Intersil ISL6534CRZ

Description
The ISL6534 is a versatile triple regulator that combines two independent synchronous-rectified buck controllers with integrated 12V gate drivers and a linear controller to offer precision regulation of up to three voltage rails. It features independent soft-start and enable functions, a PGOOD output to indicate when all regulators are available, and a thermally enhanced QFN or TSSOP package.

Features
Two synchronous-rectified buck controllers with voltage mode control, VIN range up to 12V, VOUT range from 0.6V to 6V, and 12V LGATE drivers
Switcher references include a 0.6V reference for OUT1, a 3.3V reference output for OUT2, and an external reference input for OUT2
Switcher clocking options include resistor-selectable switching frequency (300kHz default), synchronization-capable switching frequency, and phase options for optimal clock relationship
Single linear controller that drives an N-Channel MOSFET, has a 0.6V reference, and a VIN range up to 12V
12V and 5V supplies required (optional shunt regulator can generate VCC 5.8V from 12V)
Three independent soft-start/enable pins that can be ganged together or controlled independently
PGOOD output indicates all outputs are available
Thermally enhanced QFN or TSSOP package

Applications
DDR memory power supplies
Graphics cards
Set-top boxes
Networking equipment
Industrial controls