SC2608A

Simple, Synchronous Voltage Mode PWM Controller POWER MANAGEMENT Description The SC2608A is a versatile voltage-mode PWM controller designed for use in step down DC/DC power supply applications. A simple, fixed frequency, highly efficient buck regulator can be implemented using the SC2608A with minimal external components. The input voltage range is from +5V to +12V. Internal level shift and drive circuitry eliminates the need for an expensive P-channel, high-side MOSFET. The small device footprint allows for compact circuit design. www.DataSheet4U.com SC2608A Features +5V or +12V input voltage 250kHz operation High efficiency (>90%) 1.5% Reference voltage accuracy Hiccup mode over current protection Robust output drive RDS(ON) Current sensing for protection Industrial temperature range SO-8 package Integrated boot strap diode Thermal Shut down Fully WEEE and RoHS Compliant ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ SC2608A features include temperature compensated ‹ voltage reference, triangle wave oscillator, current limit ‹ comparator, and an externally compensated error ampli- ‹ fier. Current limit is implemented by sensing the voltage drop across the bottom MOSFET RDS(ON). Applications ‹ ‹ ‹ ‹ ‹ Termination supplies Low cost microprocessor supplies Peripheral card supplies Industrial power supplies High density DC/DC conversion The SC2608A operates at a fixed frequency of 250kHz providing an optimum compromise between efficiency , external component size, and cost. SC2608A has a thermal prot...