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LM2655MTC-ADJ/NOPB PDF预览

LM2655MTC-ADJ/NOPB

更新时间： 2024-11-23 20:01:23
品牌 Logo 应用领域
美国国家半导体 - NSC 开关光电二极管
页数 文件大小 规格书
16页 759K
描述
IC SWITCHING REGULATOR, 345 kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16, Switching Regulator or Controller

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中文翻译

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LM2655MTC-ADJ/NOPB 技术参数

是否Rohs认证： 符合生命周期：Transferred
包装说明：TSSOP, TSSOP16,.25Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：7.55模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：14 V最小输入电压：4 V
标称输入电压：10 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最大输出电流：2.5 A
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
认证状态：Not Qualified座面最大高度：1.1 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BUCK最大切换频率：345 kHz
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：40
宽度：4.4 mmBase Number Matches：1

LM2655MTC-ADJ/NOPB 数据手册

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April 2005  
LM2655  
2.5A High Efficiency Synchronous Switching Regulator  
General Description  
Features  
n Ultra-high efficiency up to 96%  
The LM2655 is a current-mode controlled PWM step-down  
switching regulator. It has the unique ability to operate in  
synchronous or asynchronous mode. This gives the de-  
signer flexibility to choose between the high efficiency of  
synchronous operation, or the low solution cost of asynchro-  
nous operation. Along with flexibility, the LM2655 offers high  
power density with the small footprint of a TSSOP-16 pack-  
age.  
n 4V to 14V input voltage range  
n Internal high-side MOSFET with low RDS(ON) = 0.033Ω  
n 300 kHz fixed frequency internal oscillator  
n Low-side drive for synchronous operation  
n Guaranteed less than 12 µA shutdown current  
n Patented current sensing for current mode control  
n Programmable soft-start  
>
High efficiency ( 90%) is obtained through the use of an  
n Input undervoltage lockout  
internal low ON-resistance (33mΩ) MOSFET, and an exter-  
nal N-Channel MOSFET. This feature, together with its low  
quiescent current, makes the LM2655 an ideal fit in portable  
applications.  
n Output overvoltage shutdown protection  
n Output undervoltage shutdown protection  
n Thermal Shutdown  
n 16-pin TSSOP package  
Integrated in the LM2655 are all the power, control, and drive  
functions for asynchronous operation. In addition, a low-side  
driver output allows easy synchronous operation. The IC  
uses patented current sensing circuitry that eliminates the  
external current sensing resistor required by other current-  
mode DC-DC converters. A programmable soft-start feature  
limits start up current surges and provides a means of se-  
quencing multiple power supplies.  
Applications  
n Hard disk drives  
n Internet appliances  
n TFT monitors  
n Computer peripherals  
n Battery powered devices  
Typical Application  
10128429  
© 2005 National Semiconductor Corporation  
DS101284  
www.national.com  
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