CS51412 Datasheet

1.5 A, 260 kHz and 520 kHz, Low Voltage Buck Regulators with External Bias or Synchronization Capability


The CS51412 products is 1.5 A buck regulator ICs. These devices are fixed−frequency operating at 260 kHz and 520 kHz. The regulators use the V 2™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. CS51412 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 “Bootstrapped” Operation to Maximize Efficiency•Sync Function for Parallel Supply Operation or Noise Minimization•Shutdown Lead Provides Power−Down Option•85 A Quiescent Current During Power−Down•Thermal Shutdown•Soft−Start•Pin−Compatible with LT1375 and LT1376•These Devices are Pb−Free and are RoHS Compliant


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