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LM2743MTCX

更新时间： 2024-11-25 12:48:31
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德州仪器 - TI 稳压器开关光电二极管信息通信管理控制器
页数 文件大小 规格书
37页 1390K
描述
LM2743 Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller

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LM2743MTCX 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：TSSOP
包装说明：TSSOP, TSSOP14,.25针数：14
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.16
其他特性：ADJUSTABLE OUTPUT VOLTAGE DOWN TO 0.6V, SEATED HGT-NOM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：6 V最小输入电压：3 V
标称输入电压：3.3 VJESD-30 代码：R-PDSO-G14
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：14最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP14,.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认证状态：Not Qualified
座面最大高度：1.2 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：1000 kHz技术：BICMOS
温度等级：AUTOMOTIVE端子面层：Tin/Lead (Sn/Pb)
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 mmBase Number Matches：1

LM2743MTCX 数据手册

 浏览型号LM2743MTCX的Datasheet PDF文件第2页浏览型号LM2743MTCX的Datasheet PDF文件第3页浏览型号LM2743MTCX的Datasheet PDF文件第4页浏览型号LM2743MTCX的Datasheet PDF文件第5页浏览型号LM2743MTCX的Datasheet PDF文件第6页浏览型号LM2743MTCX的Datasheet PDF文件第7页 
LM2743  
www.ti.com  
SNVS276G –APRIL 2004–REVISED MARCH 2013  
LM2743 Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller  
Check for Samples: LM2743  
1
FEATURES  
DESCRIPTION  
The LM2743 is a high-speed synchronous buck  
regulator controller with an accurate feedback voltage  
accuracy of ±2%. It can provide simple down  
conversion to output voltages as low as 0.6V. Though  
the control sections of the IC are rated for 3 to 6V,  
the driver sections are designed to accept input  
supply rails as high as 16V. The use of adaptive non-  
overlapping MOSFET gate drivers helps avoid  
potential shoot-through problems while maintaining  
high efficiency. The IC is designed for the more cost-  
effective option of driving only N-channel MOSFETs  
in both the high-side and low-side positions. It senses  
the low-side switch voltage drop for providing a  
simple, adjustable current limit.  
2
•
Power Stage Input Voltage from 1V to 16V  
Control Stage Input Voltage from 3V to 6V  
Output Voltage Adjustable down to 0.6V  
Power Good Flag and Shutdown  
•
•
•
•
Output Over-Voltage and Under-Voltage  
Detection  
•
±2% Feedback Voltage Accuracy Over  
Temperature  
•
•
•
Low-Side Adjustable Current Sensing  
Adjustable Soft-Start  
Tracking and Sequencing with Shutdown and  
Soft-Start Pins  
The fixed-frequency voltage-mode PWM control  
architecture is adjustable from 50 kHz to 1 MHz with  
one external resistor. This wide range of switching  
frequency gives the power supply designer the  
flexibility to make better tradeoffs between  
component size, cost and efficiency.  
•
•
Switching Frequency from 50 kHz to 1 MHz  
TSSOP-14 Package  
APPLICATIONS  
•
•
•
•
•
3.3V Buck Regulation  
Features include soft-start, input under-voltage  
lockout (UVLO) and Power Good (based on both  
under-voltage and over-voltage detection). In  
addition, the shutdown pin of the IC can be used for  
providing startup delay, and the soft-start pin can be  
used for implementing precise tracking, for the  
purpose of sequencing with respect to an external  
rail.  
Cable Modem, DSL and ADSL  
Laser Jet and Ink Jet Printers  
Low Voltage Power Modules  
DSP, ASIC, Core and I/O  
Typical Application  
V
= 3.3V  
V
= 3.3V  
IN  
CC  
D
1
C
BOOT  
R
PULL-UP  
Q1  
+
C
IN  
1,2  
R
CC  
V
HG  
CC  
SD  
BOOT  
R
CS  
C
L1  
CC  
V
OUT  
= 1.2V@4A  
I
PWGD  
FREQ  
SS/TRACK  
SGND  
EAO  
SEN  
LM2743  
LG  
PGND  
PGND  
FB  
R
FADJ  
+
R
FB2  
C 1,2  
O
C
SS  
R
C2  
C
C3  
R
FB1  
C
C1  
C
C2  
R
C1  
Figure 1. Typical Application Circuit  
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 © 2004–2013, Texas Instruments Incorporated  
 
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LM2743MTCX 替代型号

型号 品牌 替代类型 描述 数据表
LM2743MTCX/NOPB TI

类似代替

 LM2743 Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
LM2743MTC/NOPB TI

类似代替

 LM2743 Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
LM2743MTC TI

类似代替

 LM2743 Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller

与LM2743MTCX相关器件

型号 品牌 获取价格 描述 数据表
LM2743MTCX/NOPB NSC

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 		IC SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO14, ROHS COMPLIANT, PLASTIC, TSS
LM2743MTCX/NOPB TI

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 		LM2743 Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
LM2744 NSC

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 		Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller with External Reference
LM2744MTC TI

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 		SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, TSSOP-14
LM2744MTC/NOPB TI

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 		1-16V, Voltage Mode Synchronous Buck Controller with External Reference 14-TSSOP -40 to 12
LM2744MTCX TI

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 		SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, TSSOP-14
LM2744MTCX NSC

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 		IC SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, TSSOP-14, Switching
LM2744MTCX/NOPB NSC

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 		IC SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, TSSOP-14, Switching
LM2744MTCX/NOPB TI

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 		1-16V, Voltage Mode Synchronous Buck Controller with External Reference 14-TSSOP -40 to 12
LM2745 NSC

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 		Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization

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