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LM2576HV

更新时间： 2024-10-14 11:46:35
品牌 Logo 应用领域
南京豪纳 - HN 显示器开关电视电子DVD
页数 文件大小 规格书
8页 241K
描述
3A 开关型、最高输入60V电压、直流-直流降压转换电路。稳压压差要求3V,转换效率: 77-88% 应用:汽车电子,车载DVD,VCD,液晶显示器,液晶电视机

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LM2576HV 数据手册

 浏览型号LM2576HV的Datasheet PDF文件第2页浏览型号LM2576HV的Datasheet PDF文件第3页浏览型号LM2576HV的Datasheet PDF文件第4页浏览型号LM2576HV的Datasheet PDF文件第5页浏览型号LM2576HV的Datasheet PDF文件第6页浏览型号LM2576HV的Datasheet PDF文件第7页 
LM2576/LM2576HV  
Feb. 2009  
LM2576/LM2576HV Series  
3A Step-Down Switching Regulator  
DESCRIPTION  
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 ±1ꢀ4 on the oscillator frequency. External shutdown is included, featuring 5ꢀ µA (typical) standby  
current.  
The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault  
conditions.  
FEATURES  
APPLICATIONS  
ƒꢀ3.3V, 5V, 12V, 15V, and adjustable output versions  
ƒꢀAdjustable version output voltage range,  
1.23V to 37V (57V for HV version) ±±4 max over  
line and load conditions  
ƒꢀSimple high-efficiency step-down (buck) regulator  
ƒꢀEfficient pre-regulator for linear regulators  
ƒꢀOn-card switching regulators  
ƒꢀPositive to negative converter (Buck-Boost)  
ƒꢀNegative step-up converters  
ƒꢀPower supply for battery chargers  
ƒꢀThe pin-pin replacement of National Semi. and On  
Semi. Lm2576  
ƒꢀGuaranteed 3A output current  
ƒꢀWide input voltage range, ±ꢀV up to 6ꢀV for HV  
version  
ƒꢀRequires only ± external components  
ƒꢀ52 kHz fixed frequency internal oscillator  
ƒꢀTTL shutdown capability, low power standby mode  
ƒꢀHigh efficiency  
ƒꢀUses readily available standard inductors  
ƒꢀThermal shutdown and current limit protection  
ORDERING INFORMATION  
Output Voltage  
Package  
Type  
3.3  
5.ꢀ  
12  
15  
ADJ  
Temperature LM2576S-3.3  
LM2576S-5.0  
LM2576HVS-5.0  
LM2576T-5.0  
LM2576HVT-5.0  
LM2576S-12  
LM2576HVS-12  
LM2576T-12  
LM2576HVT-12  
LM2576S-15  
LM2576S-ADJ  
TO-263  
TO-22ꢀ  
Range  
LM2576HVS-3.3  
LM2576HVS-15 LM2576HVS-ADJ  
LM2576T-3.3  
LM2576HVT-3.3  
LM2576T-15  
LM2576HVT-15 LM2576HVT-ADJ  
LM2576T-ADJ  
Bent, Staggered Leads  
5-Lead TO-220 (T)  
Top View  
PIN CONNECTION  
TO-263 (S)  
5-Lead Surface-Mount Package  
Top View  
Straight Leads  
5-Lead TO-220 (T)  
Top View  
LM2576T-XX or LM2576HVT-XX  
LM2576T-XX  
or LM2576HVT-XX  
LM2576S-XX or LM2576HVS-XX  
地址: 南京市珠江路 88 号，新世界中心 B 座 4004 室, 邮编:210008  
ADD.: RM. 4004, BLOCK B, NEW WORLD CENTER, NO. 88 ZHUJIANG ROAD, NANJING 210008, CHINA  
电话(TEL.): (86)-25-68853600 传真(FAX): (86)-25-68853600-810  
WEB-SITE: WWW.HN-ELEC.COM  
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