IR3831WMPBF 반도체 회로 부품 판매점
HIGHLY EFFICIENT INTEGRATED SYNCHRONOUS BUCK REGULATOR
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 International Rectifier |
IR3831WMPbFwww.DataSheet4U.com
SupIRBuckTM
HIGHLY EFFICIENT INTEGRATED
SYNCHRONOUS BUCK REGULATOR FOR DDR APPLICATIONS
Features
Description
• Wide Input Voltage Range 1.5V to 16V
• Wide Output Voltage Range 0.6V to 0.9*Vin
The IR3831W SupIRBuckTM is an easy-to-use,
fully integrated and highly efficient DC/DC
• Continuous 8A Load Capability
regulator. The MOSFETS co-packaged with the
• Integrated Bootstrap-diode
on-chip PWM controller make IR3831W a space-
•
•
High Bandwidth E/A for excellent transient
performance
Programmable Switching Frequency up to 1.5 MHz
efficient solution, providing accurate
delivery for DDR memory applications.
power
• Programmable Over Current Protection
IR3831W is configured to generate termination
• PGood output
voltage (VTT) for DDR memory applications.
• Hiccup Current Limit
• 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
IR3831W 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.
• Thermal Protection
It also features important protection functions,
• 5mm x 6mm Power QFN Package, 0.9 mm height such as Pre-Bias startup, hiccup current limit and
• Lead-free, halogen-free and RoHS compliant
thermal shutdown to give required system level
Applications
security in the event of fault conditions.
• Server Applications
• Storage Applications
• Embedded Telecom Systems
• Distributed Point of Load Power Architectures
• Netcom Applications
1.5V <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
Rev 13.0
Fig. 1. Typical application diagram
1
IR3831WMPbFwww.DataSheet4U.com
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND unless otherwise specified)
• Vin ……………………………………………………. -0.3V to 25V
• Vcc ……………….….…………….……..……….…… -0.3V to 8V (Note2)
• Boot ……………………………………..……….…. -0.3V to 33V
• SW …………………………………………..……… -0.3V to 25V(DC), -4V to 25V(AC, 100ns)
• Boot to SW ……..…………………………….…..….. -0.3V to Vcc+0.3V (Note1)
• OCSet ………………………………………….……. -0.3V to 30V, 30mA
• Input / output Pins ……………………………….. ... -0.3V to Vcc+0.3V (Note1)
• PGND to GND ……………...………………………….. -0.3V to +0.3V
• Storage Temperature Range ................................... -55°C To 150°C
• Junction Temperature Range ................................... -40°C To 150°C (Note2)
• ESD Classification …………………………… ……… JEDEC Class 1C
• Moisture sensitivity level………………...………………JEDEC Level 3@260 °C
Note1: Must not exceed 8V
Note2: Vcc must not exceed 7.5V for Junction Temperature between -10oC and -40oC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. These are stress ratings only and functional operation of the device at these or any other
conditions beyond those indicated in the operational sections of the specifications are not implied.
PACKAGE INFORMATION
5mm x 6mm POWER QFN
SW
VIN 12
11 10 PGnd
Boot
Enable
13
15
Gnd
14
9 VCC
8 PGood
θJA = 35oC / W
θJ-PCB = 2oC / W
ORDERING INFORMATION
PACKAGE
DESIGNATOR
M
M
12 34 5
Vp FB COMP Gnd Rt
67
SS OCSet
PACKAGE
DESCRIPTION
IR3831WMTRPbF
IR3831WMTR1PbF
PIN COUNT
15
15
PARTS PER
REEL
4000
750
Rev 13.0
2
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제조업체: International Rectifier
( ir )
IR3831WMPBF regulator
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상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
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( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
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IR3831WMPBF
HIGHLY EFFICIENT INTEGRATED SYNCHRONOUS BUCK REGULATOR - International Rectifier
