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參數(shù)資料
| 型號： | UCC3800PWTRG4 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | CMOS |
| 中文描述： | 低功耗BiCMOS電流模式PWM |
| 文件頁數(shù)： | 6/20頁 |
| 文件大小： | 383K |
| 代理商： | UCC3800PWTRG4 |
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
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC3801 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power BiCMOS Current-Mode PWM |
| UCC3801D | 功能描述:電流型 PWM 控制器 Low-Power BiCMOS Current-Mode PWM RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| UCC3801D | 制造商:Texas Instruments 功能描述:PWM CONTROLLER SMD 3801 SOIC8 |
| UCC3801D/81212 | 制造商:Texas Instruments 功能描述: |
| UCC3801DG4 | 功能描述:電流型 PWM 控制器 Low-Power BiCMOS Current-Mode PWM RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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