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LM2677SX-5.0/NOPB

更新时间： 2024-11-16 12:05:51
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德州仪器 - TI 稳压器
页数 文件大小 规格书
34页 1462K
描述
LM2677 SIMPLE SWITCHER® High Efficiency 5A Step-Down Voltage Regulator

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LM2677SX-5.0/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：TO-263,
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.46
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：40 V
最小输入电压：8 V标称输入电压：12 V
JESD-30 代码：R-PSSO-G7JESD-609代码：e3
长度：10.16 mm湿度敏感等级：3
功能数量：1端子数量：7
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：8.75 A最大输出电压：37 V
最小输出电压：1.23 V标称输出电压：5 V
封装主体材料：PLASTIC/EPOXY封装代码：TO-263
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：245座面最大高度：4.79 mm
表面贴装：YES切换器配置：BUCK
最大切换频率：260 kHz温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.27 mm端子位置：SINGLE
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：8.64 mm
Base Number Matches：1

LM2677SX-5.0/NOPB 数据手册

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LM2677  
www.ti.com  
SNVS077I –MAY 2004–REVISED JUNE 2012  
LM2677 SIMPLE SWITCHER® High Efficiency 5A Step-Down Voltage Regulator with Sync  
Check for Samples: LM2677  
1
FEATURES  
DESCRIPTION  
The LM2677 series of regulators are monolithic  
integrated circuits which provide all of the active  
functions for a step-down (buck) switching regulator  
capable of driving up to 5A loads with excellent line  
and load regulation characteristics. High efficiency  
(>90%) is obtained through the use of a low ON-  
resistance DMOS power switch. The series consists  
of fixed output voltages of 3.3V, 5V and 12V and an  
adjustable output version.  
23  
•
Efficiency up to 92%  
•
Simple and Easy to Design with (Using Off-the-  
shelf External Components)  
•
•
100 mΩ DMOS Output Switch  
3.3V, 5V and 12V Fixed Output and Adjustable  
(1.2V to 37V ) Versions  
•
•
50μA Standby Current when Switched OFF  
±2%maximum Output Tolerance Over Full Line  
and Load Conditions  
The SIMPLE SWITCHER™ concept provides for a  
complete design using a minimum number of external  
components. The switching clock frequency can be  
provided by an internal fixed frequency oscillator  
(260KHz) or from an externally provided clock in the  
range of 280KHz to 400Khz which allows the use of  
physically smaller sized components. A family of  
standard inductors for use with the LM2677 are  
available from several manufacturers to greatly  
simplify the design process. The external Sync clock  
provides direct and precise control of the output ripple  
frequency for consistent filtering or frequency  
spectrum positioning.  
•
•
Wide Input Voltage Range: 8V to 40V  
External Sync Clock Capability (280KHz to  
400KHz)  
•
•
260 KHz Fixed Frequency Internal Oscillator  
−40 to +125°C Operating Junction Temperature  
Range  
APPLICATIONS  
•
Simple to Design, High Efficiency (>90%) Step-  
down Switching Regulators  
The LM2677 series also has built in thermal  
shutdown, current limiting and an ON/OFF control  
input that can power down the regulator to a low  
50μA quiescent current standby condition. The output  
voltage is ensured to a ±2% tolerance.  
•
Efficient System Pre-regulator for Linear  
Voltage Regulators  
•
•
Battery Chargers  
Communications and Radio Equipment  
Regulator with Synchronized Clock Frequency  
Typical Application  
Feedback  
0.01 mF  
Input  
Voltage  
8V to 40V  
V
IN  
Boost  
LM2677 - 5.0  
L
22 mH  
Output  
Voltage  
5V/5A  
0.47 mF  
+
+
+
Switch  
Ground Output  
3 x 15 mF/50V  
1 kW  
2 x 180 mF, 16V  
6TQ045S  
Optional External  
Sync Clock  
100 pF  
(280 kHz to 400 kHz)  
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.  
SIMPLE SWITCHER is a trademark of Texas Instruments.  
2
3
All other trademarks are the property of their respective owners.  
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 © 2004–2012, Texas Instruments Incorporated  
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中文翻译

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LM2677SX-5.0/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM2677SX-5.0 TI

完全替代

 LM2677 SIMPLE SWITCHER® High Efficiency 5A S
LM2677S-5.0/NOPB TI

完全替代

 LM2677 SIMPLE SWITCHER® High Efficiency 5A S

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