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IR3812MPBF PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 IR3812MPBF
部品説明 SYNCHRONOUS BUCK REGULATOR
メーカ International Rectifier
ロゴ International Rectifier ロゴ 



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IR3812MPBF Datasheet, IR3812MPBF PDF,ピン配置, 機能
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PD-60335
IR3812MPbF
SupIRBuckTM
HIGHLY INTEGRATED 4A
WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
Features
Wide Input Voltage Range 2.5V to 21V
Wide Output Voltage Range 0.6V to 12V
Continuous 4A Load Capability
600kHz High Frequency Operation
Programmable Over-Current-Protection
Hiccup Current Limit
Tracking capability for Memory Application
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 IR3812 SupIRBuckTM is an easy-to-use, fully
integrated and highly efficient DC/DC regulator.
The onboard switching controller and MOSFETs
make the IR3812 a space-efficient solution,
providing accurate power delivery for low output
voltage applications.
The IR3812 operates from a single 4.5V to 14V
input supply and generates an output voltage
adjustable from 0.6V to 0.80*Vin at loads up to 4A.
IR3812 can be configured for tracking
applications to generate termination voltage (VTT)
for memory applications.
A versatile regulator offering programmability of
start up time and current limit, the IR3812’s fixed
600kHz switching frequency allows the use of
small external components.
IR3812 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.
01/08/08
Fig. 1. Typical application diagram
1

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