onsemi | CS51414EDR8G

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.

Key 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 µA Quiescent Current During Power-Down
• Thermal Shutdown
• Soft-Start
• Pin-Compatible with LT1375 and LT1376
• Pb-Free Packages are Available

Benefits:

• Reduced output capacitance
• Accurate Output Voltage
• Reduces Short Circuit PowerDissipation
• Maximized Efficiency
• Parallel Supply Operation or Noise Minimization
• Increased system flexibility
• Low power dissipation in stand-by mode
• Circuit Protection
• Increased system flexibility
• Easy drop in replacement

Applications:  

• Distributed Power

End Products:

• Battery Charger 

To learn more about the CS5141x product family, Click Here