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LM25576MH PDF预览

LM25576MH

更新时间: 2024-10-27 04:44:39
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管输出元件
页数 文件大小 规格书
24页 427K
描述
42V, 3A Step-Down Switching Regulator

LM25576MH 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:5.17Is Samacsys:N
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 VJESD-30 代码:R-PDSO-G20
JESD-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 (Sn/Pb)
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 mmBase Number Matches:1

LM25576MH 数据手册

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January 2007  
LM25576  
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  

LM25576MH 替代型号

型号 品牌 替代类型 描述 数据表
LM25576MHX TI

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LM25576/LM25576-Q1 SIMPLE SWITCHER 42V, 3A Step-Down Switching Regulator
LM25576MHX NSC

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42V、3A 降压开关稳压器