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LM3743MM-1000/NOPB PDF预览

LM3743MM-1000/NOPB

更新时间： 2024-09-19 01:11:35
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德州仪器 - TI 开关光电二极管输出元件
页数 文件大小 规格书
38页 1544K
描述
High-Performance Synchronous Buck Controller with Comprehensive Fault Protection Features

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LM3743MM-1000/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,
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.58
其他特性：OUTPUT VOLTAGE ADJUSTABLE DOWN TO 0.8V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：5.5 V最小输入电压：3 V
标称输入电压：3.3 VJESD-30 代码：S-PDSO-G10
JESD-609代码：e3长度：3 mm
湿度敏感等级：1功能数量：1
端子数量：10最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：10 A
最大输出电压：4.6 V最小输出电压：0.8 V
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装形状：SQUARE封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260座面最大高度：1.1 mm
表面贴装：YES切换器配置：BUCK
最大切换频率：1000 kHz温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：GULL WING
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：NOT SPECIFIED宽度：3 mm
Base Number Matches：1

LM3743MM-1000/NOPB 数据手册

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LM3743  
www.ti.com  
SNVS427E –SEPTEMBER 2006–REVISED APRIL 2013  
LM3743 High-Performance Synchronous Buck Controller with Comprehensive Fault  
Protection Features  
Check for Samples: LM3743  
1
FEATURES  
DESCRIPTION  
The LM3743 is a DC-DC voltage mode PWM buck  
controller featuring synchronous rectification at 300  
kHz or 1 MHz. It can deliver current as high as 20A  
and step down from an input voltage between 3V and  
5.5V down to a minimum output voltage of 0.8V, with  
a ±1.75% internal reference accuracy. The LM3743  
provides a set of comprehensive fault protection  
features such as high-side current limit, output under-  
voltage protection, and low-side current limit. When  
any of these fault protection features are engaged, it  
enters a hiccup protection mode which is suitable for  
high reliability systems such as rack mounted servers  
and telecom base station subsystems. The LM3743  
also employs a proprietary monolithic glitch free pre-  
bias start-up method suited for FPGA and ASIC logic  
devices. An external programmable soft-start allows  
for tracking and timing flexibility. The driver features  
1.6Ω of pull-up resistance and 1Ω of pull-down drive  
resistance for high power density and very efficient  
power processing.  
2
•
Input Voltage From 3.0V to 5.5V  
•
•
Output Voltage Adjustable Down to 0.8V  
Reference Accuracy: ±1.75%, over Full  
Temperature and Input Voltage Range  
•
•
High-Side and Low-Side N-Channel MOSFETs  
Switching Frequency Options of 1 MHz or 300  
kHz  
•
Comprehensive Fault Protection Features:  
–
–
–
High-Side Current Limit  
Low-Side Current Limit  
Output Under-Voltage Protection  
•
•
Hiccup Mode Protection Eliminates Thermal  
Runaway During Fault Conditions  
Externally Programmable Soft-Start with  
Tracking Capability  
•
•
Pre-Bias Start-Up Capability  
VSSOP-10 Package  
APPLICATIONS  
•
•
•
•
•
•
Rack-Mount Servers  
Telecom Base Stations  
Routers  
Printers/Scanners  
Multi-Media Set-Top Boxes  
FPGAs, ASICs, and DSPs  
Typical Application  
VIN  
D1  
R6  
C3  
BOOT  
C10  
+
+
C1  
C2  
VCC  
HGATE  
SW  
Q
Q
1
2
VOUT  
L1  
R1  
LM3743  
ILIM  
SS/TRACK  
COMP/EN  
LGATE  
GND  
FB  
+
C5  
C4  
R2  
R5  
C8  
C7  
C9  
R4  
R3  
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 © 2006–2013, Texas Instruments Incorporated  
 
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LM3743MM-1000/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM3743MMX-1000/NOPB TI

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