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IR3801AMPBF PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 IR3801AMPBF
部品説明 SYNCHRONOUS BUCK REGULATOR
メーカ International Rectifier
ロゴ International Rectifier ロゴ 



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IR3801AMPBF Datasheet, IR3801AMPBF PDF,ピン配置, 機能
PD-60355
IR3801AMPbF
SupIRBuckTM
HIGHLY INTEGRATED 9A
WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
Features
Wide Input Voltage Range 2.5V to 21V
Wide Output Voltage Range 0.6V to 12V
Continuous 9A Load Capability
300kHz 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 IR3801A SupIRBuckTM is an easy-to-use,
fully integrated and highly efficient DC/DC
regulator. The onboard switching controller and
MOSFETs make the IR3801A a space-efficient
solution, providing accurate power delivery for
low output voltage applications.
The IR3801A operates from a single 4.5V to 14V
input supply and generates an output voltage
adjustable from 0.6V to 0.8*Vin at loads up to 9A.
A versatile regulator offering programmability of
startup time, power good threshold and current
limit, the IR3801A’s fixed 300kHz 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 IR3801A 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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