ISL9443 Synchronous Step-Down PWM Controller

Added on April 23, 2012
The ISL9443 offers programmable soft-start and tracking functions for ease of supply rail sequencing and integrated UV/OV/OC/OT protections.

Related Resources

ISL9443 Datasheet ISL9443 Datasheet

isl9443.pdf (1.49 MB)
Nov 2017

ISL9444 Datasheet ISL9444 Datasheet

isl9444.pdf (1.42 MB)
Nov 2017


Video Transcript

Hello I am Pengju Kong I am now at APEC 2012 to demonstrate our Intersil product ISL9443 and ISL9444 synchronous buck controller with three outputs. This controller has unique features that do not need any external components for the compensation because it has internal compensation networks and they have a very strong driver to power 25 amp for each output.

You can see here is the ISL9443 evaluation board. It's very high power density evaluation board for three outputs. The ISL9444 evaluation board for three channels each channel can provide up to 25 amp at 5 volt output. The difference between these two IC is that the ISL9444 provides independent enable signal and independent power-good signal. The real application for these two ICs are satellite set-top boxes, IP gateways and the cable modems. For more information please visit Thank you.