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參數(shù)資料
| 型號： | LM5000-3MTCX/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2.7 A SWITCHING REGULATOR, 840 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | TSSOP-16 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大小： | 388K |
| 代理商： | LM5000-3MTCX/NOPB |
February 2007
LM5000
High Voltage Switch Mode Regulator
General Description
The LM5000 is a monolithic integrated circuit specifically de-
signed and optimized for flyback, boost or forward power
converter applications. The internal power switch is rated for
a maximum of 80V, with a current limit set to 2A. Protecting
the power switch are current limit and thermal shutdown cir-
cuits. The current mode control scheme provides excellent
rejection of line transients and cycle-by-cycle current limiting.
An external compensation pin and the built-in slope compen-
sation allow the user to optimize the frequency compensation.
Other distinctive features include softstart to reduce stresses
during start-up and an external shutdown pin for remote ON/
OFF control. There are two operating frequency ranges avail-
able. The LM5000-3 is pin selectable for either 300kHz (FS
Grounded) or 700kHz (FS Open). The LM5000-6 is pin se-
lectable for either 600kHz (FS Grounded) or 1.3MHz (FS
Open). The device is available in a low profile 16-lead TSSOP
package or a thermally enhanced 16-lead LLP package.
Features
■ 80V internal switch
■ Operating input voltage range of 3.1V to 40V
■ Pin selectable operating frequency
300kHz/700kHz (-3)
600kHz/1.3MHz (-6)
■ Adjustable output voltage
■ External compensation
■ Input undervoltage lockout
■ Softstart
■ Current limit
■ Over temperature protection
■ External shutdown
■ Small 16-Lead TSSOP or 16-Lead LLP package
Applications
■ Flyback Regulator
■ Forward Regulator
■ Boost Regulator
■ DSL Modems
■ Distributed Power Converters
Typical Application Circuit
20031901
LM5000 Flyback Converter
2007 National Semiconductor Corporation
200319
www.national.com
LM5000
High
Voltage
Switch
Mode
Regulator
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM5000-3MYC | 制造商:Texas Instruments 功能描述: |
| LM5000EP | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Enhanced Plastic High Voltage Switch Mode Regulator |
| LM5000EVAL | 功能描述:電源管理IC開發(fā)工具 LM5000 EVAL UNIT RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM5000EVAL/NOPB | 功能描述:EVALUATION BOARD FOR LM5000 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| LM5000SD-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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