Regulator IC puts four in one

The novel Endura ISL6521 is a quad regulator IC that combines a switching regulator for loads up to 20A with three linear regulators that can each drive 120mA, or 3A with external transistors.

The novel Endura ISL6521 is a quad regulator IC that combines a switching regulator for loads up to 20A with three linear regulators that can each drive 120mA, or 3A with external transistors.

High integration brings these four regulators together with full protection, power-on reset and soft-start features in one space- and cost-saving IC.

Applications for this new IC range broadly, providing power solutions for FPGAs, ASICs, POL, embedded systems and input/output across medical, industrial, computing and telecomms.

"Our customers are requiring higher and higher integration of their power solutions to meet vital space and cost points while retaining high performance", said Cindy Drapcho, Vice President of Intersil's Power Products.

"The ISL6521 delivers what customers require at the lowest overall solution cost in the industry.

The high integration simplifies the power solutions and, with Intersil support, reduces design time and time to market".

The ISL6521 monitors and precisely controls one synchronous-buck convertor and three configurable linear regulators from a +5V bias input.

The synchronous-buck PWM regulator provides the most power to a primary load.

Often, this primary load is the core voltage of an FPGA, ASIC or embedded processor.

The linear regulators are designed to regulate three additional system voltages.

Typically, these include any I/O, memory or clock voltages that might be required.

All four regulator outputs are adjustable between 0.8 and 4.0V providing +/-2% regulation over the full temperature range.

All outputs are overcurrent protected.

The PWM controller uses the upper mosfet's on-resistance to monitor the current.

The linear controllers monitor their respective feedback pins for undervoltage events to protect against excessive currents.

The ISL6521 is available now.

The suggested resale price in 100- to 999-unit quantities for the ISL6521CB is $2.25 each.

ICs are available on tape and reel.

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