参数资料
型号: IRDC3831W
厂商: International Rectifier
文件页数: 1/32页
文件大小: 0K
描述: N-CHANNEL FET
标准包装: 1
系列: SupIRBuck™
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 0.75V
电流 - 输出: 8A
输入电压: 12V
稳压器拓扑结构: 降压
频率 - 开关: 400kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: IR3831W
PD-97660
IR3831WMPbF
Sup IR Buck
TM
HIGHLY EFFICIENT INTEGRATED
SYNCHRONOUS BUCK REGULATOR FOR DDR APPLICATIONS
Features
Description
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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
PGood output
Hiccup Current Limit
Programmable Soft-Start
Enable Input with Voltage Monitoring Capability
Enhanced Pre-Bias Start-up
Vp input for DDR Tracking applications
-40 o C to 125 o C operating junction temperature
Thermal Protection
5mm x 6mm Power QFN Package, 0.9 mm height
Lead-free, halogen-free and RoHS compliant
The IR3831W SupIRBuck TM is an easy-to-use,
fully integrated and highly efficient DC/DC
regulator. The MOSFETS co-packaged with the
on-chip PWM controller make IR3831W a space-
efficient solution, providing accurate power
delivery for DDR memory applications.
IR3831W is configured to generate termination
voltage (VTT) for DDR memory applications.
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.
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
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Server Applications
Storage Applications
Embedded Telecom Systems
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Distributed Point of Load Power Architectures
Netcom Applications
1.0V <Vin<16V
4.5V <Vcc<5.5V
Enable
Vin
Boot
VDDQ
Vcc
SW
Vo
PGood
PGood
Vp
Rt
OCSet
Fb
SS/ SD
Gnd
PGnd
Comp
Fig. 1. Typical application diagram
Rev 16.0
1
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