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參數(shù)資料
| 型號： | LM2586-ADJMDC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 7 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, UUC |
| 封裝： | DIE |
| 文件頁數(shù)： | 25/32頁 |
| 文件大?。?/td> | 858K |
| 代理商： | LM2586-ADJMDC |
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National P/N LM2586 - SIMPLE SWITCHER 3-Amp Flyback Regulator
LM2586-12
MWC
Full
production
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LM2586-5.0
MWC
Full
production
N/A
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N/A
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LM2586-ADJ
MWC
Full
production
N/A
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jar
of
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General Description
The LM2586 series of regulators are monolithic integrated circuits specifically designed for flyback, step-up
(boost), and forward converter applications. The device is available in 4 different output voltage versions:
3.3V, 5.0V, 12V, and adjustable.
Requiring a minimum number of external components, these regulators are cost effective, and simple to use.
Included in the datasheet are typical circuits of boost and flyback regulators. Also listed are selector guides
for diodes and capacitors and a family of standard inductors and flyback transformers designed to work with
these switching regulators.
The power switch is a 3.0A NPN device that can stand-off 65V. Protecting the power switch are current and
thermal limiting circuits, and an undervoltage lockout circuit. This IC contains an adjustable frequency
oscillator that can be programmed up to 200 kHz. The oscillator can also be synchronized with other devices,
so that multiple devices can operate at the same switching frequency.
Other features include 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 and cycle-by-cycle current limiting. The
device also has a shutdown pin, so that it can be turned off externally. An output voltage tolerance of ±4%,
within specified input voltages and output load conditions, is guaranteed for the power supply system.
Features
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Requires few external components
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Family of standard inductors and transformers
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NPN output switches 3.0A, can stand off 65V
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Wide input voltage range: 4V to 40V
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Adjustable switching frequency: 100 kHz to 200 kHz
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External shutdown capability
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Draws less than 60 A when shut down
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Frequency synchronization
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Current-mode operation for improved transient response, line regulation, and current limit
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Internal soft-start function reduces in-rush current during start-up
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Output transistor protected by current limit, under voltage lockout, and thermal shutdown
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System output voltage tolerance of ±4% max over line and load conditions
Applications
file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM2586.html (3 of 4) [Aug-09-2002 2:07:35 PM]
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2586SX-12/NOPB | 3 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, PSSO7 |
| LM2587SX-3.3/NOPB | 5 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PSSO5 |
| LM2588-12MWC | 9.5 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, UUC |
| LM2588-12MDC | 9.5 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, UUC |
| LM2588-ADJMWC | 9.5 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, UUC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2586S-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 |
| LM2586S-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 |
| LM2586S-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 |
| LM2586S-3.3/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 |
| LM2586S-5.0 | 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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