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CS51414G

更新时间： 2024-11-29 21:54:35
品牌 Logo 应用领域
安森美 - ONSEMI 稳压器
页数 文件大小 规格书
16页 490K
描述
1.5A, 260 kHz AND 520 kHz, LOW VOLTAGE BUCK REGULATORS WITH EXTERNAL BIAS OR SYNCHRONIZATION CAPABILITY

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CS51414G 数据手册

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http://onsemi.com  
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SO–8  
The CS5141X products are 1.5 A buck regulator ICs. These devices  
are fixed–frequency operating at 260 kHz and 520 kHz. The regulators  
use the V control architecture to provide unmatched transient  
D SUFFIX  
CASE 751  
8
1
2
response, the best overall regulation and the simplest loop  
compensation for today’s high–speed logic. These products  
accommodate input voltages from 4.5 V to 40 V.  
MARKING DIAGRAM  
8
The CS51411 and CS51413 contain synchronization circuitry. The  
CS51412 and CS51414 have the option of powering the controller  
from an external 3.3 V to 6.0 V supply in order to improve efficiency,  
especially in high input voltage, light load conditions.  
The on–chip NPN transistor is capable of providing a minimum of  
1.5 A of output current, and is biased by an external “boost” capacitor  
to ensure saturation, thus minimizing on–chip power dissipation.  
Protection circuitry includes thermal shutdown, cycle–by–cycle  
current limiting and frequency foldback. The CS51411 and CS51413  
are functionally pin–compatible with the LT1375. The CS51412 and  
CS51414 are functionally pin–compatible with the LT1376.  
5141X  
ALYWT  
1
X
A
WL, L  
YY, Y  
= 1, 2, 3 or 4  
= Assembly Location  
= Wafer Lot  
= Year  
WW, W = Work Week  
= Temperature Range, E or G  
T
Features  
PIN CONNECTIONS  
CS51411/3  
2
• V Architecture Provides Ultra–Fast Transient Response, Improved  
Regulation and Simplified Design  
1
8
• 2.0% Error Amp Reference Voltage Tolerance  
BOOST  
V
V
C
• Switch Frequency Decrease of 4:1 in Short Circuit Conditions  
V
IN  
FB  
Reduces Short Circuit Power Dissipation  
V
SW  
GND  
• BOOST Lead Allows “Bootstrapped” Operation to Maximize  
Efficiency  
• Sync Function for Parallel Supply Operation or Noise Minimization  
• Shutdown Lead Provides Power–Down Option  
• 85 µA Quiescent Current During Power–Down  
• Thermal Shutdown  
• Soft Start  
• Pin–Compatible with LT1375 and LT1376  
SHDNB  
SYNC  
CS51412/4  
1
8
BOOST  
V
V
C
V
IN  
FB  
V
SW  
GND  
BIAS  
SHDNB  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 14 of this data sheet.  
Semiconductor Components Industries, LLC, 2002  
1
Publication Order Number:  
September, 2002 – Rev. 11  
CS51411/D  
1234567...16

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