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IR3871MPBF Datasheet, PDF (1/21 Pages) International Rectifier – 8A HIGHLY INTEGRATED WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR | |||
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PD-97472
IR3871MPBF
SupIRBuckTM
8A HIGHLY INTEGRATED
WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
Features
ï§ Input Voltage Range: 3V to 26V
ï§ Output Voltage Range: 0.5V to 12V
ï§ Continuous 8A Load Capability
ï§ Constant On-Time control
ï§ Excellent Efficiency at very low output current levels
ï§ Compensation Loop not required
ï§ Programmable switching frequency, soft start, and
over current protection
ï§ Power Good Output
ï§ Precision Voltage Reference (0.5V, +/-1%)
ï§ Pre-bias Start Up
ï§ Under/Over Voltage Fault Protection
ï§ Ultra small, low profile 5 x 6mm QFN Package
Applications
ï§ Notebook and desktop computers
ï§ Game consoles
ï§ Consumer electronics â STB, LCD, TV, printers
ï§ General purpose POL DC-DC converters
Description
The IR3871 SupIRBuckTM is an easy-to-use,
fully integrated and highly efficient DC/DC
voltage regulator. The onboard constant on time
hysteretic controller and MOSFETs make
IR3871 a space-efficient solution that delivers up
to 8A of precisely controlled output voltage in
60°C ambient temperature applications without
airflow.
Programmable switching frequency, soft start,
and 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.
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