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LM2651MTC-ADJ/NOPB PDF预览

LM2651MTC-ADJ/NOPB

更新时间： 2024-11-03 11:11:43
品牌 Logo 应用领域
德州仪器 - TI 开关光电二极管稳压器
页数 文件大小 规格书
26页 573K
描述
1.5A 高效开关稳压器 | PW | 16 | -40 to 125

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LM2651MTC-ADJ/NOPB 数据手册

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LM2651  
SNVS032E –FEBRUARY 2000–REVISED JANUARY 2016  
LM2651 1.5 A High-Efficiency Synchronous Switching Regulator  
1 Features  
3 Description  
The LM2651 switching regulator provides high-  
efficiency power conversion over a 100:1 load range  
(1.5 A to 15 mA). This feature makes the LM2651 an  
ideal fit in battery-powered applications that demand  
long battery life in both run and standby modes.  
1
•
•
Ultrahigh Efficiency up to 97%  
High-Efficiency Over a 1.5-A to 1.5-mA Load  
Range  
•
•
•
4-V to 14-V Input Voltage Range  
1.8-V, 2.5-V, 3.3-V, or ADJ Output Voltage  
Synchronous rectification is used to achieve up to  
97% efficiency. At light loads, the LM2651 enters a  
low power hysteretic or sleep mode to maintain high  
efficiency. In many applications, the efficiency still  
exceeds 80% at 15-mA load. A shutdown pin is  
available to disable the LM2651 and reduce the  
supply current to less than 10 µA.  
Internal MOSFET Switch With Low RDS(on) of  
75 mΩ  
•
•
•
300-kHz Fixed Frequency Internal Oscillator  
7-µA Shutdown Current  
Patented Current Sensing for Current Mode  
Control  
The LM2651 contains a patented current sensing  
circuitry for current mode control. This feature  
eliminates the external current sensing resistor  
required by other current-mode DC-DC converters.  
•
•
•
•
Input Undervoltage Lockout  
Adjustable Soft-Start  
Current Limit and Thermal Shutdown  
16-Pin TSSOP Package  
The LM2651 has a 300-kHz fixed frequency internal  
oscillator. The high oscillator frequency allows the  
use of extremely small, low-profile components.  
2 Applications  
A
programmable soft-start feature limits current  
•
•
•
•
•
Personal Digital Assistants (PDAs)  
Computer Peripherals  
surges from the input power supply at start-up and  
provides a simple means of sequencing multiple  
power supplies.  
Battery-Powered Devices  
Handheld Scanners  
Other protection features include input undervoltage  
lockout, current limiting, and thermal shutdown.  
High-Efficiency 5-V Conversion  
Device Information(1)  
PART NUMBER  
LM2651  
PACKAGE  
BODY SIZE (NOM)  
TSSOP (16)  
5.00 mm × 4.40 mm  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
Typical Application  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 
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LM2651MTC-ADJ/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM2651MTC-ADJ TI

完全替代

 1.5A 高效开关稳压器 | PW | 16 | -40 to 125
LM2651MTCX-ADJ/NOPB TI

类似代替

 1.5A 高效开关稳压器 | PW | 16 | -40 to 125
LM2651MTCX-ADJ TI

类似代替

 2.6A SWITCHING REGULATOR, 345kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16

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 		1.5A 高效开关稳压器 | PW | 16 | -40 to 125
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