Intersil Corporation, a provider of high-performance analog semiconductors, announced that it has launched a new buck pulse width modulation (PWM) regulator, ISL8500.

 

Intersil said that the new PWM regulator offers a simpler power solution and also design simplicity - for a variety of point-of-load applications such as set-top-boxes, LCD displays, industrial measurement and automation. It is also ideal for other telecom and datacom designs, DSL modems, test and measurement systems, industrial or instrumentation applications.

 

A  buck regulator, also called as buck converter, is a dc-dc step-down power supply that keeps the current flowing through to the output constantly even after the electricity source has been temporarily disconnected.

 

The ISL8500 features a standard buck controller with integrated switching power MOSFET. The MOSFET generates the output voltage from 0.6V to 19V (when used with an external Schottky diode). The PWM output voltage is adjustable from 0.6V to 19V with continuous output current up to 2A, where the device drives the internal switching N-channel power MOSFET.

 

Other key features of ISL8500 include: integrated boot diode; fixed input voltage 5V ±10% and variable input voltage range from 5.5V to 25V; voltage mode control with integrated input voltage feed forward control, in order to provide flexibility in component selection and space savings; switching frequency of fixed 500kHz; externally adjustable soft-start time to enable smooth, monotonic start up and in-rush current control; output undervoltage protection; output voltage monitoring and power sequencing realized using PGOOD output (Power OK) and Enable (EN) input; internal 5V LDO regulator

Protection features in the ISL8500 include: overcurrent protection; thermal overload protection; and undervoltage protection.

 

Intersil said that the ISL8500 is available in a small, thermally enhanced 4mm x 3mm 12-lead DFN package.

 

Intersil Corporation’s products address some of the growing markets, such as, flat panel displays, cell phones, power management functions, analog signal processing functions, other handheld systems and notebooks.  

 

Intersil’s product portfolio includes: ICs for battery management, hot-swap and hot-plug controllers, linear regulators, power sequencers, supervisory ICs, bridge drivers, PWM controllers, switching DC/DC regulators and power MOSFET drivers; optical storage laser diode drivers; DSL line drivers; video and high-performance operational amplifiers; data converters; interface ICs; analog switches and multiplexers; crosspoint switches; voice-over-IP devices; and as well as ICs for military, space and radiation-hardened applications