RT8125H Datasheet | Richtek

Description The RT8125H 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 RT8125H 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 RT8125H 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 - VIN Detection - LG_OCSET for Current Limit - PGOOD Indicator - Embedded Bootstrap Switch - High Side Gate Driver Pull Low Resistor (10kΩ) - Current Limit with Low Side Current Sense Scheme - Enable Function with Mode Selection - OVP/UVP/OTP/Pre-OVP/Current Limit - Shutdown Current <100μA - Ro HS pliant and Halogen Free Applications - Generic DC-DC Power Regulator - Mother Boards and Desktop Servers Simplified Application Circuit 0V to 5V PGOOD UGATE EN_MODE BOOT PGOOD PHASE REFOUT LGATE/ OCSET REFIN VOUT Copyright ©2020 Richtek Technology Corporation. All rights reserved. DS8125H-00 October 2020 is a registered trademark of Richtek Technology Corporation. .richtek. 1 Ordering Information Package Type QW : WDFN-10L 3x3 (W-Type) Lead Plating System G : Green (Halogen Free and Pb...