SC1104A Datasheet | SEMTECH

POWER MANAGEMENT Description SC1104A/B Simple, Synchronous Voltage Mode PWM Controller Features The SC1104A/B is a versatile voltage-mode PWM controller designed for use in single ended DC/DC power supply applications. A simple, fixed frequency high efficiency buck regulator can be implemented using the SC1104A/B with a minimum of external ponents. Internal level shift and drive circuitry eliminates the need for an expensive P-channel, high-side switch. The small device footprint allows for pact circuit design. SC1104A/B Features include temperature pensated voltage reference, triangle wave oscillator, current limit parator and an externally pensated error amplifier. Current limit is implemented by sensing the voltage drop across the top FET’s RDS(ON). The SC1104 operates at fixed frequencies of 300k Hz(A) or 600k Hz(B) providing an optimum promise between efficiency, external ponent size, and cost. 600k Hz switching frequency is reserved for the SC1104B, +5VCC...