Renesas Electronics Corporation Integrated Circuits (ICs) - Power Management (PMIC) - Special Purpose Regulators ISL6530CBZ

The ISL6530CBZ is a dual synchronous buck pulse-width modulator (PWM) controller designed specifically for DDRAM memory applications. It efficiently generates the necessary voltages, including a regulated 2.5V VDDQ for powering DDRAM memory, a VREF output at half the memory power supply with a tolerance of ±1%, and a VTT output that tracks VREF. The device operates from a +5V input and features a simple voltage-mode control with fast transient response, supporting a full duty cycle range from 0% to 100%. This controller integrates all necessary control, output adjustment, monitoring, and protection functions into a single package, which simplifies design and reduces component count. It includes over-current protection that utilizes the rDS(ON) of the upper MOSFET, eliminating the need for additional current sensing resistors. The ISL6530CBZ is available in a 24-lead SOIC package and is RoHS compliant, making it suitable for a variety of applications in high-performance computing and graphics systems.