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參數資料
| 型號： | LM2576T-ADJFLOWLB03 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.5 A SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, PSFM5 |
| 封裝： | BENT STAGGERED, TO-220, 5 PIN |
| 文件頁數： | 2/24頁 |
| 文件大小： | 750K |
| 代理商： | LM2576T-ADJFLOWLB03 |
Test Circuit and Layout Guidelines
As in any switching regulator, layout is very important. Rap-
idly switching currents associated with wiring inductance
generate voltage transients which can cause problems. For
minimal inductance and ground loops, the length of the leads
indicated by heavy lines should be kept as short as possible.
Single-point grounding (as indicated) or ground plane con-
struction should be used for best results. When using the
Adjustable version, physically locate the programming resis-
tors near the regulator, to keep the sensitive feedback wiring
short.
Fixed Output Voltage Versions
01147607
CIN — 100 F, 75V, Aluminum Electrolytic
COUT — 1000 F, 25V, Aluminum Electrolytic
D1 — Schottky, MBR360
L1 — 100 H, Pulse Eng. PE-92108
R1 — 2k, 0.1%
R2 — 6.12k, 0.1%
Adjustable Output Voltage Version
01147608
where VREF = 1.23V, R1 between 1k and 5k.
FIGURE 2.
LM2576/LM2576HV
www.national.com
10
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| LM2576T-12/LB03 | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5 |
| LM2576HVT-ADJFLOWLB03/NOPB | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, ZFM5 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM2576T-ADJG | 功能描述:直流/直流開關調節(jié)器 3A 1.23-37V ADJ Buck PWM RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM2576T-ADJ-H | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller |
| LM2576T-ADJLB03 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| LM2576T-ADJ-V | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller |
| LM2576TV | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:3.0A, 15V, Step-Down Switching Regulator |
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