The ISL6420BMAEP is an advanced single synchronous buck pulse-width modulation (PWM) controller from ISL company. It integrates control, output adjustment, monitoring and protection functions into a single package. This controller provides simple, single feedback loop, voltage mode control with fast transient response. The output voltage of the converter can be precisely regulated to as low as 0.6V, with a maximum tolerance of ±2.0% over temperature and line voltage variations. The operating frequency is fully adjustable from 100kHz to 1.4MHz. High frequency operation offers cost and space savings.
The ISL6420BMAEP simplifies the implementation of a complete control and protection scheme for high‑performance DC/DC buck converters. It drives N‑Channel MOSFETs in a synchronous rectified topology and integrates control, output adjustment, monitoring and protection functions in a single package, offering an external reference voltage tracking mode and voltage‑margining mode for testing.
The device is supplied in a 20‑lead QSOP (M20.15) package, operates from 4.5 V to 28 V, and provides an adjustable switching frequency from 100 kHz to 1.4 MHz. Typical applications include power supplies for microprocessors, ASICs, DDR SDRAM bus termination, and externally referenced buck converters.
| Operating frequency range | 100 kHz to 1.4 MHz |
|---|---|
| Output voltage regulation | as low as 0.6 V |
| Reference accuracy | ±2.0 % over line and temperature |
| Input voltage range | 4.5 V to 28 V |
| PWM duty cycle | 0 % to 100 % |
It operates from 4.5 V through 5.5 V and from 5.6 V up to 28 V.
The switching frequency is adjustable from 100 kHz to 1.4 MHz.
It provides overvoltage, overcurrent, shutdown, and PGOOD protection functions.