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LM2647LQ/NOPB PDF预览

LM2647LQ/NOPB

更新时间： 2024-11-24 01:09:31
品牌 Logo 应用领域
德州仪器 - TI 开关输出元件
页数 文件大小 规格书
42页 3355K
描述
LM2647 Dual Synchronous Buck Regulator Controller

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LM2647LQ/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：HVBCC,
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：1.56其他特性：OUTPUT IS ADJUSTABLE DOWN TO 0.6V
模拟集成电路 - 其他类型：DUAL 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：4.5 V标称输入电压：5 V
JESD-30 代码：S-XBCC-B28JESD-609代码：e3
长度：5 mm湿度敏感等级：1
功能数量：1端子数量：28
最高工作温度：125 °C最低工作温度：-5 °C
最大输出电流：6 A最大输出电压：6 V
最小输出电压：0.6 V封装主体材料：UNSPECIFIED
封装代码：HVBCC封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
座面最大高度：0.8 mm表面贴装：YES
切换器配置：BUCK最大切换频率：500 kHz
温度等级：OTHER端子面层：Matte Tin (Sn)
端子形式：BUTT端子节距：0.5 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：5 mmBase Number Matches：1

LM2647LQ/NOPB 数据手册

 浏览型号LM2647LQ/NOPB的Datasheet PDF文件第2页浏览型号LM2647LQ/NOPB的Datasheet PDF文件第3页浏览型号LM2647LQ/NOPB的Datasheet PDF文件第4页浏览型号LM2647LQ/NOPB的Datasheet PDF文件第5页浏览型号LM2647LQ/NOPB的Datasheet PDF文件第6页浏览型号LM2647LQ/NOPB的Datasheet PDF文件第7页 
LM2647  
www.ti.com  
SNVS210F –JUNE 2003–REVISED APRIL 2013  
LM2647 Dual Synchronous Buck Regulator Controller  
Check for Samples: LM2647  
1
FEATURES  
DESCRIPTION  
The LM2647 is an adjustable 200-500kHz dual  
channel voltage-mode controlled high-speed  
2
•
•
Input Voltage Range from 5.5V to 28V  
Synchronous Dual-channel Interleaved  
Switching  
synchronous buck regulator controller ideally suited  
for battery powered applications such as laptop and  
notebook computers. The LM2647 requires only N-  
channel FETs for both the upper and lower positions  
of each synchronous stage. It features line  
feedforward to improve the response to input  
transients. At very light loads, the user can choose  
between the high-efficiency Pulse-skip mode or the  
constant frequency Forced-PWM mode. Lossless  
current limiting without the use of external sense  
resistors is made possible by sensing the voltage  
drop across the bottom FET. A unique adaptive duty  
cycle clamping technique is incorporated to  
significantly reduce peak currents under abnormal  
•
•
•
•
•
•
•
•
•
•
•
•
Forced-PWM or Pulse-skip Modes  
Lossless Bottom-side FET Current Sensing  
Adaptive Duty Cycle Clamping  
High Current N-channel FET Drivers  
Low Shutdown Supply Currents  
Reference Voltage Accurate to Within ±1.5%  
Output Voltage Adjustable down to 0.6V  
Power Good flag and Chip Enable  
Under-voltage Lockout  
Over-voltage/Under-voltage Protection  
Soft-start and Soft-shutdown  
load  
conditions.  
The  
two  
independently  
programmable outputs switch 180° out of phase  
(interleaved switching) to reduce the input capacitor  
and filter requirements. The input voltage range is  
5.5V to 28V while the output voltages are adjustable  
down to 0.6V.  
Switching Frequency Adjustable 200kHz-  
500kHz  
APPLICATIONS  
Standard supervisory and control features include  
Soft-start, Power Good, output Under-voltage and  
Over-voltage protection, Under-voltage Lockout, Soft-  
shutdown and Enable.  
•
•
Notebook Chipset Power Supplies  
Low Output Voltage High-Efficiency Buck  
Regulators  
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.  
2
All 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 © 2003–2013, Texas Instruments Incorporated  
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LM2647LQ/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM2647LQX/NOPB TI

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 Dual Synchronous Buck Regulator Controller 28-WQFN -5 to 125

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