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IR3821MPBF

Part Number	IR3821MPBF
Manufacturer	International Rectifier
Description	SYNCHRONOUS BUCK REGULATOR
Published	Jul 26, 2009
Detailed Description	PD-60331 www.DataSheet4U.com IR3821MPbF TM SupIRBuck Features • • • • • • • • • • • • • • HIGHLY INTEGRATED 7A Descri...
Datasheet	IR3821MPBF PDF File

Overview

PD-60331 www.
DataSheet4U.
com IR3821MPbF TM SupIRBuck Features • • • • • • • • • • • • • • HIGHLY INTEGRATED 7A Description The IR3821 SupIRBuckTM 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 PD-60331 www.
DataSheet4U.
com IR3821MPbF -0.
3V to 24V -0.
3V to 16V -0.
3V to 30V -0.
3V to 30V -0.
3V to 16V -0.
3V to 3.
5V 10mA -0.
3V to +0.
3V -65°C To 150°C -40°C To 150°C JEDEC, JESD22-A114 JEDEC Level 3 @ 260oC ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND) • • • • • • • • • • • • VIN Supply Voltage Vcc Supply Voltage Vc Supply Voltage SW PGood Fb,COMP,SS,Vsns OCSet AGnd t...

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IR3821MPBF SYNCHRONOUS BUCK REGULATOR - International Rectifier

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