參數(shù)資料
型號(hào)： LP2951CM.TR
英文描述： Analog IC
中文描述： 模擬IC
文件頁(yè)數(shù)： 11/21頁(yè)
文件大小： 640K
代理商： LP2951CM.TR
Application Hints
(Continued)
REDUCING OUTPUT NOISE
In reference applications it may be advantageous to reduce
the AC noise present at the output. One method is to reduce
the regulator bandwidth by increasing the size of the output
capacitor. This is the only way noise can be reduced on the
3 lead LP2950 but is relatively inefficient, as increasing the
capacitor from 1 μF to 220 μF only decreases the noise from
430 μV to 160 μV rms for a 100 kHz bandwidth at 5V output.
Noise can be reduced fourfold by a bypass capacitor across
R
, since it reduces the high frequency gain from 4 to unity.
Pick
or about 0.01 μF. When doing this, the output capacitor must
be increased to 3.3 μF to maintain stability. These changes
reduce the output noise from 430 μV to 100 μV rms for a
100 kHz bandwidth at 5V output. With the bypass capacitor
added, noise no longer scales with output voltage so that im-
provements are more dramatic at higher output voltages.
DS008546-7
*
See Application Hints
feDrive with TTL-high to shut down. Ground or leave open if shutdown
Note:
Pins 2 and 6 are left open.
FIGURE 2. Adjustable Regulator
www.national.com
11
相關(guān)PDF資料
PDF描述
LP2951CM-3.3TR Fixed & Adjustable Voltage Regulator
LP2951CMTR Fixed & Adjustable Voltage Regulator
LP2952AIMX-3.3 THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS
LP2952IMX THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS
LP2952IMX-3.3 THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LP2951CMX 功能描述:低壓差穩(wěn)壓器 - LDO adl Voltage Reg Micro Power RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
LP2951CMX NOPB 制造商:National Semiconductor 功能描述:LDO Regulator Pos 1.24V to 29V 0.1A 8-Pin SOIC T/R
LP2951CMX/E5002366 制造商:Texas Instruments 功能描述:
LP2951CMX/E7002608 制造商:Texas Instruments 功能描述:
LP2951CMX/E7002698 制造商:Texas Instruments 功能描述:
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*