Download Gen2.1 SupIRBuck™ Integrated Voltage Regulators

Features
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Gen2.1 SupIRBuck™ Integrated
Voltage Regulators
PRESS
RELEASE
The Gen2.1 SupIRBuck family features IR’s latest
advances in control IC, MOSFET and package integration
technologies to deliver up to 12A output current in a low
profile, thermally enhanced 5x6mm Power QFN package.
Capable of handling input voltages as wide as 1.5V to 16V,
the new family of integrated voltage regulators is designed
to deliver output voltages from 0.7V to 90% of the input
voltage with benchmark efficiency over the entire load
range and peak efficiency greater than 96%.
DATA SHEETS
HI-RES
GRAPHIC
SuPIRBuck™
PAGE
Advantages
Wide input voltage range (1.5V to 16V with 5V bias) •
Small footprint (5x6mm) and low height (0.9mm)
Programmable switching frequency up to 1.5MHz •
1% accurate 0.7V reference voltage
Programmable hiccup current limit
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Programmable soft-start
Enhanced pre-bias start up
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Thermal Protection
Enable pin with voltage monitoring capability
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Power GOOD output for Over Voltage and Under
Voltage detection
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High bandwidth E/A for excellent transient
performance
Optimized solutions for sequencing (IR3840/1/2/3W)
and DDR memory tracking (IR3831/2W)
-40C to 125C operating junction temperature
Pin compatible with Gen2 SupIRbuck products
Lead-free, halogen-free and RoHS compliant
The best in class efficiency over entire load range allows energy saving and
simple thermal management
The common footprint for 2A, 4A, 8A and 12A devices provides design
flexibility and allows cut and paste layout.
The need for traditional dual stage POL conversion is eliminated which saves
energy, size and cost by operating directly from 12Vin.
Excellent package thermal properties and low height allows back-side board
mounting for additional space savings.
The small footprint and high switching frequency allows smaller total solution
size and cost.
The Gen2.1 family is a full featured, high performance compact solution for
server, storage and Netcom applications allowing easy on-board
implementation for fast time to market.
Gen2.1 Family Improvements
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Added Over Voltage Detection (PGOOD window comparator)
Shorter dead-time to reduce power loss
Reduced SYNC FET RDS(on) maximum value for better current limit accuracy
New current options
February 2010