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IR3831MPbF PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 IR3831MPbF
部品説明 SYNCHRONOUS BUCK REGULATOR
メーカ International Rectifier
ロゴ International Rectifier ロゴ 



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IR3831MPbF Datasheet, IR3831MPbF PDF,ピン配置, 機能
PD60363
IR3831MPbF
SupIRBuckTM
HIGHLY EFFICIENT INTEGRATED
SYNCHRONOUS BUCK REGULATOR FOR DDR APPLICATIONS
Features
Description
Wide Input Voltage Range 1.0V to 16V
The IR3831 SupIRBuckTM is an easy-to-use, fully
Wide Output Voltage Range 0.6V to 0.9*Vin
integrated and highly efficient DC/DC regulator.
Continuous 8A Load Capability
The MOSFETS co-packaged with the on-chip
Integrated Bootstrap-diode
PWM controller make IR3831 a space-efficient
High Bandwidth E/A for excellent transient
performance
Programmable Switching Frequency up to 1.5 MHz
solution, providing accurate
DDR memory applications.
power
delivery
for
Programmable Over Current Protection (Hiccup) IR3831 is configured to generate termination
PGood output
voltage (VTT) for DDR memory applications.
Programmable Soft-Start
Enable Input with Voltage Monitoring Capability
Enhanced Pre-Bias Start-up
Vp input for DDR Tracking applications
-40oC to 125oC operating junction temperature
Thermal Protection
IR3831 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.
5mm x 6mm Power QFN Package, 0.9 mm height It also features important protection functions,
Lead-free, halogen-free and RoHS compliant
such as Pre-Bias startup, hiccup current limit and
Applications
Server Applications
thermal shutdown to give required system level
security in the event of fault conditions.
Storage Applications
Embedded Telecom Systems
Distributed Point of Load Power Architectures
Netcom Applications
1.0V <Vin<16V
4.5V <Vcc<5.5V
VDDQ
PGood
Enable
Vcc
PGood
Vp
Rt
SS/ SD Gnd
Vin Boot
SW
OCSet
Fb
Comp
PGnd
Vo
11/05/10
Fig. 1. Typical application diagram
1

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