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CS51411_12 Datasheet, PDF (1/20 Pages) ON Semiconductor – 1.5 A, 260 kHz and 520 kHz Low Voltage Buck Regulators with External Bias or Synchronization Capability | |||
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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 fixedâfrequency 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 todayâs highâspeed 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 onâchip NPN transistor is capable of providing a minimum of
1.5 A of output current, and is biased by an external âboostâ capacitor
to ensure saturation, thus minimizing onâchip power dissipation.
Protection circuitry includes thermal shutdown, cycleâbyâcycle
current limiting and frequency foldback. The CS51411 and CS51413
are functionally pinâcompatible with the LT1375. The CS51412 and
CS51414 are functionally pinâcompatible 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 Pin Allows âBootstrappedâ Operation to Maximize
Efficiency
⢠Sync Function for Parallel Supply Operation or Noise Minimization
⢠Shutdown Lead Provides PowerâDown Option
⢠85 mA Quiescent Current During PowerâDown
⢠Thermal Shutdown
⢠SoftâStart
⢠PinâCompatible with LT1375 and LT1376
⢠PbâFree Packages are Available
http://onsemi.com
MARKING DIAGRAMS
8
1
SOICâ8
D SUFFIX
CASE 751
8
5141x
ALYWy
G
1
18
1
18âLEAD DFN
MN SUFFIX
CASE 505
1
18
CS5141xy
AWLYYWW G
G
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
= PbâFree Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
© Semiconductor Components Industries, LLC, 2012
1
November, 2012 â Rev. 20
Publication Order Number:
CS51411/D
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