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IR3800MPBF fiches techniques PDF

International Rectifier - SYNCHRONOUS BUCK REGULATOR

Numéro de référence IR3800MPBF
Description SYNCHRONOUS BUCK REGULATOR
Fabricant International Rectifier 
Logo International Rectifier 





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IR3800MPBF fiche technique
PD-60352
IR3800MPbF
SupIRBuckTM
HIGHLY INTEGRATED 12A
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
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
Description
The IR3800 SupIRBuckTM is an easy-to-use, fully
integrated and highly efficient DC/DC regulator.
The onboard switching controller and MOSFETs
make the IR3800 a space-efficient solution,
providing accurate power delivery for low output
voltage applications.
The IR3800 operates from a single 4.5V to 14V
input supply and generates an output voltage
adjustable from 0.6V to 0.75*Vin at loads up to
12A.
A versatile regulator offering programmability of
startup time and current limit, the IR3800’s fixed
600kHz switching frequency allows the use of
small external components.
Game Consoles
Set-top Boxes
Graphics Cards
LCD TVs
Desktop PCs
Distributed Point-of-Loads
Embedded Systems
Computing Peripheral Voltage Regulators
The IR3800 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 fault
conditions.
11/04/08
Fig. 1. Typical application diagram
1

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