RT8125P Datasheet | Richtek

High Efficiency Single Synchronous Buck PWM Controller General Description The RT8125P PWM controller provides high efficiency, excellent transient response, and high DC output accuracy needed for CPU core, I/O, and chipset RAM supplies in notebook puters. Richtek Mach Response TM technology is specifically designed for providing 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The RT8125P achieves high efficiency at a reduced cost by eliminating the current sense resistor found in traditional current mode PWMs. Efficiency is further enhanced by its ability to drive very large synchronous rectifier MOSFETs. The Buck conversion allows this device to directly step down high voltage batteries at the highest possible efficiency. The RT8125P provides an 1% high accuracy 0.8V reference voltage with minimum 1m A source/sink current for high accuracy output application. Features - Richtek Mach Response TM Technology - 1% High Accuracy 0.8V Reference - VCC Input Range: 4.5V to 13.2V - VOUT Operating Range: 0.3V to 3.3V - Power Stage Input Range: 1.5V to 24V - Fixed Operating Frequency: 300k Hz - LG_OCSET for Current Limit - PGOOD Indicator - Embedded Bootstrap Switch - High-side Gate Driver Pull Low Resistor (10k) - Current Limit with Low-side Current Sense Scheme - Enable Function with Internal Pull High Current - OVP/UVP/OTP/Pre-OVP/Current Limit - Shutdown Current  100A Applications - Generic DC-DC Power Regulator - Mother Boards and Desktop Servers Simplified Application Circuit 0V to 5V PGOOD VCC RT8125P UGATE EN_MODE BOOT PGOOD...