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IR3821MPBF

Description
HIGHLY INTEGRATED 7A WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
CategoryPower/power management    The power supply circuit   
File Size678KB,21 Pages
ManufacturerInternational Rectifier ( Infineon )
Websitehttp://www.irf.com/
Environmental Compliance
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IR3821MPBF Overview

HIGHLY INTEGRATED 7A WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR

IR3821MPBF Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerInternational Rectifier ( Infineon )
package instruction,
Reach Compliance Codeunknow
PD-60331
IR3821MPbF
SupIRBuck
Features
TM
HIGHLY INTEGRATED 7A
Description
The IR3821
SupIRBuck
TM
is an easy-to-use, fully
integrated and highly efficient DC/DC regulator.
The onboard switching controller and MOSFETs
make the IR3821 a space-efficient solution,
providing accurate power delivery for low output
voltage applications.
The IR3821 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 7A.
A versatile regulator offering programmability of
startup time, power good threshold and current
limit, the IR3821’s fixed 600kHz switching
frequency allows the use of small external
components.
The IR3821 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.
WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
Wide Input Voltage Range 2.5V to 21V
Wide Output Voltage Range 0.6V to 12V
Continuous 7A Load Capability
600kHz High Frequency Operation
Programmable Over-Current Protection
Programmable PGood Output
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
Distributed Point-of-Loads
Server and Workstations
Embedded Systems
Storage Systems
DDR Applications
Graphics Cards
Game Consoles
Computing Peripheral Voltage Regulators
Fig. 1. Typical application diagram
01/08/08
1

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Description HIGHLY INTEGRATED 7A WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR HIGHLY INTEGRATED 7A WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
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