Dual synchronous DC/DC regulator is AEC-Q100 qualified for automotive applications

October 21, 2011 // By Paul Buckley
Intersil Corporation has released a space-saving, AEC-Q100-qualified dual synchronous step-down DC/DC regulator featuring a 2.25 MHz switching frequency to minimize solution size.

The ISL78228 dual step-down DC/DC regulator provides two independent 800mA outputs. The device's 3 mm x 3 mm package and 2.25 MHz switching frequency enables small power solutions for a variety of space-constrained automotive and industrial applications. A 2.75 V to 5.5 V input voltage range permits powering from common 3.3 V or 5 V automotive module supply rails. Internal current-mode compensation provides fast transient response, allowing 100% duty cycle for low dropout and eliminates the need for external compensation components.

Each channel has an independent enable pin and output voltage programming down to 0.6 V. Built-in 2 ms digital soft-start minimizes inrush current, while the device’s low 30 uA quiescent current minimizes standby power consumption.

The ISL78228 is AEC-Q100 qualified and fully TS16949 compliant, and is specified for the full -40 to 105 degrees C operating temperature range.

More information about the ISL78228 step-down DC/DC regulator at
www.intersil.com/products/deviceinfo.asp?pn=ISL78228