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The RT8125C/D 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 computers. Richtek Mach Response<sup>TM</sup> technology is specifically designed for providing 100ns "instant-on" response to load transients while maintaining a relatively constant switching frequency. The RT8125C/D 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 RT8125C/D provides an 1% high accuracy 0.8V reference voltage with minimum 1mA source/sink current for high accuracy output application.
RT8125C/RT8125D Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>Richtek Mach Response<sup>TM</sup> Technology </li><li>1% High Accuracy 0.8V Reference </li><li>VCC Input Range : 4.5V to 13.2V </li><li>VOUT Operating Range : 0.3V to 3.3V </li><li>Power Stage Input Range : 1.5V to 24V </li><li>Fixed Operating Frequency : 300kHz </li><li>VIN Detection </li><li>LG_OCSET for Current Limit </li><li>PGOOD Indicator </li><li>Embedded Bootstrap Switch </li><li>High Side Gate Driver Pull Low Resistor (10kΩ) </li><li>Current Limit with Low Side Current Sense Scheme </li><li>Enable Function with Internal Pull High Current </li><li>OVP/UVP/OTP/Pre-OVP/Current Limit </li><li>Shutdown Current <100µA </li><li>RoHS Compliant and Halogen Free </li></ul></div>
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<div class="spec-list"><ul class="lv1"><li>Generic DC/DC Power Regulator </li><li>Mother Boards and Desktop Servers </li></ul></div>
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