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LM26400YMHX/NOPB PDF预览

LM26400YMHX/NOPB

更新时间： 2024-11-24 02:58:43
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德州仪器 - TI /
页数 文件大小 规格书
33页 4735K
描述
LM26400Y Dual 2-A, 500-kHz Wide Input Range Buck Regulator

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LM26400YMHX/NOPB 数据手册

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LM26400Y  
SNVS457D –FEBRUARY 2007–REVISED OCTOBER 2015  
LM26400Y Dual 2-A, 500-kHz Wide Input Range Buck Regulator  
1 Features  
3 Description  
The LM26400Y device is a monolithic, two-output  
fixed-frequency PWM step-down DC-DC regulator, in  
a 16-pin WSON or thermally-enhanced HTSSOP  
1
•
•
•
•
•
•
•
•
•
•
•
•
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Input Voltage Range of 3 V to 20 V  
Dual 2-A Output  
Output Voltage Down to 0.6 V  
Internal Compensation  
package. With  
a minimum number of external  
components and internal loop compensation, the  
LM26400Y is easy to use.  
500-kHz PWM Frequency  
Separate Enable Pins  
The ability to drive 2-A loads with an internal 175-mΩ  
NMOS switch using state-of-the-art 0.5-µm BiCMOS  
technology results in a high-power density design.  
The world class control circuitry allows for an ON-  
time as low as 40 ns, thus supporting high-frequency  
conversion over the entire input range of 3 V to 20 V  
and down to an output voltage of only 0.6 V. The  
LM26400Y utilizes peak current-mode control and  
internal compensation to provide high-performance  
regulation over a wide range of line and load  
conditions. Switching frequency is internally set to  
500 kHz, optimal for a broad range of applications in  
terms of size versus thermal tradeoffs.  
Separate Soft-Start Pins  
Frequency Foldback Protection  
175-mΩ NMOS Switch  
Integrated Bootstrap Diodes  
Overcurrent Protection  
HTSSOP and WSON Packages  
Thermal Shutdown  
2 Applications  
•
•
•
•
•
•
•
DTV-LCD  
Given a nonsynchronous architecture, efficiencies  
above 90% are easy to achieve. External shutdown is  
included, enabling separate turnon and turnoff of the  
Set-Top Boxes  
XDSL  
two  
channels.  
Additional  
features  
include  
Automotive  
programmable soft-start circuitry to reduce inrush  
current, pulse-by-pulse current limit and frequency  
foldback, integrated bootstrap structure, and thermal  
shutdown.  
Computing Peripherals  
Industrial Controls  
Points-of-Load  
Device Information(1)  
PART NUMBER  
PACKAGE  
WSON (16)  
HTSSOP (16)  
BODY SIZE (NOM)  
5.00 mm × 5.00 mm  
4.40 mm × 5.00 mm  
LM26400Y  
(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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LM26400YMHX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM26400YMH/NOPB TI

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 LM26400Y Dual 2-A, 500-kHz Wide Input Range Buck Regulator

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