參數(shù)資料
型號： LM2671-5.0MDC
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： 1.25 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, UUC
封裝： DIE
文件頁數(shù)： 14/30頁
文件大?。?/td> 612K
代理商： LM2671-5.0MDC
Application Information
TYPICAL SURFACE MOUNT PC BOARD LAYOUT,
FIXED OUTPUT (4X SIZE)
10004239
CIN - 15 F, 25V, Solid Tantalum Sprague, “594D series”
COUT - 68 F, 10V, Solid Tantalum Sprague, “594D series”
D1 - 1A, 40V Schottky Rectifier, Surface Mount
L1 - 47 H, L13, Coilcraft DO3308
CB - 0.01 F, 50V, Ceramic
TYPICAL SURFACE MOUNT PC BOARD LAYOUT,
ADJUSTABLE OUTPUT (4X SIZE)
Layout is very important in switching regulator designs. Rap-
idly switching currents associated with wiring inductance can
generate voltage transients which can cause problems. For
minimal inductance and ground loops, the wires indicated by
heavy lines (in
Figure 2 and Figure 3) should be wide
printed circuit traces and should be kept as short as
possible. For best results, external components should be
located as close to the switcher IC as possible using ground
plane construction or single point grounding.
If open core inductors are used, special care must be
taken as to the location and positioning of this type of induc-
tor. Allowing the inductor flux to intersect sensitive feedback,
IC ground path, and C
OUT wiring can cause problems.
10004240
CIN - 15 F, 50V, Solid Tantalum Sprague, “594D series”
COUT - 33 F, 25V, Solid Tantalum Sprague, “594D series”
D1 - 1A, 40V Schottky Rectifier, Surface Mount
L1 - 100 H, L20, Coilcraft DO3316
CB - 0.01 F, 50V, Ceramic
R1 - 1k, 1%
R2 - Use formula in Design Procedure
FIGURE 18. PC Board Layout
LM2671
www.national.com
21
相關(guān)PDF資料
PDF描述
LM2671-ADJMWC 1.25 A SWITCHING REGULATOR, 275 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
LM2671LD-12 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER㈢ Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features
LM2671LD-12/NOPB 功能描述:IC REG BUCK 12V 0.5A 16LLP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(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:- 類型:降壓（降壓） 輸出類型: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 - 開關(guān):- 電流 - 輸出:125mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型: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
LM2671LD-3.3 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features
LM2671LD-3.3/NOPB 功能描述:IC REG BUCK 3.3V 0.5A 16LLP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(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:- 類型:降壓（降壓） 輸出類型: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 - 開關(guān):- 電流 - 輸出:125mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型: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
LM2671LD-5.0 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features
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