6A Highly Integrated SupIRBuckTM Single-
Input Voltage, Synchronous Buck Regulator
IR3827
FEATURES
DESCRIPTION
The IR3827 SupIRBuckTM is an easy-to-use, fully
integrated and highly efficient DC/DC regulator.
The onboard PWM controller and MOSFETs make
IR3827 a space-efficient solution, providing accurate
power delivery for low output voltage applications.
• Single input voltage range from 5V to 21V
• Wide input voltage range from 1.0V to 21V with
external VCC bias voltage
• Output voltage range from 0.6V to 0.86% PVin
• Enhanced line/load regulation with feedforward
IR3827 is
a
versatile regulator which offers
• Programmable switching frequency up to
programmable switching frequency and internally set
current limit while operating in wide range of input and
output voltage conditions.
1.2MHz
• Three user selectable soft-start time
• User selectable LDO output voltage
• Enable input with voltage monitoring capability
The switching frequency is programmable from 300kHz
to 1.2MHz for an optimum solution. It also features
important protection functions, such as Pre-Bias
startup, thermally compensated current limit, over
voltage protection and thermal shutdown to give
required system level security in the event of fault
conditions.
• Thermally compensated current limit with robust
hiccup mode over current protection
• Synchronization to an external clock
• Enhanced Pre-bias start-up
• Precise reference voltage (0.6V+/-0.6%)
• Open-drain PGood indication
APPLICATIONS
• Optional power up sequencing
• Integrated MOSFET drivers and bootstrap diode
• Thermal Shut Down
• Computing Applications
• Set Top Box Applications
• Storage Applications
• Monotonic Start-Up
• Data Center Applications
• Operating temp: -40°C < Tj < 125°C
• Package size: 4mm x 5mm PQFN
• Lead-free, Halogen-free and RoHS6 Compliant
• Distributed Point of Load Power Architectures
ORDERING INFORMATION
Standard Pack
Base Part Number
Package Type
Orderable Part Number
Form
Quantity
750
IR3827
IR3827
PQFN 4 mm x 5 mm
PQFN 4 mm x 5 mm
Tape and Reel
Tape and Reel
IR3827MTR1PBF
IR3827MTRPBF
4000
IR3827
PBF – Lead Free
TR/TR1 – Tape and Reel
M – PQFN Package
1
www.irf.com
© 2013 International Rectifier
July 18, 2013