ONSEMI CS51414EDR8G DC-DC Switching Buck Step Down Regulator, Adjustable, 4.5V-40V in, 1.5A out, 520kHz, SOIC-8

CS51414EDR8G is a 1.5A buck regulator IC in an 8 pin SOIC package. This device is fixed-frequency operating at 260KHz and 520KHz. The regulator uses the V2� control architecture to provide unmatched transient response, the best overall regulation and the simplest loop compensation for today�s high-speed logic. The product accommodates input voltages from 4.5V to 40V. CS51414 contain synchronization circuitry. The CS51414 has the option of powering the controller from an external 3.3 V to 6.0V 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 1.5A 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. CS51414 are functionally pin-compatible with the LT1376.

• 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
• 85µA quiescent current during power down
• Thermal shutdown