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CS51411 Fiches technique(PDF) 1 Page - ON Semiconductor

No de pièce CS51411
Description  1.5 A, 260 kHz and 520 kHz, Low Voltage Buck Regulators with External Bias or Synchronization Capability
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Fabricant  ONSEMI [ON Semiconductor]
Site Internet  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CS51411 Fiches technique(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2007
February, 2007 − Rev. 17
1
Publication Order Number:
CS51411/D
CS51411, CS51412,
CS51413, CS51414
1.5 A, 260 kHz and 520 kHz,
Low Voltage Buck
Regulators with External
Bias or Synchronization
Capability
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 V2
™ control architecture to provide unmatched transient
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.
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.
Features
V2 Architecture Provides Ultrafast Transient Response, Improved
Regulation and Simplified Design
2.0% Error Amp Reference Voltage Tolerance
Switch Frequency Decrease of 4:1 in Short Circuit Conditions
Reduces Short Circuit Power Dissipation
BOOST Lead Allows “Bootstrapped” Operation to Maximize
Efficiency
Sync Function for Parallel Supply Operation or Noise Minimization
Shutdown Lead Provides Power−Down Option
85 mA Quiescent Current During Power−Down
Thermal Shutdown
Soft−Start
Pin−Compatible with LT1375 and LT1376
Pb−Free Packages are Available
5141x = Device Code
x = 1, 2, 3 or 4
A
= Assembly Location
L, WL
= Wafer Lot
Y, YY
= Year
W, WW = Work Week
y = E or G
G
= Pb−Free Package
SOIC−8
D SUFFIX
CASE 751
1
8
MARKING DIAGRAMS
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
http://onsemi.com
5141x
ALYWy
G
1
8
1
18
18−LEAD DFN
MN SUFFIX
CASE 505
CS5141xy
AWLYYWW
G
G
118


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