- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385490 > LM9073S (NATIONAL SEMICONDUCTOR CORP) Dual High Current Low-Dropout System Regulator PDF資料下載
參數(shù)資料
| 型號： | LM9073S |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Dual High Current Low-Dropout System Regulator |
| 中文描述： | DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PSSO11 |
| 封裝： | TO-263, 11 PIN |
| 文件頁數(shù)： | 14/18頁 |
| 文件大小： | 718K |
| 代理商： | LM9073S |
Application Information
(Continued)
Input Stability
Low dropout voltage regulators which utilize a PNP power
transistor usually exhibit a large increase in current when in
dropout (Vin
<
5.5V). This increase is caused by the satura-
tion characteristics (
β
reduction) of the PNP transistor. To
significantly minimize this increase in current the LM9073
detects when the PNP enters the saturation and reduces the
operating current.
This reduction in input current can create a stability problem
in applications with higher load current (
>
200mA). where the
input voltage is applied through a long length of wire which in
effect add a significant amount of inductance in series with
the input. The drop in input current may create a positive in-
put voltage transient which may take the PNP out of satura-
tion. If the input voltage is held constant at the threshold
where the PNP is going in and out of saturation, an oscilla-
tion may be created.
This is only observed where a large series inductance is
present in the input supply line and when the rise and fall
time of the input supply is very slow. If the application and re-
moval of the input voltage changes at a rate greater than
500mV/mS it will move through the dropout region of the
regulator (Vin of 3V to 5.5V) too quickly for an oscillation to
be established.
Figure 6. Simple Logic Configuration to Provide
ON/OFF Sensing
DS101296-21
L
www.national.com
14
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM9073T | Dual High Current Low-Dropout System Regulator |
| LM9074 | Rheostat; Series:MP; Power Rating:300W; Resistance Max:200ohm; Terminal Type:Lugs; Resistance:200ohm; Type:Rheostat |
| LM9074M | Rheostat; Series:MP; Power Rating:300W; Resistance Max:25ohm; Terminal Type:Lugs; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No; Resistance:25ohm; Type:Rheostat |
| LM90 | 3 Degree Celcious Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
| LM90CIMM | 3 Degree Celcious Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM9073SX | 功能描述:IC REG LDO 5V .7A/.1A TO-263-11 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:1 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最小）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| LM9073T | 制造商:Rochester Electronics LLC 功能描述:5V DUAL OUTPUT TRACKING REGL - Bulk |
| LM9073T/NOPB | 功能描述:IC REG LDO 5V .7A/.1A TO-220-11 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:1 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應(yīng)商設(shè)備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| LM9074 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:System Voltage Regulator with Keep-Alive ON/OFF |
| LM9074EP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Enhanced Plastic System Voltage Regulator with Keep-Alive ON/OFF Control |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。