參數(shù)資料
型號(hào)： LM2577SX-15/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 6 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, PSSO5
封裝： TO-263, 5 PIN
文件頁(yè)數(shù)： 27/34頁(yè)
文件大?。?/td> 1008K
代理商： LM2577SX-15/NOPB
National P/N LM2577 - SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577S-15
5
Full
production
N/A
1K+ $3.1200
rail
of
45
[logo]UZ2T
LM2577S
-15 P+
LM2577S-ADJ TO 263
5
Full
production
N/A
1K+ $3.1200
rail
of
45
[logo]UZ2T
LM2577S
-ADJ P+
LM2577SX-12 TO 263
5
Full
production
N/A
1K+ $3.1200
reel
of
500
[logo]UZ2T
LM2577S
-12 P+
LM2577SX-15 TO 263
5
Full
production
N/A
1K+ $3.1200
reel
of
500
[logo]UZ2T
LM2577S
-15 P+
LM2577SX-
ADJ
5
Full
production
N/A
1K+ $3.1200
reel
of
500
[logo]UZ2T
LM2577S
-ADJ P+
LM2577-ADJ
MDC
Full
production
N/A
tray
of
N/A
-
LM2577-ADJ
MWC
Full
production
N/A
wafer
jar
of
N/A
-
General Description
The LM1577/LM2577 are monolithic integrated circuits that provide all of the power and control functions for
step-up (boost), flyback, and forward converter switching regulators. The device is available in three
different output voltage versions: 12V, 15V, and adjustable.
Requiring a minimum number of external components, these regulators are cost effective, and simple to use.
Listed in this data sheet are a family of standard inductors and flyback transformers designed to work with
these switching regulators.
Included on the chip is a 3.0A NPN switch and its associated protection circuitry, consisting of current and
thermal limiting, and undervoltage lockout. Other features include a 52 kHz fixed-frequency oscillator that
requires no external components, a soft start mode to reduce in-rush current during start-up, and current
mode control for improved rejection of input voltage and output load transients.
Features
q
Requires few external components
q
NPN output switches 3.0A, can stand off 65V
q
Wide input voltage range: 3.5V to 40V
q
Current-mode operation for improved transient response, line regulation, and current limit
q
52 kHz internal oscillator
q
Soft-start function reduces in-rush current during start-up
q
Output switch protected by current limit, under-voltage lockout, and thermal shutdown
Applications
file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM2577.html (3 of 4) [Aug-09-2002 12:20:04 PM]
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2577SX-ADJ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2577SX-ADJ/NOPB 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2577T-12 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2577T12 制造商:Texas Instruments 功能描述:SWITCHING REG 3A 12V 2577 TO2205
LM2577T-12/LB03 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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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