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PD-97605
IR3863MPBF
Sup IR Buck
TM
6A HIGHLY INTEGRATED
WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
Features
Description
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Input Voltage Range: 3V to 21V
Output Voltage Range: 0.5V to 12V
Continuous 6A Load Capability
Constant On-Time Control
Compensation Loop not Required
Excellent Efficiency at Very Low Output Currents
Programmable Switching Frequency and Soft
Start
Thermally Compensated Over Current
The IR3863 SupIRBuck TM is an easy-to-use, fully
integrated and highly efficient DC/DC voltage
regulator. The onboard constant on-time
hysteretic controller and MOSFETs make IR3863
a space-efficient solution that delivers up to 6A of
precisely controlled output voltage.
Programmable switching frequency, soft start,
Protection
and
thermally
compensated
over
current
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Power Good Output
Precision Voltage Reference (0.5V, +/-1%)
Enable Input with Voltage Monitoring Capability
Pre-bias Start Up
Thermal Shut Down
Under/Over Voltage Fault Protection
Forced Continuous Conduction Mode Option
Very Small, Low Profile 4mm x 5mm QFN
Package
protection allows for a very flexible solution
suitable for many different applications and an
ideal choice for battery powered applications.
Additional features include pre-bias startup, very
precise 0.5V reference, over/under voltage shut
down, power good output, and enable input with
voltage monitoring capability.
Applications
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Notebook and Desktop Computers
Game Consoles
Consumer Electronics – STB, LCD, TV, Printers
General Purpose POL DC-DC Converters
8/8/2012 Rev3.2
1
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