- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄44546 > LM2574-12MDC (NATIONAL SEMICONDUCTOR CORP) 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC PDF資料下載
參數(shù)資料
| 型號(hào)： | LM2574-12MDC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC |
| 封裝： | DIE |
| 文件頁(yè)數(shù)： | 2/33頁(yè) |
| 文件大?。?/td> | 814K |
| 代理商： | LM2574-12MDC |
第1頁(yè)當(dāng)前第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)
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 pos-
sible. Single-point grounding (as indicated) or ground plane
construction 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
DS011394-11
CIN — 22 F, 75V
Aluminum Electrolytic
COUT — 220 F, 25V
Aluminum Electrolytic
D1 — Schottky, 11DQ06
L1 — 330 H, 52627
(for 5V in, 3.3V out, use
100 H, RL-1284-100)
R1 — 2k, 0.1%
R2 — 6.12k, 0.1%
Adjustable Output Voltage Version
DS011394-12
FIGURE 2.
www.national.com
10
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2574-5.0MDC | 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC |
| LM2574-3.3MDC | 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, UUC |
| LM2574N-5 | 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDIP8 |
| LM2574DW-ADJ | 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDSO16 |
| LM2574N-ADJ | 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDIP8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2574-12YN | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 0.5A Step-Down SMPS Regulator (Lead Free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM2574-15 | 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:EASY SWITCHERE⑩ 0.5 A STEP-DOWN VOLTAGE REGULATOR |
| LM2574-15BN | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Voltage-Mode SMPS Controller |
| LM2574-15BWM | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Voltage-Mode SMPS Controller |
| LM2574-3.3 | 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:EASY SWITCHERE⑩ 0.5 A STEP-DOWN VOLTAGE REGULATOR |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。