Renesas Electronics Corporation DC DC Switching Controllers ISL8843AUZ

The ISL8843AUZ is a single-ended current mode PWM controller designed for various power conversion applications, including boost and flyback configurations. It operates at a maximum voltage of 30V and features a low start-up current of 90µA, with a maximum operating current of 125µA. The controller supports adjustable switching frequencies up to 2MHz and provides high peak current drive capability, achieving rise and fall times of 20ns with a 1nF output load. This device includes a 1A MOSFET gate driver, a fast transient response due to peak current mode control, and a propagation delay of 35ns from current sense to output. It also features a trimmed timing capacitor discharge current for precise deadtime and maximum duty cycle control, along with a ±3% current limit threshold. The ISL8843AUZ is compliant with RoHS standards and is available in an 8-lead MSOP package, making it suitable for applications in telecom, datacom, industrial power systems, and PC power supplies.