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MPL105-1R0IR

Description
HIGHLY EFFICIENT INTEGRATED 6A SYNCHRONOUS BUCK REGULATOR
File Size757KB,34 Pages
ManufacturerInternational Rectifier ( Infineon )
Websitehttp://www.irf.com/
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MPL105-1R0IR Overview

HIGHLY EFFICIENT INTEGRATED 6A SYNCHRONOUS BUCK REGULATOR

PD-97510
IR3842AMPbF
SupIRBuck
Features
TM
HIGHLY EFFICIENT
Description
The IR3842A
SupIRBuck
TM
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
IR3842A a space-efficient solution, providing
accurate power delivery for low output voltage
applications.
IR3842A 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.
The switching frequency is programmable from
250kHz to 1.2MHz 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.
INTEGRATED 6A SYNCHRONOUS BUCK REGULATOR
Wide Input Voltage Range 1.5V to 21V
Wide Output Voltage Range 0.7V to 0.9*Vin
Continuous 6A Load Capability
Integrated Bootstrap-diode
High Bandwidth E/A for excellent transient
performance
Programmable Switching Frequency up to 1.2MHz
Programmable Over Current Protection
PGood output
Hiccup Current Limit
Precision Reference Voltage (0.7V, +/-1%)
Programmable Soft-Start
Enable Input with Voltage Monitoring Capability
Enhanced Pre-Bias Start-up
Seq input for Tracking applications
-40
o
C to 125
o
C operating junction temperature
Thermal Protection
Multiple current ratings in pin compatible footprint
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
1.5V <Vin<16V
Netcom Applications
Computing Peripheral Voltage Regulators
General DC-DC Converters
4.5V <Vcc<5.5V
Seq
Vcc
PGood
PGood
Enable
Vin
Boot
Vo
SW
OCSet
Fb
Rt
Comp
SS/ SD
Gnd
PGnd
Fig. 1. Typical application diagram
Rev 13.0
1

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