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參數(shù)資料
| 型號： | LM2578MWC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.75 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, UUC |
| 封裝： | WAFER |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 1127K |
| 代理商： | LM2578MWC |
National P/N LM2578A - Switching Regulator
LM2578AMX
8
Full
production
N/A
1K+ $1.3500
reel
of
2500
[logo]2T
2578
AM
LM2578AN
8
Full
production
N/A
1K+ $1.3500
rail
of
40
[logo]UZ2T
LM2578AN
LM2578 MDC
Full
production
N/A
N/A Samples
tray
of
N/A
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LM2578 MWC
Full
production
N/A
wafer
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General Description
The LM1578A is a switching regulator which can easily be set up for such DC-to-DC voltage conversion
circuits as the buck, boost, and inverting configurations. The LM1578A features a unique comparator input
stage which not only has separate pins for both the inverting and non-inverting inputs, but also provides an
internal 1.0V reference to each input, thereby simplifying circuit design and p.c. board layout. The output
can switch up to 750 mA and has output pins for its collector and emitter to promote design flexibility. An
external current limit terminal may be referenced to either the ground or the Vin terminal, depending upon
the application. In addition, the LM1578A has an on board oscillator, which sets the switching frequency with
a single external capacitor from <1 Hz to 100 kHz (typical).
The LM1578A is an improved version of the LM1578, offering higher maximum ratings for the total supply
voltage and output transistor emitter and collector voltages.
Features
q
Inverting and non-inverting feedback inputs
q
1.0V reference at inputs
q
Operates from supply voltages of 2V to 40V
q
Output current up to 750 mA, saturation less than 0.9V
q
Current limit and thermal shut down
q
Duty cycle up to 90%
Applications
q
Switching regulators in buck, boost, inverting, and single-ended transformer configurations
q
Motor speed control
q
Lamp flasher
Application Notes
Title
Size in Kbytes Date
View Online Download Receive via Email
AB-30: Application Brief 30 RS-
232 Line Driver Power Supply
23 Kbytes
1-May-98 View Online
file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM2578A.html (2 of 3) [09-Aug-2002 12:40:14 PM]
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| LM2581 | 制造商:NEC 功能描述:258 NEC'90 SMT TUBES N9F8A |
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| LM2585S-12 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| LM2585S-12/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| LM2585S-3.3 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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