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PD-xxxxx
SupIRBuck
TM
HIGHLY INTEGRATED 12A
IR3810MPbF
WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
Features
• Wide Input Voltage Range 2.5V to 21V
• Wide Output Voltage Range 0.6V to 12V
• Continuous 12A Load Capability
• 600kHz High Frequency Operation
• Programmable Over-Current-Protection
• Hiccup Current Limit
• Tracking capability for Memory Application
• Precision Reference Voltage (0.6V)
• Programmable Soft-Start
• Pre-Bias Start-up
• Thermal Protection
• Thermally Enhanced Package
• Small Size 5mmx6mm QFN
• Pb-Free (RoHS Compliant)
Applications
• Distributed Point-of-Loads
• Server and Workstations
• Embedded Systems
• Storage Systems
• DDR Applications
• Graphics Cards
• Game Consoles
• Computing Peripheral Voltage Regulators
Description
The IR3810 SupIRBuckTMis an easy-to-use, fully
integrated and highly efficient DC/DC regulator.
The onboard switching controller and MOSFETs
make the IR3810 a space-efficient solution,
providing accurate power delivery for low output
voltage applications.
The IR3810 operates from a 4.5V to 14V input
supply and generates an output voltage
adjustable from 0.6V to 0.80*Vin at loads up to
12A.
IR3810 can be configured for tracking
applications to generate termination voltage (VTT )
for memory applications.
A versatile regulator offering programmability of
start up time and current limit, the IR3810’s fixed
600kHz switching frequency allows the use of
small external components.
IR3810 also features important protection
functions, such as Pre-Bias startup, hiccup
current limit and thermal shutdown to provide the
required system level security in the event of faul t
conditions.
11/28/07
Fig. 1. Typical application diagram
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