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LM25115SDX PDF预览

LM25115SDX

更新时间: 2024-11-15 04:44:39
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器控制器
页数 文件大小 规格书
17页 725K
描述
Secondary Side Post Regulator Controller

LM25115SDX 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:LLP-16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.2模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:CURRENT/VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:30 V最小输入电压:4.5 V
标称输入电压:12 VJESD-30 代码:S-XDSO-N16
JESD-609代码:e0长度:5 mm
湿度敏感等级:1功能数量:1
端子数量:16最高工作温度:125 °C
最低工作温度:-40 °C最大输出电流:2.5 A
封装主体材料:UNSPECIFIED封装代码:HVSON
封装等效代码:SOLCC16,.2,20封装形状:SQUARE
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):260
电源:4.5/7 V认证状态:Not Qualified
座面最大高度:0.8 mm子类别:Power Management Circuits
表面贴装:YES切换器配置:PUSH-PULL
温度等级:AUTOMOTIVE端子面层:Tin/Lead (Sn/Pb)
端子形式:NO LEAD端子节距:0.5 mm
端子位置:DUAL处于峰值回流温度下的最长时间:40
宽度:5 mmBase Number Matches:1

LM25115SDX 数据手册

 浏览型号LM25115SDX的Datasheet PDF文件第2页浏览型号LM25115SDX的Datasheet PDF文件第3页浏览型号LM25115SDX的Datasheet PDF文件第4页浏览型号LM25115SDX的Datasheet PDF文件第5页浏览型号LM25115SDX的Datasheet PDF文件第6页浏览型号LM25115SDX的Datasheet PDF文件第7页 
November 2005  
LM25115  
Secondary Side Post Regulator Controller  
General Description  
Features  
n Self-synchronization to main channel output  
n Free-run mode for buck regulation of DC input  
n Leading edge pulse width modulation  
n Voltage-mode control with current injection and input line  
feed-forward  
The LM25115 controller contains all of the features neces-  
sary to implement multiple output power converters utilizing  
the Secondary Side Post Regulation (SSPR) technique. The  
SSPR technique develops a highly efficient and well regu-  
lated auxiliary output from the secondary side switching  
waveform of an isolated power converter. Regulation of the  
auxiliary output voltage is achieved by leading edge pulse  
width modulation (PWM) of the main channel duty cycle.  
Leading edge modulation is compatible with either current  
mode or voltage mode control of the main output. The  
LM25115 drives external high side and low side NMOS  
power switches configured as a synchronous buck regulator.  
A current sense amplifier provides overload protection and  
operates over a wide common mode input range. Additional  
features include a low dropout (LDO) bias regulator, error  
amplifier, precision reference, adaptive dead time control of  
the gate signals and thermal shutdown.  
n Operates from AC or DC input up to 42V  
n Wide 4.5V to 30V bias supply range  
n Wide 0.75V to 13.5V output range.  
n Top and bottom gate drivers sink 2.5A peak  
n Adaptive gate driver dead-time control  
n Wide bandwidth error amplifier (4MHz)  
n Programmable soft-start  
n Thermal shutdown protection  
n TSSOP-16 or thermally enhanced LLP-16 packages  
Typical Application Circuit  
20172601  
FIGURE 1. Simplified Multiple Output Power Converter Utilizing SSPR Technique  
© 2005 National Semiconductor Corporation  
DS201726  
www.national.com  

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