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LM25576QMHX PDF预览

LM25576QMHX

更新时间: 2024-10-27 12:58:39
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器开关
页数 文件大小 规格书
24页 433K
描述
IC SWITCHING REGULATOR, 545 kHz SWITCHING FREQ-MAX, PDSO20, TSSOP-20, Switching Regulator or Controller

LM25576QMHX 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:TSSOP-20Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.21其他特性:ALSO HAS ADJUSTABLE OUTPUT VOLTAGE AS LOW AS 1.225V
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:42 V
最小输入电压:6 V标称输入电压:24 V
JESD-30 代码:R-PDSO-G20JESD-609代码:e0
长度:6.5 mm湿度敏感等级:1
功能数量:1端子数量:20
最高工作温度:125 °C最低工作温度:-40 °C
最大输出电流:3 A封装主体材料:PLASTIC/EPOXY
封装代码:HTSSOP封装等效代码:TSSOP20,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.1 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BUCK
最大切换频率:545 kHz温度等级:AUTOMOTIVE
端子面层:Tin/Lead (Sn85Pb15)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:4.4 mm
Base Number Matches:1

LM25576QMHX 数据手册

 浏览型号LM25576QMHX的Datasheet PDF文件第2页浏览型号LM25576QMHX的Datasheet PDF文件第3页浏览型号LM25576QMHX的Datasheet PDF文件第4页浏览型号LM25576QMHX的Datasheet PDF文件第5页浏览型号LM25576QMHX的Datasheet PDF文件第6页浏览型号LM25576QMHX的Datasheet PDF文件第7页 
March 2007  
LM25576  
SIMPLE SWITCHER® 42V, 3A Step-Down Switching  
Regulator  
General Description  
Features  
The LM25576 is an easy to use SIMPLE SWITCHER® buck  
regulator which allows design engineers to design and opti-  
mize a robust power supply using a minimum set of compo-  
nents. Operating with an input voltage range of 6 - 42V, the  
LM25576 delivers 3A of continuous output current with an in-  
tegrated 170mN-Channel MOSFET. The regulator utilizes  
an Emulated Current Mode architecture which provides in-  
herent line regulation, tight load transient response, and ease  
of loop compensation without the usual limitation of low-duty  
cycles associated with current mode regulators. The operat-  
ing frequency is adjustable from 50kHz to 1MHz to allow  
optimization of size and efficiency. To reduce EMI, a frequen-  
cy synchronization pin allows multiple IC’s from the  
LM(2)557x family to self-synchronize or to synchronize to an  
external clock. The LM25576 guarantees robustness with cy-  
cle-by-cycle current limit, short-circuit protection, thermal  
shut-down, and remote shut-down. The device is available in  
a power enhanced TSSOP-20 package featuring an exposed  
die attach pad for thermal dissipation. The LM25576 is sup-  
ported by the full suite of WEBENCH® On-Line design tools.  
Integrated 42V, 170mN-channel MOSFET  
Ultra-wide input voltage range from 6V to 42V  
Adjustable output voltage as low as 1.225V  
1.5% feedback reference accuracy  
Operating frequency adjustable between 50kHz and  
1MHz with single resistor  
Master or slave frequency synchronization  
Adjustable soft-start  
Emulated current mode control architecture  
Wide bandwidth error amplifier  
Built-in protection  
Package  
TSSOP-20EP (Exposed Pad)  
Simplified Application Schematic  
20208701  
WEBENCH® is a registered trademark of National Semiconductor Corporation.  
© 2007 National Semiconductor Corporation  
202087  
www.national.com  

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