The ISL6800 and ISL68201 represent two controller versions – the ISL68200 has built in MOSFET drivers for pairing with external MOSFETs. The ISL68201 has a PWM output for driving DrMOS or driver plus MOSFET integrated power stages, such as Renesas' ISL99140 DrMOS power stage. Generally, the ISL68200 is a good fit for lower current, sub-25 A applications. The ISL68201 is a better fit for high current applications, where the power density of a DrMOS power stage outshines that of a discrete FET design. These controllers support a wide 4.5 V to 24 V input range, and include an integrated 5 V LDO for internal chip bias supply and MOSFET driver voltage. The controllers support a 0.5 V to 5.5 V output range, with a ±0.5% accurate reference, depending on the output voltage setting. The switching frequency is adjustable from 300 kHz to 1.5 MHz, allowing the user to optimize their design for efficiency, size or performance. The controllers support the full industrial temperature range of -40°C to 85°C. Built-in light load efficiency modes can be enabled to reduce power loss at light load currents, increasing overall supply efficiency. Renesas' proprietary R4 modulator provides industry leading transient performance while also being very easy to use. Full pinstrap programmability and the included PMBus interface add design flexibility without complication. Both controllers come in a space saving 4 mm x 4 mm QFN package.