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IR3831MPBF bảng dữ liệu(PDF) 1 Page - International Rectifier

tên linh kiện IR3831MPBF
Giải thích chi tiết về linh kiện  HIGHLY EFFICIENT INTEGRATED SYNCHRONOUS BUCK REGULATOR FOR DDR APPLICATIONS
PDF  31 Pages
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nhà sản xuất  IRF [International Rectifier]
Trang chủ  http://www.irf.com
Logo IRF - International Rectifier

IR3831MPBF bảng dữ liệu(HTML) 1 Page - International Rectifier

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11/05/10
1
IR3831MPbF
Features
•
Wide Input Voltage Range 1.0V to 16V
•
Wide Output Voltage Range 0.6V to 0.9*Vin
•
Continuous 8A Load Capability
•
Integrated Bootstrap-diode
•
High Bandwidth E/A for excellent transient
performance
•
Programmable Switching Frequency up to 1.5 MHz
•
Programmable Over Current Protection (Hiccup)
•
PGood output
•
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
•
5mm x 6mm Power QFN Package, 0.9 mm height
•
Lead-free, halogen-free and RoHS compliant
Applications
•
Server Applications
•
Storage Applications
•
Embedded Telecom Systems
•
Distributed Point of Load Power Architectures
•
Netcom Applications
Fig. 1. Typical application diagram
HIGHLY EFFICIENT INTEGRATED
SYNCHRONOUS BUCK REGULATOR FOR DDR APPLICATIONS
SupIRBuckTM
Boot
Vcc
Fb
Comp
Gnd
PGnd
SW
OCSet
SS/ SD
4.5V <Vcc<5.5V
Vo
PGood
PGood
Enable
Rt
1.0V <Vin<16V
Vin
Vp
VDDQ
Description
The IR3831 SupIRBuckTM is an easy-to-use, fully
integrated and highly efficient DC/DC regulator.
The MOSFETS co-packaged with the on-chip
PWM controller make IR3831 a space-efficient
solution, providing accurate power delivery for
DDR memory applications.
IR3831 is configured to generate termination
voltage (VTT) for DDR memory applications.
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.
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.
PD60363


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