參數(shù)資料
型號(hào)： LM2576HV-5MDC
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC
封裝： DIE
文件頁(yè)數(shù)： 19/27頁(yè)
文件大小： 741K
代理商： LM2576HV-5MDC
National P/N LM2576 - SIMPLE SWITCHER 3A Step-Down Voltage Regulator
The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a
step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation.
These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version.
Requiring a minimum number of external components, these regulators are simple to use and include
internal frequency compensation and a fixed-frequency oscillator.
The LM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It
substantially reduces the size of the heat sink, and in some cases no heat sink is required.
A standard series of inductors optimized for use with the LM2576 are available from several different
manufacturers. This feature greatly simplifies the design of switch-mode power supplies.
Other features include a guaranteed ±4% tolerance on output voltage within specified input voltages and
output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 A
(typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal
shutdown for full protection under fault conditions.
Features
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3.3V, 5V, 12V, 15V, and adjustable output versions
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Adjustable version output voltage range, 1.23V to 37V (57V for HV version) ±4% max over line and
load conditions
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Guaranteed 3A output current
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Wide input voltage range, 40V up to 60V for HV version
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Requires only 4 external components
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52 kHz fixed frequency internal oscillator
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TTL shutdown capability, low power standby mode
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High efficiency
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Uses readily available standard inductors
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Thermal shutdown and current limit protection
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P+ Product Enhancement tested
Applications
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Simple high-efficiency step-down (buck) regulator
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Efficient pre-regulator for linear regulators
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On-card switching regulators
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Positive to negative converter (Buck-Boost)
Design Tools
Title
Size in Kbytes Date
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SimpleSwitcher DC-DC
Converters Design Software
10 Kbytes
12-Jun-
2002
If you have trouble printing or viewing PDF file(s), see Printing Problems.
Application Notes
file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM2576.html (4 of 5) [Aug-09-2002 2:05:44 PM]
相關(guān)PDF資料
PDF描述
LM2576-15MDC 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2576HV-ADJ 制造商:FCI 制造商全稱:First Components International 功能描述:SMIPLE SWITCHER 3.0A Step-Down Voltage Regulator
LM2576HVS-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
LM2576HVS-12/NOPB 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 3A STEP-DOWN VLTG REG 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
LM2576HVS-15 功能描述:IC REG BUCK 15V 3A TO263-5 RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:SIMPLE SWITCHER® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:降壓（降壓） 輸出類(lèi)型:固定 輸出數(shù):1 輸出電壓:3.3V 輸入電壓:4.5 V ~ 24 V PWM 型:- 頻率 - 開(kāi)關(guān):- 電流 - 輸出:125mA 同步整流器:無(wú) 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:SOT-23-6 包裝:Digi-Reel® 供應(yīng)商設(shè)備封裝:SOT-6 其它名稱:MAX1836EUT33#TG16DKR
LM2576HVS-3.3 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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