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LM25115AMTX/NOPB PDF预览

LM25115AMTX/NOPB

更新时间： 2024-11-16 01:14:51
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
26页 917K
描述
LM25115A Secondary Side Post Regulator/DC-DC Converter with Power-Up/Power-Down Tracking

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LM25115AMTX/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：TSSOP, TSSOP16,.25
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：5.66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：5 V标称输入电压：12 V
JESD-30 代码：R-PDSO-G16JESD-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
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：BUCK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

LM25115AMTX/NOPB 数据手册

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LM25115A  
www.ti.com  
SNVS501B –FEBRUARY 2007–REVISED APRIL 2013  
LM25115A Secondary Side Post Regulator/DC-DC Converter with Power-Up/Power-Down  
Tracking  
Check for Samples: LM25115A  
1
FEATURES  
DESCRIPTION  
The LM25115A controller contains all of the features  
necessary to produce multiple tracking outputs using  
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. LM25115A can be also used as a  
standalone DC/DC synchronous buck controller  
(Refer to Standalone DC/DC Synchronous Buck  
Mode section). 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 LM25115A drives external high-side and  
low-side NMOS power switches configured as a  
2
•
Power-up/Power-down Tracking  
•
•
•
•
•
•
•
•
•
•
•
•
•
Self-synchronization to Main Channel Output  
Leading Edge Pulse Width Modulation  
Valley Current Mode Control  
Standalone DC/DC Synchronous Buck Mode  
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  
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.  
TSSOP-16 package  
Typical Application Circuit  
Phase Signal  
Main  
Output  
3.3V  
FEEDBACK  
Main Converter  
PWM Controller  
INPUT  
SYNC  
VCC  
HB  
+12V  
LM25115A  
R
S
HO  
Auxiliary  
Output  
2.5V  
VBIAS  
RAMP  
TRK/SS  
CO  
Main  
3.3V  
HS  
LO  
CS  
COMP  
VOUT  
PGND AGND  
FB  
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 © 2007–2013, Texas Instruments Incorporated  
 
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LM25115AMTX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM25115AMT/NOPB TI

完全替代

 LM25115A Secondary Side Post Regulator/DC-DC Converter with Power-Up/Power-Down Tracking

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