- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄44546 > LM2574-3.3MDC (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)： | LM2574-3.3MDC |
| 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)： | 26/33頁(yè) |
| 文件大?。?/td> | 814K |
| 代理商： | LM2574-3.3MDC |
第1頁(yè)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)當(dāng)前第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)
National P/N LM2574HV - SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator
LM2574HVN-ADJ
8
Full
production
N/A
1K+ $2.0500
rail
of
40
[logo]UZ2T
LM2574HVN
-ADJ P+
LM2574HV-5 MDC
Full
production
N/A
tray
of
N/A
-
LM2574HV-5
MWC
Full
production
N/A
wafer
jar
of
N/A
-
General Description
The LM2574 series of regulators are monolithic integrated circuits that provide all the active functions for a
step-down (buck) switching regulator, capable of driving a 0.5A 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 LM2574 series offers a high-efficiency replacement for popular three-terminal linear regulators. Because
of its high efficiency, the copper traces on the printed circuit board are normally the only heat sinking
needed.
A standard series of inductors optimized for use with the LM2574 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
q
3.3V, 5V, 12V, 15V, and adjustable output versions
q
Adjustable version output voltage range, 1.23V to 37V (57V for HV version) ±4% max over line and
load conditions
q
Guaranteed 0.5A output current
q
Wide input voltage range, 40V, up to 60V for HV version
q
Requires only 4 external components
q
52 kHz fixed frequency internal oscillator
q
TTL shutdown capability, low power standby mode
q
High efficiency
q
Uses readily available standard inductors
q
Thermal shutdown and current limit protection
Applications
q
Simple high-efficiency step-down (buck) regulator
q
Efficient pre-regulator for linear regulators
q
On-card switching regulators
q
Positive to negative converter (Buck-Boost)
file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM2574HV.html (3 of 4) [Aug-09-2002 1:59:13 PM]
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| LM2574DW-ADJR2 | 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDSO16 |
| LM2574N-15 | 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 |
|---|---|
| LM2574-5 | 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 |
| LM2574-5.0 WAF | 制造商:Texas Instruments 功能描述: |
| LM2574-5.0BN | 功能描述:IC REG BUCK 5V 0.5A 8DIP RoHS:否 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:- 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類(lèi)型:降壓（降壓） 輸出類(lèi)型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開(kāi)關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱(chēng):*LM2575HVN-12LM2575HVN-12 |
| LM2574-5.0BWM | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM2574-5.0YN | 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。