SC2463

High Performance Quad Output www.DataSheet4U.com Switching Regulator POWER MANAGEMENT Description The SC2463 is a high performance controller for multioutput converters that can be configured for a wide variety of applications. The SC2463 utilizes PWM synchronous buck topologies where efficiency is most important. It also provides two dedicated programmable positive linear regulators using external transistors. Each of the four outputs is adjustable down to 0.5V. The two PWM switchers are synchronized 180° out of phase reducing input ripple, allowing for fewer input capacitors. Power up sequencing prevents converter latch-up. The SC2463 can be synchronized to other converters to prevent beat frequencies. The wide range programmable operating frequency allows users to optimize a converter design. The PWM switchers sense the voltage across the low-side MOSFETs on-resistance to efficiently provide adjustable current-limit, eliminating costly current-sense resistors. A POK signal is issued when soft-start is complete on both PWM switchers and their outputs are within 10% of the set point. SC2463 Features ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ Two synchronized converters for low noise Power up sequencing to prevent latch-up Out of phase operation for low input ripple Over current protection Wide input range, 4.5 to 30V Programmable frequency up to 700kHz Low shutdown current 100uA Two synchronous bucks for high efficiency at high current ‹ Two programmable positive linear regulators ‹ Output voltage a...