Dual output, 6A/Phase, Highly Integrated SupIRBuck®
IR3892
Single-Input Voltage, Synchronous Buck Regulator
FEATURES
DESCRIPTION
The IR3892 SupIRBuck® is an easy-to-use, fully
integrated and highly efficient DC/DC regulator. The
onboard PWM controller and MOSFETs make IR3892
a space-efficient solution, providing accurate power
delivery for low output voltage.
• 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, 6A/Phase
IR3892 is
a
versatile regulator which offers
• Enhanced Line/Load Regulation with Feed-
Forward
programmability of switching frequency and a fixed
current limit while operating in wide input and output
voltage range.
• Programmable Switching Frequency up to 1.0MHz
• Internal Digital Soft-Start
• Enable input with Voltage Monitoring Capability
The switching frequency is programmable from
300kHz to 1.0MHz for an optimum solution.
• Thermally compensated current limit and Hiccup
Mode Over Current Protection
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.
• 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
APPLICATIONS
• Open Feedback Line Protection
• Sever Applications
• Over Voltage Protection
• Netcom Applications
• Interleaved Phases to reduce Input Capacitors
• Monotonic Start-Up
• Operating Junction Temp: -40oC<Tj<125oC
• Set Top Box Applications
• Storage Applications
• Small Size 5mm x 6mm PQFN
• Embedded telecom Systems
• Distributed Point of Load Power Architectures
• Computing Peripheral Voltage regulators
• General DC-DC Converters
• Lead-free, Halogen-free, and RoHS Compliant
ORDERING INFORMATION
Base Part
Standard Pack
Quantity
4000
Orderable Part
Number
Package Type
Form
Number
IR3892
PQFN 5mm x 6mm
Tape and Reel
IR3892MTRPBF
IR3892
PBF
TR
M
Lead Free
Tape and Reel
Package Type
1
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May 29, 2014