IR3863M_15 Datasheet, PDF (1/21 Pages) International Rectifier – 6A HIGHLY INTEGRATED WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR

PD-97605
IR3863MPBF
SupIRBuck^TM
6A HIGHLY INTEGRATED
WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
Features
 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
Protection
 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
Description
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,
and thermally compensated over current
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
 Notebook and Desktop Computers
 Game Consoles
 Consumer Electronics – STB, LCD, TV, Printers
 General Purpose POL DC-DC Converters
8/8/2012 Rev3.2
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