Gen2.1 SupIRBuck

1
PRESS RELEASE
Gen2.1 SupIRBuck Integrated Voltage Regulators
DATA SHEETS
The Gen2.1 SupIRBuck family features IRs 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.
HI-RES GRAPHIC
SuPIRBuck PAGE

• Features
• 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
• Programmable soft-start
• Enhanced pre-bias start up
• Thermal Protection
• Enable pin with voltage monitoring capability
• Power GOOD output for Over Voltage and Under
  Voltage detection
• 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

• Advantages
• 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
• 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