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IR3840MPBF PDF预览

IR3840MPBF

更新时间: 2024-11-06 11:09:11
品牌 Logo 应用领域
英飞凌 - INFINEON 稳压器
页数 文件大小 规格书
32页 919K
描述
HIGHLY EFFICIENT INTEGRATED 12A SYNCHRONOUS BUCK REGULATOR

IR3840MPBF 数据手册

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PD60364  
IR3840MPbF  
HIGHLY EFFICIENT  
TM  
SupIRBuck  
INTEGRATED 12A SYNCHRONOUS BUCK REGULATOR  
Features  
Description  
Greater than 96% Maximum Efficiency  
Wide Input Voltage Range 1.5V to 16V  
Wide Output Voltage Range 0.7V to 0.9*Vin  
Continuous 12A Load Capability  
The IR3840 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  
Integrated Bootstrap-diode  
IR3840  
a
space-efficient solution, providing  
High Bandwidth E/A for excellent transient  
performance  
accurate power delivery for low output voltage  
applications.  
Programmable Switching Frequency up to 1.5MHz  
Programmable Over Current Protection (Hiccup)  
PGood output  
IR3840 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.  
Precision Reference Voltage (0.7V, +/-1%)  
Programmable Soft-Start  
Enable Input with Voltage Monitoring Capability  
Enhanced Pre-Bias Start-up  
The switching frequency is programmable from  
250kHz to 1.5MHz for an optimum solution.  
Seq input for Tracking applications  
-40oC to 125oC operating junction temperature  
Thermal Protection  
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.  
Pin compatible option for 4A and 8A devices  
5mm x 6mm Power QFN package, 0.9 mm height  
Lead-free, halogen-free and RoHS compliant  
Applications  
Netcom Applications  
Server Applications  
Computing Peripheral Voltage Regulators  
General DC-DC Converters  
Storage Applications  
Embedded Telecom Systems  
Distributed Point of Load Power Architectures  
1.5V <Vin<16V  
4.5V <Vcc<5.5V  
Enable  
Seq  
Vin  
Boot  
Vo  
Vcc  
SW  
PGood  
PGood  
OCSet  
Fb  
Rt  
Comp  
PGnd  
SS/ SD  
Gnd  
Fig. 1. Typical application diagram  
1
06/18/09  

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