SOURCE: Intersil


February 22, 2011 10:00 ET

Intersil's New USB Port Power Supply Controllers Provide Precise, Adjustable, Over-Current Protection

ISL6185/6 Family Features Industry's Best Current Limit Accuracy With Widest Operating Voltage -- All in Compact 3x3mm Footprint

MILPITAS, CA--(Marketwire - February 22, 2011) -  Intersil Corporation (NASDAQ: ISIL) today introduced a new family of power controller devices designed to meet the power supply requirements of industry-standard USB devices. The ISL6185/6 provide port power for products based on the USB 2.0 and 3.0 interface standards, offering designers several current limit level options, all with an accuracy 3x better than competitive solutions. This results in more precise protection and increased design flexibility for today's USB power designs. In addition, the ISL6185/6 come in industry standard packages for easy, drop-in replacement as well as a new, smaller package for saving even more board space.

The ISL6185 independently controls two power channels and features a pair of 71 milliohm P-channel power switches. Providing added design flexibility, each power channel is capable of protecting multiple USB ports. The ISL6185 provides continuous current at 0.6A, 1.1A, 1.5A and 1.8A levels. Its high current limit capability supports USB 3.0 as well as USB 2.0. In addition, both devices feature automatic restart/retry after an over-current or transient event, ensuring continued operation without requiring additional monitoring. No user or system intervention is required to reset the devices, with automatic recovery when the load fault is cleared. 

The ISL6186 USB power controller provides single channel over-current (OC) fault protection totaling up to 3.6A, allowing a single device to protect multiple USB ports. The device features a 45 milliohm P-channel MOSFET power switch for power control and continuous current options for 1.5A, 3A, and 3.6A. It also includes a Power Good output capability that provides supply status with no need for external components.

The new family consists of eight individual functional product variants and three package options. The family is rated for a nominal 2.5V to 5V range and specified over full commercial and industrial temperature ranges. Each device also features internal current monitoring, accurate current limiting, reverse bias protection and current limited delay to turn-off for system supply protection, along with control and communication I/O. Off-state supply current is one microAmp.

Pricing and Availability
The ISL6185/6 family is provided with enable polarity options in an industry standard 8-pin SOIC pinout along with two versions in the 70 percent smaller 3x3 DFN. The 8-pin DFN package offers the same performance as the 8-pin SOIC; the 10-pin DFN offers higher current capability in a very small package because of lower electrical and thermal resistance. Prices start at $0.75 each in 1,000-piece units.
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About Intersil
Intersil Corporation is a leader in the design and manufacture of high-performance analog, mixed signal, and power management semiconductors. The Company's products address some of the fastest growing markets within the communications, computing, consumer and industrial industries. For more information about Intersil or to find out how to become a member of our winning team, visit the Company's web site and career page at

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