CS51411E ,1.5A, 260 kHz AND 520 kHz, LOW VOLTAGE BUCK REGULATORS WITH EXTERNAL BIAS OR SYNCHRONIZATION CAPABILITYELECTRICAL CHARACTERISTICS (continued) (–40°C < T < 125°C (CS51411E/2E/3E/4E); –40°C < T < 85°C (CS ..
CS51411ED8 ,1.5A, 260kHz Low Voltage Buck Regulators with External Bias or Synchronization CapabilityFeaturesPIN CONNECTIONS2• V Architecture Provides Ultrafast Transient Response, ImprovedRegulation ..
CS51411EDR8G , 1.5 A, 260 kHz and 520 kHz, Low Voltage Buck Regulators with External Bias or Synchronization Capability
CS51411GD8 ,1.5A, 260kHz Low Voltage Buck Regulators with External Bias or Synchronization Capability3CS51411DEMO/DTYPICAL PERFORMANCE CHARACTERISTICS3.290 3.3003.2893.2883.2953.2873.2863.285 3.2903.2 ..
CS51411GD8 ,1.5A, 260kHz Low Voltage Buck Regulators with External Bias or Synchronization CapabilityFeatures2The CS51411 demonstration board is a 1.0 A/3.3 V buck • V Control for Superior Line and Lo ..
CS51411GDR8 ,1.5A, 260kHz Low Voltage Buck Regulators with External Bias or Synchronization CapabilityELECTRICAL CHARACTERISTICS (continued) (−40°C < T < 125°C (CS51411E/2E/3E/4E); −40°C < T < 85°C (CS ..
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CS51411E-CS51413E
1.5A, 260 kHz AND 520 kHz, LOW VOLTAGE BUCK REGULATORS WITH EXTERNAL BIAS OR SYNCHRONIZATION CAPABILITY
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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 Ultra–Fast 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 µA Quiescent Current During Power–Down Thermal Shutdown Soft Start Pin–Compatible with LT1375 and LT1376
