
4.8
5
5.2
5.4
5.6
5.8
6
V
(V)
CC
V
(
R
Figure 3. UCC1803/5 V
REF
vs. V
CC
; I
LOAD
= 0.5mA.
1000
100
10
10
100
R (k )
T
1000
O
100pF
200pF
330pF
1nF
Figure 4. UCC1800/1/2/4 oscillator frequency vs. R
T
and
C
T
.
相關PDF資料 |
PDF描述 |
|---|---|
| UCC2801PWTR | Low-Power BiCMOS Current-Mode PWM |
| UCC2802PWTR | Low-Power BiCMOS Current-Mode PWM |
| UCC3803J | Low-Power BiCMOS Current-Mode PWM |
| UCC2800PWTR | Low-Power BiCMOS Current-Mode PWM |
| UCC1803L | Low-Power BiCMOS Current-Mode PWM |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UCC1804L883B | 制造商:Texas Instruments 功能描述:BICMOS PWM - Rail/Tube |
| UCC1805 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power BiCMOS Current-Mode PWM |
| UCC1805J | 制造商:Texas Instruments 功能描述:Current Mode PWM Controller 1A 8-Pin CDIP Tube 制造商:Texas Instruments 功能描述:CURRENT MODE PWM CNTRLR 1A 8CDIP - Rail/Tube |
| UCC1805J883B | 制造商:Texas Instruments 功能描述:Current Mode PWM Controller 1A 8-Pin CDIP Tube |
| UCC1805L | 制造商:Texas Instruments 功能描述:CURRENT MODE PWM CNTRLR 1A 20LCCC - Rail/Tube |
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