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IR3820AMPBF PDF Data sheet ( 特性 )

部品番号 IR3820AMPBF
部品説明 SYNCHRONOUS BUCK REGULATOR
メーカ International Rectifier
ロゴ International Rectifier ロゴ 



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IR3820AMPBF Datasheet, IR3820AMPBF PDF,ピン配置, 機能
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IR3820AMPbF
SupIRBuckTM
HIGHLY INTEGRATED 14A
WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
Features
Wide Input Voltage Range 2.5V to 21V
Wide Output Voltage Range 0.6V to 12V
Continuous 14A Load Capability
300kHz 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
Description
The IR3820A SupIRBuckTM is an easy-to-use,
fully integrated and highly efficient DC/DC
regulator. The onboard switching controller and
MOSFETs make the IR3820A a space-efficient
solution, providing accurate power delivery for
low output voltage applications.
The IR3820A operates from a 4.5V to 14V input
supply and generates an output voltage
adjustable from 0.6V to 0.75*Vin at loads up to
14A.
A versatile regulator offering programmability of
startup time, power good threshold and current
limit, the IR3820A’s fixed 300kHz switching
frequency allows the use of small external
components.
The IR3820A 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.
11/28/07
Fig. 1. Typical application diagram
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SYNCHRONOUS BUCK REGULATOR

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