Renesas Electronics Corporation DC DC Switching Controllers ISL6420IAZ-TK

The ISL6420IAZ-TK is an advanced single synchronous buck pulse-width modulation (PWM) controller designed for high-performance DC/DC applications. It operates with an input voltage range of 4.5V to 16V and features a 0.6V internal reference voltage with ±1.0% accuracy. The device allows for resistor-selectable switching frequencies from 100kHz to 1.4MHz, making it suitable for various applications requiring flexibility in frequency management. This controller is capable of driving N-channel MOSFETs in a synchronous rectified buck topology and integrates control, output adjustment, monitoring, and protection functions into a single package. It supports voltage margining and external reference tracking modes, which are beneficial for applications such as DDR termination supplies and networking DC/DC converters. The ISL6420IAZ-TK also includes extensive circuit protection features, including power good (PGOOD) signals, overvoltage, and overcurrent protection. The device is packaged in a 20-lead QFN format, which enhances PCB efficiency due to its compact size. It is RoHS compliant and available in a Pb-free version, making it suitable for environmentally conscious designs. The ISL6420IAZ-TK is ideal for power supply applications in microprocessors, ASICs, Ethernet routers, and high-power DC/DC regulators.