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參數(shù)資料
| 型號： | LM349J |
| 英文描述： | Voltage-Feedback Operational Amplifier |
| 中文描述： | 電壓反饋運(yùn)算放大器 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 291K |
| 代理商： | LM349J |
LM3490
100 mA, SOT-23, Quasi Low-Dropout Linear Voltage
Regulator with Logic-Controlled ON/OFF
General Description
The LM3490 is an integrated linear voltage regulator. It fea-
tures operation from an input as high as 30V and a guaran-
teed maximum dropout of 1.2V at the full 100 mA load. Stan-
dard packaging for the LM3490 is the 5-lead SOT-23
package. A logic-controlled ON/OFF feature makes the
LM3490 ideal for powering subsystems ON and OFF as
needed.
The 5, 12, and 15V members of the LM3490 series are in-
tended as tiny alternatives to industry standard LM78LXX
series and similar devices. The 1.2V quasi low dropout of
LM3490 series devices makes them a nice fit in many appli-
cations where the 2 to 2.5V dropout of LM78LXX series de-
vices precludes their (LM78LXX series devices) use.
The LM3490 series features a 3.3V member. The SOT pack-
aging and quasi low dropout features of the LM3490 series
converge in this device to provide a very nice, very tiny 3.3V,
100 mA bias supply that regulates directly off the system
5V
±
5% power supply.
Key Specifications
n
30V maximum input for operation
n
1.2V guaranteed maximum dropout over full load and
temperature ranges
n
100 mA guaranteed load current
n
±
5% guaranteed output voltage tolerance over full load
and temperature ranges
n
40 to +125C junction temperature range for operation
Features
n
3.3, 5, 12, and 15V versions available
n
Logic-controlled ON/OFF
n
Packaged in the tiny 5-lead SOT-23 package
Applications
n
Tiny alternative to LM78LXX series and similar devices
n
Tiny 5V
±
5% to 3.3V, 100 mA converter
n
Post regulator for switching DC/DC converter
n
Bias supply for analog circuits
Typical Application Circuit
Connection Diagram
DS100071-2
DS100071-1
Top View
SOT-23 Package
5-Lead, Molded-Plastic Small-Outline Transistor (SOT) Package
Package Code MA05B
(Note 1)
June 1999
L
O
1999 National Semiconductor Corporation
DS100071
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM3490IM5X-12 | 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF |
| LM3490IM5-3.3 | 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF |
| LM3490IM5X-15 | 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF |
| LM3490IM5X-3.3 | 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF |
| LM3490IM5-12 | 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM349N | 制造商:National Semiconductor Corporation 功能描述:Operational Amplifier, Quad AMP, Bipolar, 14 Pin, Plastic, DIP |
| LM349N/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| LM349N/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Feedback Operational Amplifier |
| LM34A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Fahrenheit Temperature Sensors |
| LM34AH | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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