The ML4803 from Micro Linear Corp. (San Jose, CA) is claimed to be the industry's smallest power supply chip to combine both power factor correction and pulse width modulation. According to Micro Linear, the ML4803 uses a multi-patented new architecture that reduces the cost of power supplies by cutting the pin count in half while also eliminating six external components.
The device is housed in an 8-pin SOIC and is intended for use in power supplies for a wide range of products, including PCs, workstations, peripheral equipment and servers.
The ML4803 is priced at $1.52 for an 8-pin SOIC package in quantities of 1,000. The device is also available in an 8-pin plastic DIP for $1.51 in quantities of 1,000.