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LM25115MT/NOPB PDF预览

LM25115MT/NOPB

更新时间： 2024-11-16 01:09:35
品牌 Logo 应用领域
德州仪器 - TI 开关光电二极管
页数 文件大小 规格书
23页 951K
描述
LM25115 Secondary Side Post Regulator Controller

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LM25115MT/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：TSSOP
包装说明：TSSOP, TSSOP16,.25针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.54
其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 0.75 TO 13.5V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：R-PDSO-G16
JESD-609代码：e3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最大输出电压：13.5 V
最小输出电压：0.75 V标称输出电压：7 V
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装等效代码：TSSOP16,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH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：1 mm子类别：Power Management Circuits
标称供电电压 (Vsup)：12 V表面贴装：YES
切换器配置：PUSH-PULL温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)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：NOT SPECIFIED宽度：4.4 mm
Base Number Matches：1

LM25115MT/NOPB 数据手册

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LM25115  
www.ti.com  
SNVS418A –NOVEMBER 2005–REVISED APRIL 2013  
LM25115 Secondary Side Post Regulator Controller  
Check for Samples: LM25115  
1
FEATURES  
DESCRIPTION  
The LM25115 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 regulated 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.  
2
•
•
Self-synchronization to Main Channel Output  
Free-run Mode for Buck Regulation of DC  
Input  
•
•
Leading Edge Pulse Width Modulation  
Voltage-mode Control with Current Injection  
and Input Line Feed-forward  
•
•
•
•
•
•
•
•
•
Operates from AC or DC Input up to 42V  
Wide 4.5V to 30V Bias Supply Range  
Wide 0.75V to 13.5V Output Range.  
Top and Bottom Gate Drivers Sink 2.5A Peak  
Adaptive Gate Driver Dead-time Control  
Wide Bandwidth Error Amplifier (4MHz)  
Programmable Soft-start  
Thermal Shutdown Protection  
TSSOP-16 or Thermally Enhanced WSON-16  
Packages  
Typical Application Circuit  
Phase Signal  
Main  
Output  
3.3V  
FEEDBACK  
INPUT  
Main Converter  
PWM Controller  
Sync  
HB  
HO  
HS  
V
CC  
+12V  
R
S
Auxiliary  
Output  
2.0V  
V
BIAS  
RAMP  
SS  
LO  
CO  
COMP  
FB  
CS  
V
OUT  
PGND AGND  
Figure 1. Simplified Multiple Output Power Converter Utilizing SSPR Technique  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2005–2013, Texas Instruments Incorporated  
 
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LM25115MT/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM25115MTX/NOPB TI

类似代替

 42V, Secondary Side Post Regulator/Synchronous Buck Controller 16-TSSOP -40 to 125
LM25115MT TI

类似代替

 2.5A SWITCHING CONTROLLER, PDSO16, TSSOP-16

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