Power-efficient integrated FET buck regulator extends battery life and saves space
( 01 Jan 2008 )
The ISL8009 from Intersil Corporation is a high-efficiency, 1.5A synchronous buck integrated FET regulator ideal for point-of-load regulation for datacom/telecom, battery powered systems, medical instrumentation and several industrial applications.
Designed to utilize a special multi-operation capability, allowing selection between forced PWM mode and automatic PWM/PFM mode, it has the ability to switch between modes enables the regulator to maintain up to 95% efficiency in both full load and light load conditions. Additionally, when the device is in PFM mode, the quiescent current drops to 17μA and makes the ISL8009 ideal for battery powered applications.
The ISL8009 includes features like high 1.6 kHz switching frequency, allowing the use of smaller external components. The device also has internal current mode compensation to eliminate the need for external components while contributing to fast transient response in over current conditions.
