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PCMB065T-2R2MS Datasheet(PDF) 1 Page - International Rectifier

Part # PCMB065T-2R2MS
Description  Dual output, 4A/Phase, Highly Integrated SupIRBuck
PDF  47 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

PCMB065T-2R2MS Datasheet(HTML) 1 Page - International Rectifier

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Dual output, 4A/Phase, Highly Integrated SupIRBuck
TM
Single-Input Voltage, Synchronous Buck Regulator
IR3891
1
www.irf.com
© 2013 International Rectifier
May 08, 2013
FEATURES
 Single 5V to 21V application
 Wide Input Voltage Range from 1V to 21V with
external Vcc
 Output Voltage Range: 0.5V to 0.86*PVin
 Dual output, 4A/Phase
 Enhanced Line/Load Regulation with Feed-
Forward
 Programmable Switching Frequency up to 1.5MHz
 Internal Digital Soft-Start
 Enable input with Voltage Monitoring Capability
 Thermally compensated current limit and Hiccup
Mode Over Current Protection
 External synchronization with Smooth Clocking
 Precision Reference Voltage (0.5V +/-1%)
 Seq pin for Sequencing Applications
 Integrated MOSFETs, drivers and Bootstrap diode
 Thermal Shut Down
 Open Feedback Line Protection
 Over Voltage Protection
 Interleaved Phases to reduce Input Capacitors
 Monotonic Start-Up
 Operating Junction Temp: -40oC<Tj<125oC
 Small Size 5mm x 6mm PQFN
 Lead-free, Halogen-free, and RoHS Compliant
DESCRIPTION
The IR3891 SupIRBuck
TM is an easy-to-use, fully
integrated and highly efficient DC/DC regulator. The
onboard PWM controller and MOSFETs make IR3891
a space-efficient solution, providing accurate power
delivery for low output voltage.
IR3891
is
a
versatile
regulator
which
offers
programmability of switching frequency and a fixed
current limit while operating in wide input and output
voltage range.
The switching frequency is programmable from
300kHz to 1.5MHz for an optimum solution.
It also features important protection functions, such as
Over Voltage Protection (OVP), Pre-Bias startup,
hiccup current limit and thermal shutdown to give
required system level security in the event of fault
conditions.
APPLICATIONS
 Sever Applications
 Netcom Applications
 Set Top Box Applications
 Storage Applications
 Embedded telecom Systems
 Distributed Point of Load Power Architectures
 Computing Peripheral Voltage regulators
 General DC-DC Converters
ORDERING INFORMATION
Base Part
Number
Package Type
Standard Pack
Orderable Part
Number
Form
Quantity
IR3891
PQFN 5mm x 6mm
Tape and Reel
750
IR3891MTR1PBF
IR3891
PQFN 5mm x 6mm
Tape and Reel
4000
IR3891MTRPBF


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