Transcript Constant-On-Time (COT) SupIRBuck™ DC

Constant-On-Time (COT)
SupIRBuck™ DC-DC
Regulators
The IR347XM and IR386X SupIRBuck family of products
are easy to use, fully integrated DC-DC regulators featuring
hysteretic constant-on-time (COT) modulators with adaptive
dead time control and RDS(on) current sensing to achieve
superior light load and full load efficiency. The products are
designed with a 0.5V, 1% accurate internal reference
voltage allowing very low and precise output voltage
programmability.
Features
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PRESS
RELEASE
DATA SHEETS
HI-RES
GRAPHIC
SuPIRBuck™
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Advantages
• The IR347XM products are capable of up to 27V input voltage and are
VIN: 3V to 27V (IR347X)
available in 4x5mm and 5x6mm PQFN packages to cover a broad range of
VIN: 3V to 21V (IR386X)
loads from 6A to 15A. Each package size has two footprint compatible
VOUT: 0.5V to 12V
devices with different current ratings making it very easy to scale up or down
Excellent efficiency at very low output current levels
to meet optimal price and performance requirements. These options and
Programmable switching frequency and soft start
excellent light load efficiency make the IR347XM an ideal choice for power
Power Good and Enable
conversion in mobile applications such as laptop computers, including those
Precision voltage reference (0.5V, 1%
designed with the recently announced 2nd generation Intel Core™ processor
Pre-bias start up
family.
Temp compensated OCP
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The IR386X products are optimized for 12V input applications such as laptop
Thermal Shutdown
computers based on narrow VDC topologies. These devices are also ideal
for consumer DC/DC applications including printers, LCD TVs and game
consoles.
• The COT SupIRBuck product family is ideally suited for applications that are
required to maximize battery life or that must comply with ENERGY STAR
guidelines.
February 2011