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LM5115SD PDF预览

LM5115SD

更新时间: 2024-11-15 22:34:19
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
17页 723K
描述
Secondary Side Post Regulator Controller

LM5115SD 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:5.17其他特性:ALSO HAS ADJUSTABLE OUTPUT VOLTAGE FROM 0.75V TO 13.5V; ALSO OPERATES IN CURRENT MODE
模拟集成电路 - 其他类型:SWITCHING CONTROLLER控制模式: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 V
JESD-30 代码:S-PDSO-N16JESD-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标称输出电压:7 V
封装主体材料:PLASTIC/EPOXY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
认证状态:Not Qualified座面最大高度:0.8 mm
子类别:Switching Regulator or Controllers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 mm
Base Number Matches:1

LM5115SD 数据手册

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PRELIMINARY  
March 2005  
LM5115  
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  
The LM5115 controller contains all of the features necessary  
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  
LM5115 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
Leading edge pulse width modulation  
n Voltage-mode control with current injection and input line  
feed-forward  
n Operates from AC or DC input up to 75V  
n
n
Wide 4.5V to 30V bias supply range  
Wide 0.75V to 12V output range.  
n Top and bottom gate drivers sink 2.5A peak  
n
n
n
Adaptive gate driver dead-time control  
Wide bandwidth error amplifier (4MHz)  
Programmable soft-start  
n Thermal shutdown protection  
n TSSOP-16 or thermally enhanced LLP-16 packages  
Typical Application Circuit  
20134901  
FIGURE 1. Simplified Multiple Output Power Converter Utilizing SSPR Technique  
© 2005 National Semiconductor Corporation  
DS201349  
www.national.com  

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