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IR3856MPBF PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 IR3856MPBF
部品説明 SYNCHRONOUS BUCK REGULATOR
メーカ International Rectifier
ロゴ International Rectifier ロゴ 



Total 30 pages
		

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IR3856MPBF Datasheet, IR3856MPBF PDF,ピン配置, 機能
PD-97528
IR3856MPbF
SupIRBuckTM
HIGHLY EFFICIENT
INTEGRATED 6A, SYNCHRONOUS BUCK REGULATOR
Features
Greater than 95% Maximum Efficiency
Wide Input Voltage Range 1.5V to 21V
Wide Output Voltage Range 0.7V to 0.9*Vin
Continuous 6A Load Capability
Integrated Bootstrap-diode
High Bandwidth E/A for excellent transient
performance
Programmable Switching Frequency up to 1.5MHz
Programmable Over Current Protection
Over Voltage Protection
Dedicated input for output voltage monitoring
Programmable PGood output
Hiccup Current Limit
Precision Reference Voltage (0.7V, +/-1%)
Programmable Soft-Start
Enable Input with Voltage Monitoring Capability
Enhanced Pre-Bias Start-up
Seq input for Tracking applications
External Synchronization
-40oC to 125oC operating junction temperature
Thermal Protection
4mm x 5mm Power QFN Package
Halogen Free, Lead Free and RoHS compliant
Description
The IR3856 SupIRBuckTM is an easy-to-use, fully
integrated and highly efficient DC/DC
synchronous Buck regulator. The MOSFETs co-
packaged with the on-chip PWM controller make
IR3856 a space-efficient solution, providing
accurate power delivery for low output voltage
applications.
IR3856 is a versatile regulator which offers
programmability of start up time, switching
frequency and current limit while operating in
wide input and output voltage range.
The switching frequency is programmable from
250kHz to 1.5MHz for an optimum solution.
It also features important protection functions,
such as Pre-Bias startup, hiccup current limit and
thermal shutdown to give required system level
security in the event of fault conditions.
Applications
Server Applications
Storage Applications
Embedded Telecom Systems
Distributed Point of Load Power Architectures
Netcom Applications
Computing Peripheral Voltage Regulators
General DC-DC Converters
Rev 4.0
Fig. 1. Typical application diagram
1
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